Planning case law library
Planning law is shaped not only by legislation and national policy, but also by the courts. This Planning Geek planning case law library brings together judgments that help explain how planning law is interpreted and applied in practice.
Each public case record gives you the full case name, citation, court, judgment date and a plain-English Planning Geek explanation of why the decision matters. Where Planning Geek holds a copy of the judgment that we can make available, the full PDF is protected for Gold Members.
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Search by case name, citation or subject, or use the topic filter to narrow the results. The library will grow as further judgments are checked and added.
The Supreme Court held that a pooled infrastructure contribution scheme was unlawful where payments could fund projects with only a trivial connection to the development. Planning policy cannot make an otherwise irrelevant contribution material.
Jones v Mordue explains how courts assess reasons in listed-building cases and confirms that a decision-maker need not mechanically recite section 66 if the reasoning shows the heritage duty was properly applied.
Aldergate is the High Court authority confirming that the town-centre sequential test is generally applied to the broad type of development proposed, not reshaped around an individual retailer's own corporate or competitive preferences.
Dharmeshkumar is a 2025 Planning Court judgment on office-to-residential prior approval, extensive building works and ambiguous approved plans. The High Court upheld the Inspector's conclusion that unauthorised external works prevented reliance on the Class O permitted development right.
Operational development · Permitted development · Planning enforcement · Prior approval
Dharmeshkumar section 289 appeal is a Court of Appeal judgment about the test for obtaining permission to appeal from the High Court in a planning enforcement case. The court held that an appeal to the Court of Appeal under section 289(6) of the Town and Country Planning Act 1990 is subject to the ordinary permission test in CPR 52.6, not the stricter second-appeal test in CPR 52.7.
Arun section 288 service is a stark Planning Court judgment on the six-week statutory review procedure. Arun District Council issued its section 288 challenge in time but failed to serve the interested parties within the statutory six-week period. The court refused an extension and held that it had no jurisdiction to determine the claim, even though the late service had caused no substantive prejudice.
Foundational Court of Appeal authority on irrationality, relevant and irrelevant considerations, and the limited supervisory role of the court.
Sutcliffe v Calderdale is an important Court of Appeal authority on listed-building curtilage, identifying physical layout, ownership and use or function as key factors when deciding whether a structure falls within a listed building's curtilage.
Barnwell Manor is the leading Court of Appeal authority on the statutory weight to be given to preserving the setting of listed buildings in the planning balance.
Barry Field is an important High Court case on whether an old planning permission had been commenced. It held that demolition expressly authorised as part of a 1967 permission could amount to commencement even though demolition was not one of the statutory specified operations relied on for old permissions.
Certificates of lawfulness · Planning permission commencement
Barton explains when removing part of a gate and wall in a conservation area can amount to demolition rather than a permitted alteration.
Conservation area · Operational development · Permitted development · Planning enforcement
Berkeley is a leading House of Lords authority on environmental impact assessment as a mandatory process, not merely a collection of environmental information.
Panton and Farmer distinguishes a dormant lawful use from an abandoned use, and explains why an existing-use certificate must address accrued rights and the use actually proved.
Abandonment · Certificates of lawfulness · Enforcement time limit · Material change of use · Planning unit
Wheatcroft explains the limits on amending a planning proposal during determination or appeal, including whether the change would deprive interested people of a fair opportunity to comment.
Judicial review · Material considerations · Outline planning permission · Section 73
Blackbushe Airport is a leading Court of Appeal authority on curtilage, confirming that the land must form part and parcel of the building rather than merely sharing the same wider use or function.
Blackpool v Beale is a 2026 High Court judgment on section 187B planning injunctions against Romani Gypsy families. The court granted a permanent injunction despite failures by the council to comply properly with the public sector equality duty, because those failures would not have changed the outcome on the facts.
Planning enforcement · Planning injunction · Public sector equality duty
Bonsall and Jackson is the Court of Appeal authority confirming that Planning Enforcement Orders supplement rather than replace the Welwyn concealment principle.
Certificates of lawfulness · Concealment · Enforcement time limit · Planning enforcement
Braintree interpreted the former 2012 NPPF policy on isolated homes, holding that isolation meant physical separation from a settlement rather than lack of services.
Older High Court authority on the planning character of hotel and guest-house use, including the significance of transient occupation and the fact that full hotel-style services are not necessarily essential.
Holohan is a Court of Justice authority on the scope and reasoning required for a Habitats appropriate assessment. The assessment must examine all project aspects capable of affecting the site's conservation objectives, including effects on relevant habitats and species outside the site where those effects could undermine the protected site's integrity.
Britannia Assets is a useful enforcement authority on abandonment of a lawful use, old planning permissions and the limits of enforcement-notice appeals.
Fallback position · Material change of use · Planning enforcement
House of Lords authority on negative planning conditions and the principle commonly associated with Grampian conditions.
Burdle is the classic planning-unit authority: start with the whole unit of occupation unless a smaller area can be recognised as the site of a separate use both physically and functionally.
Burford is a Planning Court case confirming that land can be lawfully used for purposes incidental to a dwellinghouse without necessarily forming part of its curtilage, and explaining how Class E eaves height is measured where ground has been excavated.
Certificates of lawfulness · Curtilage · Permitted development
High Court authority that caravan mobility must be supported by evidence: an Inspector could not assume an assembled two-part structure was capable of road movement.
CG Fry is the Supreme Court authority on later-stage Habitats Regulations assessment and on the legal rights created by outline planning permission when national policy changes afterwards.
Habitats Regulations · Outline planning permission · Planning condition · Reserved matters
C.W. Larkin is a Divisional Court case on whether extensive replacement of a dwelling's external walls could still count as improvement or alteration under permitted development rights. The Secretary of State was entitled to treat the works as construction of a new dwelling.
Building · Dwellinghouse · Operational development · Permitted development
Jones v Shropshire confirms that the six-year Limitation Act period for court actions to recover statutory sums does not prevent a council from later using the separate administrative power to issue a CIL stop notice.
Court of Appeal rating authority whose size, permanence and physical-attachment factors became foundational to the planning-law test for whether a structure is a building.
Catesby Estates v Steer is a leading Court of Appeal authority on the setting of heritage assets, confirming that visual connection is important but not the only possible consideration.
Cemex is a Planning Court authority on residential development beside an established noisy minerals operation, closed-window noise mitigation and the need to consider possible future restrictions on the existing business.
Judicial review · Material considerations · Mineral planning · Neighbour amenity · Noise
European Court of Human Rights Grand Chamber judgment on Gypsy caravan occupation, Article 8 and the proportionality of planning enforcement.
Green Belt · Gypsy and Traveller planning · Human rights · Planning enforcement
City & Country Bramshill is a Court of Appeal authority on isolated homes in the countryside and heritage balancing, including the limits of the so-called Palmer principle.
House of Lords authority on the statutory priority of the development plan and the role of other material considerations in the planning balance.
Dutch nitrogen Habitats assessment is a major Court of Justice judgment on nitrogen deposition, programmatic assessment and the precautionary approach under Article 6 of the Habitats Directive. The court held that a programme-level appropriate assessment can support later individual authorisations only where its findings are sufficiently complete, precise and definitive to remove reasonable scientific doubt. Future conservation or mitigation benefits cannot simply be assumed before there is sufficient certainty that they will actually deliver the required ecological result.
Supreme Court authority on permission-stage costs in judicial review and planning statutory review, including when more than one defendant or interested party may recover costs.
Certificates of lawfulness · Dwellinghouse · Material change of use
Crest Nicholson is the Planning Court case upholding a water-neutrality occupation condition where the future action of other regulators did not provide the project-specific certainty required by the Habitats Regulations.
Habitats Regulations · Planning condition · Reserved matters
Crystal Property explains why an outline application with all matters reserved is not a blank cheque, and how specified floorspace and illustrative material can still be considered when deciding whether the principle and amount of development are acceptable.
Dartford is a Court of Appeal authority on the NPPF definition of previously developed land. Under the wording then in force, private residential gardens were excluded only where they were in built-up areas. A residential curtilage in the countryside could therefore fall within brownfield land if the rest of the definition was met.
Curtilage · Green Belt · Gypsy and Traveller planning · Previously developed land
DB Symmetry highway planning condition is the Supreme Court authority confirming that a planning condition cannot compel a landowner to dedicate land as a public highway without compensation. A condition may require roads to be constructed, but dedication of public highway rights needs the proper statutory or agreement route.
Debenhams explains why a physical connection does not automatically make an independent building part of a listed building, and the importance of fixtures and the principal-accessory relationship.
Dill confirms that listing an object does not conclusively make it a building. It distinguishes a building listed in its own right from an object protected as part of another listed building.
Building · Curtilage · Listed building · Planning enforcement
Court of Appeal authority on mandatory material considerations, consistency between planning decisions and the Habitats Regulations precautionary approach at outline stage.
Dover is the Supreme Court authority on when a planning authority may have to give reasons for granting permission, especially where members reject officer advice on a major controversial scheme.
Material considerations · Officer reports · Planning committee
Court of Appeal authority on incidental domestic use, hobbies and when an activity within a dwellinghouse curtilage becomes a material change of use.
Dunnett explains when a planning condition can exclude permitted development rights, why the full wording and context matter, and why prior approval is not a separate grant of planning permission by the council.
Certificates of lawfulness · Material change of use · Permitted development · Planning condition · Prior approval
Dunoon held that a condition limiting premises to specified uses did not, on its wording, exclude permitted development rights under the development order.
Dyer v Dorset is an important Court of Appeal curtilage case, holding that a staff house 450 yards from the main college buildings was not within their curtilage and emphasising the restricted, part-and-parcel character of the concept.
Court of Appeal public-law authority explaining when a material mistake of fact can amount to unfairness and an error of law, with direct relevance to planning challenges.
East Barnet concerns the character of a land use, rather than the identity or purpose of a particular occupier. This summary is grounded in its treatment by the House of Lords in Great Portland Estates.
Material change of use · Material considerations · Planning unit
East Herts v Flynn is a modern section 187B planning-injunction judgment. The High Court granted mandatory and prohibitory relief after an enforcement notice had remained uncomplied with for years, while expressly balancing Green Belt and conservation harm against Traveller accommodation needs, the children's interests and proportionality.
Conservation area · Green Belt · Gypsy and Traveller planning · Human rights · Planning enforcement · Planning injunction
Eco-Energy is a Court of Appeal authority on who may be a person aggrieved under section 288 and the strict finality of the statutory challenge period.
Edith Weston is a 2025 Planning Court judgment on neighbourhood-plan status, housing land supply and NPPF paragraph 14. The Inspector wrongly treated a newly made neighbourhood plan as a material consideration rather than part of the development plan, but the court held the appeal outcome would inevitably have been the same.
Housing land supply · Material considerations · Neighbourhood plan
Emin is an important older authority on incidental domestic purposes and whether an outbuilding is reasonably required. This is a source-qualified summary without the original report.
Certificates of lawfulness · Dwellinghouse · Material change of use · Permitted development
Empire serviced apartments is an important Planning Court case on the planning use of flats operated as short-term serviced accommodation. The court upheld an Inspector's conclusion that the relevant use was a sui generis serviced-apartment use rather than ordinary C3 dwellinghouses. It also confirms that London's 90-night short-letting rule does not itself decide the planning-use classification.
Dwellinghouse · Enforcement time limit · Holiday let · Material change of use · Planning enforcement · Planning unit · Prior approval
Court of Appeal authority on mineral permitted development and the contextual meaning of 'adjacent to' in a planning permission provision.
Gurvits home office enforcement is a useful High Court authority on when a business use in domestic outbuildings becomes a separate planning use, and on how an enforcement notice interacts with existing lawful or permitted rights. The court dismissed the owners' section 289 appeal. The Inspector had been entitled to find that three former domestic outbuildings had become a single, more intensive commercial office and storage planning unit, and that removing the office facilities and reconnecting the buildings to lawful domestic use did not unlawfully extinguish future permitted rights.
Dwellinghouse · Material change of use · Permitted development · Planning enforcement · Planning unit
Court of Appeal authority on commencement in breach of planning conditions, later approval and the limits of the Whitley principle.
Planning condition · Planning enforcement · Planning permission commencement
High Court authority that an applicant's own evidence does not need independent corroboration if it is sufficiently precise and unambiguous and there is no contrary evidence making it less than probable.
Fairmount Investments explains why a party must be given a fair opportunity to answer a new material point arising from an inspector's own observations.
Compulsory purchase · Judicial review · Material considerations
Fawcett upheld an agricultural occupancy condition and explains why difficulties at the margins do not necessarily make a condition void for uncertainty.
Agricultural development · Dwellinghouse · Planning condition
Fidler 2004 is a Court of Appeal authority on mixed uses, planning units, intensification and under-enforcement. A mixed use can materially change in character even if its component activities retain the same broad labels, and section 173(11) does not grant deemed permission for unrelated breaches omitted from the notice.
Material change of use · Planning enforcement · Planning unit
Fidler 2010 is the High Court straw-bale house judgment. Applying Sage, the Inspector was entitled to treat erection and later removal of the concealing straw walls as part of the totality of the intended building operations, so substantial completion occurred only when the bales were removed.
Concealment · Enforcement time limit · Operational development · Planning enforcement
Finney is the Court of Appeal authority that section 73 cannot be used to change the operative description of development in an existing planning permission.
Arun is a Court of Appeal authority on the former four-year single-dwellinghouse enforcement rule and remains relevant to historic and transitional cases after the 2024 reforms.
Dwellinghouse · Enforcement time limit · Planning condition · Planning enforcement
Forward is a public-law/PSED authority confirming that a breach of the public sector equality duty does not automatically require a decision to be quashed or set aside.
Court of Appeal authority confirming that hydrocarbon exploration must be judged as the development actually proposed, without importing hypothetical effects of a later commercial production scheme requiring separate permission.
Material considerations · Mineral planning · National Landscape (AONB)
Stringer material considerations is a classic planning authority on the width of the phrase material considerations and on the rule that a local planning authority must not fetter its future planning discretion by contract. The case arose from development near the Jodrell Bank radio telescope. The court held that the effect of proposed development on the operation of the telescope was capable of being a legitimate planning consideration, but an agreement by the county council to discourage development for a fixed future period unlawfully fettered its statutory discretion.
Gladman flood Sequential Test is an important Planning Court judgment on the relationship between national flood-risk policy and the statutory planning balance. The High Court quashed the Inspector's refusal of a 644-home scheme. Failure to satisfy the flood-risk Sequential Test was a serious policy conflict, but it was not a legal rule which automatically ended the planning balance.
Gladman tilted balance is a leading Court of Appeal authority on how the National Planning Policy Framework's tilted balance fits with the statutory plan-led system. The court rejected the argument that development-plan policies become irrelevant once the tilted balance is engaged. Their conflict, relevance and weight can still form part of the overall planning judgment.
Gluck confirms that a GPDO prior-approval deadline can be extended by agreement under Article 7(c), provided the longer period is identifiable and the agreement is evidenced in writing.
House of Lords authority behind the 'Grampian condition': development may be prohibited until an off-site event occurs even where that event is outside the applicant's direct control.
Gravesham is the leading planning case on the characteristics of a dwellinghouse, including day-to-day private domestic existence and seasonal occupation.
Greyfort is an important Court of Appeal authority on the Whitley principle, pre-commencement conditions and whether works lawfully implement a planning permission.
Certificates of lawfulness · Planning condition · Planning enforcement · Planning permission commencement
Greystoke is the Planning Court case confirming that NPPF paragraph 116 can apply where highways impacts are the principal reason for refusal, even if they are not the only reason, and that BNG must be carried into the planning balance where material.
Court of Appeal authority on the relevance and reasonableness of planning conditions, including conditions affecting access and private land rights.
Harlow compulsory purchase costs is a High Court authority on the scope of a successful objector's costs after a compulsory purchase order is not confirmed. The case confirms that recoverable inquiry costs are not necessarily confined to expenditure incurred after the formal CPO notice. Reasonable pre-notification and incidental costs may fall within the award, subject to detailed assessment.
Court of Appeal authority establishing that a lawful use can be lost by abandonment and later resumption may require planning permission.
The Supreme Court confirmed that compensation costs may be considered when deciding whether to revoke or modify planning permission. That is a different decision from determining the original application.
Judicial review · Material considerations · Planning compensation
Henry Boot is a leading Court of Appeal authority on material commencement where works are carried out in breach of pre-commencement planning conditions.
Herod CIL liability is a major 2026 High Court decision on the zero-charge exception to the Notice of Chargeable Development and Commencement Notice requirements, existing-building evidence and the point at which Community Infrastructure Levy liability crystallises. The court accepted that a developer may itself conclude that the chargeable amount is zero and therefore rely on the statutory notice exception. But the collecting authority is not bound by that view, and commencing development can leave the developer exposed if the authority later reaches a different conclusion on the evidence.
Community Infrastructure Levy · Planning permission commencement
Hibbitt is the leading Class Q authority on the line between converting an agricultural building and works that amount in substance to rebuilding.
Agricultural development · Operational development · Permitted development · Prior approval
Rafferty is a Court of Appeal authority on Article 8 and Gypsy caravan sites. Article 8 can be engaged even where a family has not yet moved its caravan onto the proposed site: the caravan itself is the home and stationing it is closely linked to private and family life. The appeal nevertheless failed because the Inspector had already carried out the substance of the proportionality balance.
Gypsy and Traveller planning · Human rights · Material considerations
Hillside incompatible planning permissions is the modern Supreme Court authority on overlapping permissions and when later development makes an earlier planning permission incapable of further implementation. The case is not really about abandoning a permission. The central question is physical compatibility: can the development authorised by the earlier permission still be carried out after what has subsequently been built?
Lands Tribunal authority that planning compensation for revocation or modification can extend to directly attributable anticipated business profits where the loss is sufficiently connected and not too remote.
Hughes is a leading Court of Appeal authority on abandonment of a lawful planning use and the objective four-factor assessment.
High Court authority on temporary planning permissions: a time limit in the description did not substitute for an enforceable temporary condition.
Fallback position · Material considerations · Planning condition
Divisional Court authority that a material change to residential use can occur before actual occupation; physical state and actual, intended or attempted use must be considered together as matters of fact and degree.
Certificates of lawfulness · Material change of use · Planning enforcement
Ipswich planning injunction hotel hostel is an important section 187B case on alleged hotel-to-hostel changes of use and the high threshold for an urgent planning injunction. The High Court refused to continue interim injunctions preventing hotels being used to accommodate asylum seekers, despite accepting that the councils had an arguable planning case.
Material change of use · Planning enforcement · Planning injunction
J Sample distinguishes losses directly attributable to a stop notice from the separate costs of an enforcement appeal, including reasonable steps taken to limit the developer's loss.
Jackson is the High Court decision on whether Planning Enforcement Orders replaced the Welwyn deliberate-concealment principle, later confirmed by the Court of Appeal in Bonsall and Jackson.
Certificates of lawfulness · Concealment · Enforcement time limit · Planning enforcement
Turner enforcement notice service is an important Planning Court judgment on serving an enforcement notice where a large planning unit is occupied by numerous changing businesses. The court held that conspicuously fixing the notice to entrance gates across the only means of access could amount to valid service on occupiers under section 329(2) of the Town and Country Planning Act 1990. The council did not have to attach a separate copy inside every individual compound.
Stevens is a leading Planning Court authority on Article 8 and children's best interests in planning. A child's best interests must be identified and treated as a primary consideration, but they are not paramount or automatically decisive. The planning decision-maker must keep them at the forefront while carrying out the full fact-sensitive balance.
Green Belt · Gypsy and Traveller planning · Human rights · Planning enforcement
High Court authority on rural worker dwellings and whether existing accommodation is genuinely suitable and available.
Agricultural development · Dwellinghouse · Material considerations
Cussons is a High Court judgment on a rural-worker dwelling. Once the Inspector accepted the need for an additional agricultural worker, he had to make clear findings on whether that worker needed to live at Howdale Farm and whether suggested alternatives were genuinely suitable and available. The decision was quashed for inadequate reasons.
Keenan confirms that expiry of a prior-approval deadline cannot create permitted development rights where the proposal never qualified for the underlying GPDO class.
Agricultural development · Permitted development · Prior approval
Kerr CLEUD fallback is a useful Planning Court judgment on how a certificate of lawfulness is interpreted and how the lawful use it confirms can operate as a fallback position in a later planning appeal. The court rejected an attempt to read additional numerical limits into a 1998 certificate from surrounding correspondence. The certificate had to be construed objectively from its own wording and the documents it actually incorporated.
Certificates of lawfulness · Fallback position · Material considerations · Noise · Wales
Kestrel Hydro confirms the Murfitt principle: an enforcement notice against an unlawful change of use can require removal of associated works that are genuinely integral to that use.
Material change of use · Operational development · Planning enforcement
King Media confirms that long-running deemed advertisement consent does not prevent a discontinuance notice where the statutory amenity test is met.
Advertisement control · Conservation area · Human rights · Planning compensation
Waddenzee explains the precautionary approach to Habitats assessment: when screening must lead to an appropriate assessment, and the scientific certainty required before a project can be authorised.
Landlink is a compulsory purchase compensation case showing how uncertain planning prospects can add value to retained land without being treated as an existing planning permission.
Lawson Builders explains the interaction between sections 73 and 73A where development has already been completed in breach of a precondition, and why the new conditions were not optional.
Certificates of lawfulness · Planning condition · Planning enforcement · Section 73
Lazari confirms that a planning condition can continue to restrict uses despite later changes to the Use Classes Order where its wording and purpose require it.
Certificates of lawfulness · Permitted development · Planning condition
Smith is the Court of Appeal judgment which held that application of the 2015 Planning Policy for Traveller Sites definition unlawfully discriminated against Lisa Smith and her family on the facts of their planning appeal. The court quashed the Inspector's decision but did not declare the national policy generally unlawful. The restrictive 2015 definition has since been replaced.
Gypsy and Traveller planning · Human rights · Material considerations · Public sector equality duty
Lochailort Kentford is a 2026 Planning Court case on the Brownfield Land Register and Local Plan allocation. It confirms that inclusion of part of a site in Part 1 of the Register as suitable for residential development does not mean the council must allocate the wider site for housing in its Local Plan.
Brent C4 HMO permitted development is an important High Court judgment confirming that a genuine Use Class C4 HMO can be a dwellinghouse for the purposes of Part 1 householder permitted development rights. The court rejected the council's attempt to import the single-household concept from C3 into C4.
Dwellinghouse · HMO · Material change of use · Permitted development
Hackney advertisement deemed consent explains the ten-year Class 13 deemed-consent route for advertisements and what displayed continually actually requires. The High Court held that a contractual right or continuing intention to advertise is not enough. The advertisement itself has to be displayed with sufficient continuity.
Lambeth explains how a section 73 permission is interpreted and why an obviously intended varied condition can still be effective despite clumsy drafting.
Certificates of lawfulness · Planning condition · Section 73
Lambeth v SSHCLG is the High Court authority confirming that a revised CIL Liability Notice or Demand Notice does not wipe out late-payment surcharges already incurred. Liability and payment dates arise under the CIL Regulations, not from the notices themselves.
Lambeth is a 2024 Planning Court judgment on joining two flats into one home. The court confirmed that housing policy is relevant to whether an amalgamation is a material change of use, but it is not automatically decisive: significance remains a fact-and-degree planning judgment.
Certificates of lawfulness · Dwellinghouse · Material change of use
Porter v Magill states the fair-minded and informed observer test for apparent bias and distinguishes legitimate public purposes from misuse of powers for party electoral advantage.
Judicial review · Material considerations · Planning committee
High Court costs authority arising from planning appeals: a costs judge may interpret an order but cannot rewrite it to achieve what the decision-maker probably intended.
Maidstone v King is a High Court planning injunction case showing the consequences of deliberate and continuing breach of court orders, including a six-month custodial sentence suspended to secure compliance.
Main lawful development certificate is a useful High Court authority on composite uses and the precision required when a certificate of lawful existing use describes what is lawful on a site. The court held that haulage and skip-hire activities at a scrapyard could not simply be dismissed as ancillary because they were relatively small compared with the dominant scrap business. They were capable of being independent primary activities within a composite use, and the certificate had to describe the lawful use accurately.
Certificates of lawfulness · Material change of use · Planning unit
Court of Appeal authority on defective ownership certificates, procedural errors and the court's discretion whether to quash a planning permission.
Judicial review · Outline planning permission · Ownership certificate
Malvern Hills material start is a leading Court of Appeal authority on how little physical work may be needed to commence a planning permission. The court accepted that accurately pegging out part of an approved estate road could amount to an operation in the course of laying out or constructing a road. The important qualification is that the operation must genuinely be carried out as part of the permitted development rather than as a sham or token exercise.
Mansell 2016 is the High Court stage of the Rocks Farm fallback case. It upheld the council's use of Class Q permitted development as a realistic fallback and its planning judgment on the officer report, NPPF, heritage and committee jurisdiction. The decision was later upheld by the Court of Appeal in 2017.
Agricultural development · Fallback position · Heritage setting · Officer reports · Permitted development
Mansi is an early enforcement-notice case confirming that an inaccurate recital does not necessarily invalidate a notice, but the notice must not require the owner to give up a pre-existing lawful use which the planning authority has no power to extinguish.
O'Brien is a Court of Appeal authority on section 187B injunctions and equality duties in Gypsy and Traveller enforcement. The council's equality duty applied when deciding to seek an injunction, but substance mattered more than labels: the decision was lawful because the council had in fact considered ethnicity, health, education, bricks-and-mortar aversion, alternatives and site provision.
Gypsy and Traveller planning · Human rights · Planning enforcement · Planning injunction · Public sector equality duty
Marshall is a key Part 6 Class A case on the 400 metre livestock restriction, the difference between A.1 and A.2, and the limits of the prior approval procedure.
Agricultural development · Judicial review · Permitted development · Prior approval
McGaw is the Court of Appeal authority on measuring the height of a proposed outbuilding under the Welsh GPDO where it abuts an ordinary boundary wall. On the facts, the neighbour's garden beyond the wall could be the ground immediately adjacent to the building.
MDM Civil Engineering v Morgan explains why planning permission did not remove a restrictive covenant, but helped support modification under section 84 subject to a £37,500 payment.
Court of Appeal authority on the flood-risk sequential test, the meaning of reasonably available sites and the relationship between national planning policy in the NPPF and guidance in the PPG.
Methuen-Campbell is the Court of Appeal authority behind the familiar curtilage question: is the land so intimately associated with the building that it forms part and parcel of it?
Miaris is a Court of Appeal authority on the limited scope of ground (f) in an enforcement appeal where no ground (a) planning-permission appeal is pursued.
Mansell is a leading Court of Appeal authority on fallback positions in planning and on how courts should read planning officer reports to committee.
Armstrong section 73 is an important Planning Court judgment rejecting the idea that section 73 is legally limited to minor material amendments or changes which are not fundamental. The statutory limit is different: section 73 cannot be used to alter the operative description of the development, but a substantial change to conditions is not unlawful merely because it is substantial.
Connors flood risk enforcement is a useful Planning Court decision on flood risk, biodiversity and the strict procedural requirements for bringing a section 289 enforcement appeal to the High Court. The permission application failed first because the required witness evidence had not been filed and served in accordance with Practice Direction 54D. The court nevertheless considered the proposed grounds and concluded that they would not have succeeded in any event.
Biodiversity net gain · Flood risk · Material considerations · Planning enforcement
Court of Appeal authority on enforcement notices, uncertainty and the power to amend a notice where the defect can be corrected without injustice.
Court of Appeal authority on NPPF paragraph 11(d)(i), AONB protection and when application of a protective national policy provides a clear reason for refusal.
Housing land supply · Material considerations · National Landscape (AONB)
Murfitt is the foundation case for the principle that an enforcement notice against an unlawful change of use can sometimes require associated physical works to be removed as part of restoring the land.
Material change of use · Operational development · Planning enforcement
Murrell is an important Court of Appeal authority on agricultural prior approval, the 28-day procedure and the limited scope of the prior-approval stage.
Agricultural development · Permitted development · Prior approval
Gardiner retrospective CIL is a leading Court of Appeal authority on self-build relief where development began before planning permission and was later regularised retrospectively. The court held that the CIL self-build exemption could not be secured after the event. With a retrospective section 73A permission, the permission and deemed commencement arise together, leaving no pre-commencement window in which the statutory exemption steps can be completed.
Community Infrastructure Levy · Planning permission commencement
Court of Appeal authority that a park home requiring dismantling before transport was not a caravan because the structure itself lacked the required mobility.
New World Payphones explains why prior approval cannot authorise a proposal that falls outside the relevant permitted development class, including a substantial separate advertising purpose.
Advertisement control · Permitted development · Prior approval
Newbury is the House of Lords authority behind the classic three legal tests for planning conditions: planning purpose, a fair and reasonable relationship to the permitted development, and reasonableness.
Certificates of lawfulness · Dwellinghouse · Material change of use
North Somerset flood sequential test is an important Planning Court judgment on what follows when a proposal does not pass the flood-risk Sequential Test. The court held that failure of the policy test did not create an automatic legal veto on planning permission. The decision-maker still had to determine the application in accordance with the development plan unless material considerations indicated otherwise, and could weigh relevant sustainability and flood-safety considerations in the overall planning balance.
Flood risk · Housing land supply · Material considerations · Outline planning permission
Court of Appeal authority on consistency in planning decisions and the need to explain departure from a materially indistinguishable earlier appeal decision.
O'Flynn explains why ordinary garden and recreational activities can be incidental to a dwellinghouse use, and why that matters when assessing a CLEUD and curtilage.
Certificates of lawfulness · Curtilage · Dwellinghouse · Material change of use
Palmer confirms that the setting of a listed building can be harmed by non-visual effects such as noise and smell, while also explaining how mitigation and heritage weight should be assessed.
Pathfield Estates is an important Divisional Court case on section 173A, confirming that a council can accept something as satisfactory compliance with an enforcement notice without necessarily varying or waiving the notice itself.
Pennine Raceway considers who is a person interested in land for historical planning-compensation provisions. Its broader wording must not be confused with every statutory reference to an interest in land.
Article 4 direction · Permitted development · Planning compensation
People Over Wind is the key Court of Justice authority on Habitats Regulations screening. Measures intended to avoid or reduce harmful effects on a protected site cannot be taken into account when deciding at the screening stage whether an appropriate assessment is required.
Lewis distinguishes a councillor's legitimate predisposition from an unlawful closed mind. Prior support and a shared political position did not establish predetermination on these facts.
Judicial review · Material considerations · Planning committee
Sweetman is a foundational Court of Justice authority on Habitats Regulations site integrity. A project may be authorised only where the competent authority is certain it will not adversely affect the site's integrity, meaning no reasonable scientific doubt remains. Permanent loss of habitat whose presence was a reason for designation can amount to adverse effect on integrity.
Pilkington inconsistent permissions is the classic authority behind the principle that implementing one planning permission can make an earlier permission incapable of further implementation where the two schemes are physically inconsistent. The case concerned overlapping permissions affecting the same land. Once a later permission for a bungalow had been implemented, the earlier permission could no longer be completed in accordance with its approved scheme.
House of Lords authority confirming that a valid planning permission cannot simply be abandoned by conduct or a commercial decision to stop using it.
Court of Appeal authority for the enduring principle that planning conditions must fairly and reasonably relate to the permitted development and must not pursue an ulterior planning purpose.
House of Lords authority confirming that access to the courts for determination of legal rights is not excluded without clear statutory words, in the planning context of quarrying in the Malvern Hills.
Certificates of lawfulness · Judicial review · Planning condition
Bishop is a strong warning on planning ownership certificates: materially false ownership information can make a permission vulnerable where the true owner was deprived of notice.
Supreme Court authority on EIA screening, Habitats assessment and remedies for procedural error, with an important later-law warning following People Over Wind.
Environmental impact assessment · Habitats Regulations · Judicial review
Judicial review · Material considerations · Officer reports · Planning committee
Judicial review · Material considerations · Officer reports · Planning committee
Planning Court authority on the strengthened statutory duty to seek to further the conservation and enhancement of National Landscapes, and how that duty fits within the planning balance.
Judicial review · Material considerations · National Landscape (AONB)
Egerton listed building curtilage is a useful High Court authority on deciding whether a separate building falls within the curtilage of a listed building. The case confirms that common ownership is only part of the picture. The physical relationship between the buildings and the way they have historically been used can be decisive when identifying the extent of a listed building's curtilage.
Agricultural development · Curtilage · Listed building · Material considerations
Embleton is a High Court judgment on a temporary rural-worker caravan and livestock building in the Northumberland Coast AONB. All seven grounds failed. The court accepted the council's planning judgments on essential need, dark skies, heritage publicity and Habitats issues, and declined to quash for a technical EIA screening-reasons breach because no prejudice or realistic prospect of a different outcome was shown.
Agricultural development · Habitats Regulations · Heritage setting · Material considerations · Officer reports
Supreme Court authority requiring the EIA for oil extraction to assess significant and quantifiable downstream greenhouse-gas emissions from the eventual combustion of the oil.
Friends West Oxfordshire section 73 is an important High Court judgment on whether a section 73 permission can be granted after the underlying planning permission has expired, and on the use of an original permission as a fallback. The court quashed the section 73 permission. Because the approval of pre-commencement conditions was later quashed with retrospective effect, the works relied upon had not lawfully commenced the original permission. It had therefore expired before the council purported to vary its conditions.
Ancient woodland · Fallback position · Material considerations · Planning permission commencement · Section 73
Gerber is a Court of Appeal authority on delay in planning judicial review, neighbour notification and the strong need for prompt challenges to planning permissions.
Heritage setting · Listed building · Material considerations
High Court authority confirming that a planning condition can be sufficiently certain and enforceable even where specialist professional judgment is needed to measure compliance.
Hall Hunter is a leading planning authority on when large seasonal polytunnels amount to operational development and on the limits of agricultural caravan permitted development.
Agricultural development · Building · Operational development · Permitted development · Planning enforcement
Halton planning inquiry costs is an important Court of Appeal judgment on when a party may be ordered to pay costs after its expert evidence changes during a called-in planning inquiry. The Court of Appeal allowed Halton's appeal and quashed the partial costs award. A council is not normally required to rehearse, stress-test or second-guess apparently competent independent expert evidence before an inquiry simply because that evidence later fails under cross-examination.
Hart Aggregates is a key High Court authority limiting an over-rigid application of the Whitley principle to pre-commencement planning conditions and material starts.
Planning condition · Planning enforcement · Planning permission commencement
Heronslea explains the former CIL rule under which social housing relief was lost if development commenced without a commencement notice, and confirms that payment dates arise from the Regulations rather than the demand notice.
Hourhope is an important CIL authority on what it means for an existing building to be in lawful use for the purposes of the CIL floorspace deduction.
Planning Court authority on material change of use, the character of an established use and the broad statutory discretion whether it is expedient to take planning enforcement action.
Court of Appeal authority on the continuing duty to have regard to material considerations between a committee resolution and the issue of the planning decision notice.
Material considerations · Officer reports · Planning committee
Lee Valley is a Court of Appeal judgment on a very large agricultural glasshouse in the Green Belt. Under the 2012 NPPF, an agricultural building fell within an unqualified Green Belt exception, so its effect on openness did not make it inappropriate development. Separate landscape, development-plan and nature-conservation policies still had to be assessed.
Agricultural development · Green Belt · Habitats Regulations · Officer reports
Lisle-Mainwaring explains why section 215 cannot simply be used as an aesthetic control to reverse lawful external painting where the statutory untidy-land test is not met.
Davis draft planning officer report is a practical Planning Court judgment on procedural fairness when a council officer asks a planning applicant to comment on a draft committee report before it is finalised. The court held that private circulation of a draft report was not automatically unlawful. The question was whether the process as a whole was fair and whether the officer retained independent professional judgment rather than allowing the applicant to shape the council's decision unfairly.
Battery energy storage · Officer reports · Planning committee
Planning Court authority applying Finch to airport expansion, including inbound-flight emissions, non-CO2 effects, climate benchmarks, material considerations and the CROW Act duty.
Climate change · Environmental impact assessment · Judicial review · Nationally significant infrastructure project
Court of Appeal authority on the seven-day time limit for appealing Planning Court judgments in NSIP cases and the strict approach to extensions of time.
Judicial review · Nationally significant infrastructure project
Mansfield explains the section 106A 'useful purpose' test when an old planning obligation is challenged or proposed for discharge.
Millgate is a useful section 106 authority on enforcing a unilateral undertaking even where an Inspector gave it little weight when granting planning permission.
The Milton Keynes case upheld the consultation behind the 2010 HMO permitted-development changes, while rejecting an unrestricted power to choose whom to consult.
Article 4 direction · HMO · Judicial review · Permitted development · Planning compensation
Court of Appeal authority on procedural fairness at planning committee, public speaking rights, statutory consultee objections and the reasons required when reaching a different planning judgment.
Judicial review · National Landscape (AONB) · Officer reports · Planning committee
Supreme Court authority on European protected species, Habitats Directive prohibitions and the relationship between planning permission and the separate species-licensing regime.
Nunn is a Court of Appeal authority on the consequences of a missed telecommunications prior-approval deadline and the protection of an accrued GPDO permission.
Ocado CLEUD revocation is an important Planning Court case on revoking a certificate of lawful existing use, the applicant's disclosure burden and whether an accrued lawful use can be lost by later non-use. Ocado won one significant point of law, but the judicial review was dismissed overall because Islington's revocation remained supported by independent grounds.
Certificates of lawfulness · Enforcement time limit · Planning condition · Planning enforcement · Planning unit
Perrin planning committee bias is a significant Planning Court judgment on apparent bias where a councillor participates in determining a planning application involving people he knows. The court stressed that apparent bias is assessed cumulatively. A Facebook connection or friendly acquaintance may not be enough by itself, but the full pattern of contact, assistance, call-in, comments and participation led a fair-minded and informed observer to conclude there was a real possibility of bias.
Housing land supply · Material considerations · Officer reports · Planning committee
Trent concerned serious failures in CIL notices and resulted in the notices being quashed. It must be read with Braithwaite: a late notice is not automatically a nullity and timely challenge matters.
Rickards v East Herts explains how much rigour a light-touch agricultural prior approval still requires, particularly for protected sites and listed-building settings.
Agricultural development · Ancient woodland · Listed building · Officer reports · Permitted development · Prior approval
Dennis v Southwark is an important Planning Court case on section 96A, severability and large phased permissions. The court held that adding the word ‘severable’ materially enlarged the rights granted by the outline permission and could not be done as a non-material amendment.
Outline planning permission · Reserved matters · Section 96A
Blewett explains why an environmental statement is not judged against perfection. The EIA challenge failed, but the permission was quashed on a separate waste-policy ground.
Environmental impact assessment · Judicial review · Mineral planning
Braithwaite is the Court of Appeal authority confirming that a defective CIL liability notice remains legally effective until quashed or superseded and can be replaced by a revised liability notice under regulation 65.
Manby v Hackney is the Planning Court case in which planning permission was quashed after the council recognised its 45-degree rule as material but failed to assess its effect.
Calverton explains an evidence-based approach to exceptional circumstances for Green Belt boundary changes. Its suggested factors are not a compulsory checklist.
Green Belt · Local Plan examination · Material considerations
Chidswell applies Greenfields to a major housing permission, holding that failure to publish the draft section 106 agreement before permission caused real prejudice over ecology and BNG safeguards and rendered the permission invalid.
Biodiversity net gain · Outline planning permission · Planning committee · Planning condition · Reserved matters · Section 106 agreement
The European Barker judgment explains development consent in a multi-stage procedure and why environmental assessment cannot be excluded simply because the principal permission has already been given.
Environmental impact assessment · Outline planning permission · Reserved matters
Williams v Cyngor Gwynedd is a 2025 Planning Court judgment on Wales's C3, C5 and C6 use classes and an Article 4 direction. The court quashed Gwynedd's decision because Cabinet members were materially misled into thinking every change to a second home or short-term let would require planning permission.
Article 4 direction · Material change of use · Permitted development · Wales
Fidler 2011 is the Court of Appeal deliberate-concealment stage of the straw-bale house litigation. After the Supreme Court decision in Welwyn Hatfield, the court set aside Fidler's permission to appeal: deliberate positive deception designed to defeat enforcement time limits was a paradigm case in which the limitation defence could not be relied upon.
Giordano explains the CIL deduction for retained floorspace where an implementable permission already allows the intended permanent use, even though the conversion works are unfinished.
Greenfields is the Court of Appeal authority on article 40(3)(b) of the DMPO 2015 and the requirement to place proposed or agreed section 106 obligations on the planning register before permission is issued.
Whitewebbs Park is the High Court case in which planning permission was quashed after key ecology background papers were not made public and the committee was materially misled about BNG advice.
Biodiversity net gain · Officer reports · Planning committee
Holborn Studios is the Planning Court case confirming that reconsultation on amended planning applications depends on what fairness requires, not simply whether a change is fundamental.
Planning Court case on the planning unit for a Thames mooring, lawful residential boat use and whether increased residential use amounted to a material change of use.
Boats · Certificates of lawfulness · Material change of use · Planning unit
Lee Valley is an important High Court authority on previously developed land in the Green Belt, mixed sites and the need to analyse openness and very special circumstances properly rather than treating an entire site as brownfield simply because part of it is developed.
LW Zenith is the Planning Court case confirming that a prior approval can, in the right circumstances, use a negative condition linked to separately permitted operational works.
Di Mambro is the Planning Court authority confirming that a timely prior-approval decision does not retrospectively become deemed consent simply because the decision is later quashed.
Eatherley explains when basement construction may include a separate substantial engineering operation outside Class A. The court quashed the certificate because the council asked the wrong question.
Certificates of lawfulness · Dwellinghouse · Operational development · Permitted development
Oval Estates explains why adding phasing after commencement did not retrospectively reduce a CIL liability which had already arisen for an unphased development.
Community Infrastructure Levy · Outline planning permission · Section 96A
Moran is the Court of Appeal authority on section 70C, holding that the power can apply to prospective applications and is aimed at avoiding repeated consideration of planning merits already caught by an enforcement notice. A Supreme Court appeal is pending.
Knights v South Norfolk is a Planning Court case on delegated planning decisions, neighbour amenity evidence and when an officer's failure to engage with a material expert rebuttal makes the permission unlawful.
Ribble Valley applies Lee Valley to a mixed equestrian site in the Green Belt, holding that an Inspector could not lawfully treat the whole 5.68 hectare site as previously developed land without analysing the developed and undeveloped parts.
Robert Hitchins concerns switching between identical planning permissions and whether later section 106 contribution instalments were triggered. Accrued liability under the first agreement was not erased.
Material considerations · Planning permission commencement · Section 106 agreement
Samuel Smith 2020 is the Supreme Court authority on Green Belt openness. Openness is a broad planning concept linked to preventing urban sprawl. Visual impact can be relevant, but it is not a compulsory part of every assessment; the factors which matter in a particular case are primarily for the planning decision-maker.
Segrue v Swindon explains why CIL review and appeal deadlines matter and the limited role of regulation 65 where new evidence is produced after those deadlines have passed.
Baker is a 2026 Planning Court case on section 70C, changed Green Belt and traveller policy, and Article 8. The court upheld the council's decision not to determine a second retrospective application while enforcement notices remained uncomplied with.
Tesco v Stockport 2023 held that sequentially preferable retail sites could be treated as unavailable where they had genuinely been committed to other operators and were effectively off the market. That conclusion was affirmed by the Court of Appeal in 2025.
Tesco v Stockport 2025 is the current Court of Appeal authority on availability in the town-centre sequential test, confirming that a more central retail site can cease to be available when genuinely committed to another operator and effectively off the market.
Connors is a 2026 Planning Court case applying Moran to section 70C, holding that changed grey belt and traveller policy did not, on the facts, oblige Bromley to reconsider planning merits while extant enforcement notices remained uncomplied with.
Wild Justice v Pembrokeshire Coast is a Welsh planning case on background papers, procedural fairness, SSSI policy and Habitats Regulations assessment, in which the permission was quashed for two significant public-law failings.
Wyatt is a Court of Appeal authority on nutrient neutrality and Habitats Regulations assessment. The court upheld Fareham's use of Natural England's Solent methodology and stressed that appropriate assessment requires no reasonable scientific doubt, not absolute certainty or the most precautionary assumption at every individual stage.
Habitats Regulations · Material considerations · Officer reports
Compton explains exceptional circumstances for Green Belt boundary changes, why the Calverton factors are not a checklist, and the different tasks of plan examination and planning appeals.
Green Belt · Habitats Regulations · Local Plan examination · Material considerations
Orbital Shopping Park is an important CIL authority on internal mezzanine floors and why separate planning permissions cannot simply be combined to create a CIL charge.
Pridmore is a High Court authority on false or defective ownership certificates, owner notification and when procedural defects justify quashing planning permission.
Dixon heritage reconsultation is a useful Planning Court judgment on three recurring issues: when planning officers can disagree with heritage specialists, how less-than-substantial heritage harm may be assessed, and when amendments or a change in national policy require fresh consultation. The High Court upheld Wakefield's permission for a solar farm in the Green Belt near the Grade II Bretton Hall Registered Park and Garden. Sir Tim Kerr rejected all three grounds of challenge.
Green Belt · Heritage setting · Material considerations · Officer reports
Ricki Sage explains when a home business changes the character of a dwelling's use. Lack of noise or neighbour objections does not, by itself, establish lawfulness.
Certificates of lawfulness · Dwellinghouse · Material change of use · Planning unit
Court of Appeal authority on local plan energy-efficiency standards, national planning policy and the Environment Act duty to have due regard to the Environmental Principles Policy Statement.
Climate change · Judicial review · Local Plan examination · Material considerations
The High Court rejected four grounds of challenge to the Pitstock Farm solar permission. A conditional committee resolution did not end the opportunity to scrutinise a planning obligation before permission was issued.
Environmental impact assessment · Judicial review · Officer reports · Planning committee · Section 106 agreement
Royal Mint Court is the Divisional Court judgment upholding planning permission and listed building consent for the proposed Chinese Embassy. It considers diplomatic inviolability, enforceability of planning conditions, disclosure, application information and human rights.
Material considerations · Planning condition · Section 106 agreement
Supreme Court authority on compulsory purchase, material considerations and why an off-site benefit must have a real connection with the development before it can lawfully influence the decision.
Compulsory purchase · Material considerations · Section 106 agreement
Save Greater Manchester Green Belt is a 2025 Planning Court judgment on exceptional circumstances for adding land to the Green Belt during plan-making. It confirms that the concept is broad and fact-sensitive, not confined to proving that assumptions behind an earlier boundary have been falsified.
Valley Action Group is a useful planning and EIA authority on mobile poultry units, the meaning of development and cumulative environmental effects.
Agricultural development · Building · Environmental impact assessment · Operational development
Staunch is a 2026 Planning Court case on Habitats Regulations, functionally linked land and replacement habitat. It confirms that loss of functionally linked land outside an SPA is not automatically equivalent to loss of habitat within the protected site, and replacement land can in principle be mitigation rather than compensation.
Habitats Regulations · Material considerations · Section 106 agreement
Luck CIL self-build is an important Planning Court judgment on self-build exemption, commencement and a later disqualifying event where the exempted development was never completed. The court dismissed the challenge to Bracknell Forest's CIL demand. Once the exempted permission had been commenced, liability had arisen under the statutory scheme, and a later event which meant the original development could no longer be completed was capable of triggering loss of the exemption even though it occurred outside the ordinary clawback period.
Community Infrastructure Levy · Planning permission commencement
Forge Field is a leading High Court heritage judgment. Once harm to a listed building's setting or a conservation area is identified, the statutory duties require considerable importance and weight to be given to preservation. A development-plan presumption for affordable housing does not displace that duty, and reasonable alternative sites may need rigorous consideration.
Conservation area · Heritage setting · Listed building · Material considerations
Garden and Leisure is a High Court authority on the section 106A test for modifying planning obligations and the all-or-nothing nature of a modification application.
Conservation area · Fallback position · Heritage setting · Judicial review · Officer reports · Planning committee
Court of Appeal authority on the relationship between outline planning permission, reserved matters, separate condition discharge and a later section 73 permission.
Outline planning permission · Planning condition · Reserved matters · Section 73
Wright confirms that planning permission cannot be bought with an unrelated community benefit: a material consideration must satisfy the established land-use planning tests.
House of Lords authority on formal planning determinations, informal officer advice, estoppel and why public-law planning rights must be created through the statutory process.
Certificates of lawfulness · Judicial review · Material change of use · Section 73
Green Environmental is a House of Lords public-law authority on compelled statutory information and self-incrimination, cited by Planning Geek in the planning-enforcement context.
Burkett is a House of Lords authority on when a planning decision becomes challengeable, but its judicial-review timing discussion must now be read with the current six-week rule.
Court of Appeal Criminal Division authority on strict liability for unauthorised works to a listed building and the relevance of prejudicial state-of-mind evidence.
Alconbury is a foundational House of Lords authority on Article 6, ministerial planning decisions and the supervisory role of judicial review.
Gambone is a High Court fallback-position authority. It sets out a useful two-stage approach: first ask whether the alternative is more than merely theoretical and therefore material; then decide how much weight to give it by reference to matters such as likelihood and comparative planning harm.
Fallback position · Material considerations · Permitted development
Rectory Homes extra care dwellings is an important Planning Court case on whether accommodation falling within Use Class C2 can nevertheless contain dwellings for the purposes of an affordable housing policy. The answer was yes. The use-class label and the meaning of the word dwelling in a development-plan policy are not automatically the same thing.
Barker explains environmental impact assessment in a multi-stage planning process, including outline permission and reserved matters. It also shows why the remedy must be stated accurately.
Environmental impact assessment · Judicial review · Outline planning permission · Reserved matters
Rochdale ex parte Milne explains how an outline proposal can retain flexibility within assessed and secured environmental parameters, and how to consider the development plan as a whole.
Environmental impact assessment · Material considerations · Outline planning permission · Reserved matters
Wicks explains why a formally valid, unquashed enforcement notice cannot be challenged for alleged bad faith or bias as a defence to a prosecution for non-compliance.
Chamdal TPO fine is an important Court of Appeal decision on sentencing for the unauthorised felling of trees protected by a Tree Preservation Order. The court upheld a £200,000 fine after at least 132 protected trees were cut down. The judgment confirms the seriousness with which large-scale TPO breaches can be treated, even where the offence is one of strict liability and the prosecution does not establish that the works were carried out for financial gain.
Rose Builders v Alpha Trust concerns an overage-style covenant and contains a useful Hillside point: commencing planning permission did not require completion of the whole scheme.
High Court authority confirming that later remedial works can restore permitted development rights for the future but cannot retrospectively legalise earlier development.
Material change of use · Operational development · Permitted development · Planning enforcement
High Court authority that a local planning authority's statutory planning functions are exercised for the public at large and do not ordinarily create a private-law duty of care to individual landowners.
Sage is the House of Lords authority on substantial completion for operational development. For one unauthorised building operation, the enforcement clock did not begin merely because work had stopped: the whole operation had to be substantially completed.
Building · Enforcement time limit · Operational development · Planning enforcement
Smith applies Moran to section 70C, upholding South Kesteven's refusal to determine a fresh 13-pitch Traveller site application despite new evidence and changed circumstances.
Gypsy and Traveller planning · Judicial review · Planning enforcement
Samuel Smith 2009 is a Court of Appeal authority on fallback positions and planning judgment. A fallback need not be probable or likely before it is material: a real possibility can suffice, and even an outside chance may carry weight where the consequences of implementation are significant.
Fallback position · Material considerations · Planning condition
Sandpit Lodge confirms that a basement can fall within Class A where the excavation and support works are not, on the facts, a separate engineering activity of substance.
Certificates of lawfulness · Dwellinghouse · Permitted development
Planning Court authority on the weight of a non-statutory masterplan, development-plan priority, alternative access arrangements and the treatment of protected bats at outline stage.
Habitats Regulations · Material considerations · Planning condition
High Court authority on breach of condition and lawful development certificates: separate periods of non-compliance cannot simply be added together.
Agricultural development · Certificates of lawfulness · Enforcement time limit · Planning condition
House of Lords authority on the adequacy of planning reasons, substantial prejudice and heritage decisions.
Schneck is a 2022 Planning Court judgment on affordable housing viability, flood risk and a Class AA permitted-development fallback. The claimant succeeded on the affordable-housing and fallback grounds, while the flood-risk challenge failed.
Fallback position · Flood risk · Permitted development · Prior approval
ScottishPower v Scottish Ministers considers suspensive conditions, unresolved regulatory approvals, post-inquiry information, relevant considerations and the limits of judicial review in a Scottish wind-farm decision.
Judicial review · Material considerations · Planning condition · Scotland
Welwyn Hatfield v Beesley is the Supreme Court case on a house deliberately disguised as a hay barn, enforcement time limits and deliberate concealment of a planning breach.
Certificates of lawfulness · Concealment · Dwellinghouse · Operational development · Planning enforcement
Court of Appeal authority on section 38(6), requiring the proposal to be assessed against the development plan as a whole while national policy remains a material consideration.
Hopkins Developments explains the right to know and answer the opposing case at a planning inquiry, and why an inspector is not confined to the main issues identified at the outset.
Judicial review · Material considerations · Planning committee
Court of Appeal authority confirming that 'any other harm' in the Green Belt very special circumstances balance means any other planning harm, not only Green Belt harm.
West Berkshire 2016 is the Court of Appeal judgment which restored the Government's 2014 national policy on small-site section 106 contributions. It is important for the relationship between national policy, the development plan, consultation and the public sector equality duty, but the particular 2014 thresholds are historical rather than current guidance.
Caldwell is the Court of Appeal authority clarifying the outer limit of the Murfitt principle where operational development is itself fundamental to or causes the change of use.
Material change of use · Operational development · Planning enforcement
Skerritts is the Court of Appeal authority explaining that curtilage is a question of fact and degree and that the idea of curtilage always being small is too rigid, particularly for substantial listed buildings with historic ancillary structures.
Thurrock is a Court of Appeal authority on proving enforcement immunity, continuity of use and the evidential basis for a claimed planning fallback position.
Enforcement time limit · Fallback position · Material change of use · Planning enforcement
Curzon Park explains how evidence from other certificates of appropriate alternative development may assist a compensation assessment, without treating those certificates as actual planning permissions.
Compulsory purchase · Material considerations · Planning compensation
Waltham Forest explains why a proposed-use certificate must compare the actual existing use with the proposal, rather than inserting a hypothetical intermediate use.
Certificates of lawfulness · Dwellinghouse · Fallback position · Material change of use
Sentinel Estates is the 2026 Planning Court case on the former four-year enforcement rule and HMOs. The appeal failed procedurally, and the court also held in the alternative that HMO use was not use as a single dwellinghouse for the old section 171B(2) four-year rule.
Certificates of lawfulness · Enforcement time limit · HMO · Material change of use · Planning enforcement
Moore 2012 is the leading Court of Appeal authority confirming that commercial holiday letting of a dwellinghouse can amount to a material change of use. The answer is one of fact and degree, judged by the actual character of the holiday-letting use.
Dwellinghouse · Holiday let · Material change of use · Planning enforcement
House of Lords authority on the distinction between demolition and alteration of a listed building, including works removing only part of the building.
Simplex explains material error in planning decisions and when the court can be satisfied that correcting an error would inevitably have made no difference. The complete approved transcript is now held.
Green Belt · Judicial review · Material considerations · Officer reports
Skerritts is the Court of Appeal authority confirming that size, permanence and physical attachment are important factors when deciding whether a structure is a building for planning purposes.
Slough is a Court of Appeal authority on reading a clear planning permission at face value and when an application forms part of the consent.
Gypsy and Traveller planning · Human rights · Planning enforcement · Planning injunction
South Bucks v Porter is a leading House of Lords authority on the adequacy of planning reasons and the need to show substantial prejudice in a reasons challenge.
South Darenth Murfitt principle is an important Planning Court decision on the relationship between permitted development rights and the remedial requirements of an enforcement notice directed at an unauthorised material change of use. The court held that walls and fences could still be required to be removed under the Murfitt principle where they were integral to, or part and parcel of, the unlawful use, even if the works themselves benefited from permitted development rights.
Green Belt · Material change of use · Operational development · Permitted development · Planning enforcement
South Lakeland is the House of Lords authority confirming that the character or appearance of a conservation area is preserved where development leaves it unharmed. Positive enhancement is not required in every case.
Hedges is a High Court planning judgment on Gypsy site need. The Inspector's refusal was quashed because he treated need too narrowly as part of the family's personal hardship and failed to grapple with the separate policy issue that there were no available authorised pitches in the district.
Court of Appeal authority distinguishing housing-site deliverability from the actual market delivery of homes under the former five-year housing land supply policy.
Grendon confirms that planning law looks at both a building's physical attributes and its actual or intended use. Living in a structure does not by itself make it a dwellinghouse.
Certificates of lawfulness · Dwellinghouse · Material change of use · Planning enforcement
Street is an early Divisional Court authority on the line between repair or maintenance and reconstruction. Once an old bungalow had effectively been demolished to foundation level, the Minister was entitled to find that rebuilding it was development requiring planning permission.
McQueen v Mid Suffolk explains why individual site planning history was not a mandatory consideration when examining a neighbourhood plan settlement boundary, with an important caveat about March 2026 statutory changes.
Judicial review · Material considerations · Neighbourhood plan
Supreme Court authority on the former NPPF meaning of housing-supply policies, the treatment of out-of-date policies and the continuing statutory role of the development plan.
Briels distinguishes measures which avoid or reduce harm to a protected habitat from proposals to compensate for that harm by creating replacement habitat later.
Court of Appeal authority on agricultural permitted development and why a ground (f) enforcement appellant should identify any fallback variation clearly.
Agricultural development · Fallback position · Permitted development · Planning enforcement
Moore 1998 is the Court of Appeal case holding that self-contained holiday accommodation can still be used as single dwellinghouses for planning enforcement purposes. Permanent occupation as somebody's home is not an essential feature of a dwellinghouse.
High Court authority on whether a caravan is a building for planning purposes and on alleged inspector bias from local knowledge.
Building · Certificates of lawfulness · Enforcement time limit · Planning enforcement
Tesco v Dundee is a leading Supreme Court authority on interpreting development-plan policy and applying the town-centre sequential approach.
House of Lords authority on planning obligations, material considerations and the distinction between legal relevance and the planning weight given to a consideration.
Judicial review · Material considerations · Section 106 agreement
Test Valley section 73 is the leading Court of Appeal authority on how far conditions may be changed on a section 73 permission. The court confirmed two important propositions: a section 73 condition cannot contradict or remove part of the operative grant in the original permission, but there is no separate legal rule limiting section 73 to changes which are not substantial or fundamental.
Thames Heliports is the Court of Appeal authority confirming that activities carried out from a vessel on tidal water can be capable of amounting to a material change in the use of land, and that the correct planning unit remains a matter of fact and degree for the planning decision-maker.
The France v Kensington case distinguishes section 192 planning certificates from the much narrower section 26H listed-building certificate regime.
Certificates of lawfulness · Listed building · Planning permission commencement
House of Lords authority establishing finality and issue estoppel in planning enforcement where an earlier enforcement appeal has conclusively determined the lawful status of a use or development.
Certificates of lawfulness · Enforcement time limit · Planning enforcement
Bent is a Planning Court case on mineral noise, Planning Practice Guidance and the enforceability of technical noise conditions, confirming that uncertainty should not be confused with matters left to professional judgment.
Titchfield lawful use reversion is an important Court of Appeal judgment on what lawful use remains available when an unauthorised material change of use is enforced against. The court held that section 57(4) of the Town and Country Planning Act 1990 requires a counterfactual exercise: assume the development being enforced against had not occurred, then ask what use of the land would have been lawful. The creation of a new planning unit did not, by itself, extinguish earlier lawful use rights.
Material change of use · Planning enforcement · Planning unit
Tiwana unilateral undertaking is an important Planning Court judgment on late planning obligations, affordable housing and an Inspector's duty to consider an obviously material planning benefit. The High Court held that the Inspector acted unlawfully by deliberately disregarding an executed unilateral undertaking submitted before the appeal decision. The affordable housing it offered was an obviously material consideration, and the decision letter also failed to explain why it had been left out of account.
Material considerations · Outline planning permission · Section 106 agreement
Spirerose explains why a good prospect of planning permission is not automatically worth the same as a permission already granted when assessing compulsory-purchase compensation.
Trump International is a Supreme Court authority on interpreting conditions in public consents and the limited circumstances in which words may be implied.
Turner is a Court of Appeal authority on Green Belt openness. Openness is not a simple volume calculation. A decision-maker may compare permanence, spatial effect, built form and visual impact when deciding whether redevelopment would have a greater impact on openness than the existing lawful use.
Green Belt · Material considerations · Previously developed land
High Court authority on granny annexes, self-contained living accommodation and whether a detached building remains part of the same residential planning unit.
Dwellinghouse · Material change of use · Planning condition · Planning unit
Valentino Plus is a useful permitted-development authority on the old mixed-use Class F and the creation of separate planning units within one building.
Dwellinghouse · Material change of use · Permitted development · Planning unit
Walsall is a 2025 Planning Court permission judgment concerning a battery energy storage scheme in the Green Belt. The court found no arguable error in the Inspector's grey-belt assessment, alternative-site reasoning or treatment of noise evidence.
Warners Retail is a leading Court of Appeal authority on flexibility in the town-centre sequential test and on why the test must not be turned into a disguised requirement to prove retail need.
Welwyn Hatfield C4 HMO is a useful Planning Court judgment on whether a converted house containing a mixture of self-contained bedsits and shared accommodation can still operate as one C4 HMO dwellinghouse. The answer depends on fact and degree. On the evidence in this case, the shared facilities serving all occupiers supported the Inspector's conclusion that the property remained one C4 planning unit.
Dwellinghouse · HMO · Material change of use · Planning unit
Welwyn Hatfield 2010 was the Court of Appeal stage of the Beesley hay-barn case. It held that the former four-year limits protected both construction and residential use, despite deliberate deception. That result was reversed by the Supreme Court in 2011, so this judgment is important as case history rather than the final authority on concealment.
Certificates of lawfulness · Concealment · Dwellinghouse · Enforcement time limit · Operational development
The High Court continued the Aldermaston planning injunction after finding that all but one family had taken up residence after the original order. The judgment considers evidence of occupation, Article 8, children's interests, persons unknown and the distinction between court orders and planning merits. The proposed cessation date remained subject to further submissions.
Gypsy and Traveller planning · Human rights · Planning enforcement · Planning injunction
West Bowers explains why constructing an agricultural reservoir can also involve substantial mineral extraction requiring its own planning justification, even where the works form one physical process.
Agricultural development · Mineral planning · Operational development · Permitted development
West Midlands Probation is the leading Court of Appeal authority that justified fear of crime or anti-social behaviour can be a material planning consideration where the concern is genuinely linked to the use of land.
West Suffolk Use Class E is a leading Planning Court judgment on two parts of Class E: medical or health services provided principally to visiting members of the public, and research and development of products or processes. Mrs Justice Lang dismissed West Suffolk Council's statutory review. Specialist services did not fall outside Class E(e) merely because visitors required a referral, and the Inspector was entitled to treat the Animal Health Trust's research activities as Class E(g)(ii).
Certificates of lawfulness · Material considerations · Planning unit
British Waterways distinguishes protecting a planning use from protecting its current occupier, and considers whether refusal would realistically preserve the use.
Fallback position · Material change of use · Material considerations · Planning unit
House of Lords authority on planning purpose, material considerations and the distinction between land use and the interests of a particular occupier.
Wolverhampton v London Gypsies and Travellers is the leading Supreme Court authority on newcomer injunctions against unidentified future defendants. The court confirmed that such injunctions are available only exceptionally and require safeguards including full and frank disclosure, reasonable publicity, clear wording, liberty to apply and appropriate geographical and time limits.
Gypsy and Traveller planning · Human rights · Planning enforcement · Planning injunction
Wrexham, Porter and Searle is a leading House of Lords authority on the court's discretion, hardship and proportionality when granting planning injunctions under section 187B.
Gypsy and Traveller planning · Human rights · Planning enforcement · Planning injunction
Wrotham is an early Planning Court authority on the December 2024 grey belt definition. For decision-taking, the footnote 7 exclusion is applied to the actual development proposed, not to hypothetical development generally on the site. The court also upheld the Inspector's treatment of need for a motorway truck stop.
Wychavon is a Court of Appeal authority on very special circumstances in the Green Belt. The court rejected a rigid two-stage test: factors do not have to be rare or individually exceptional before they can combine to clearly outweigh Green Belt harm. Their significance is a qualitative planning judgment.
Green Belt · Gypsy and Traveller planning · Human rights · Material considerations
House of Lords authority that the statutory definition of caravan normally governs the same term in planning permissions made under the planning legislation.
What you will find in the library
The aim is not to collect every planning judgment ever handed down. We are building a practical library of decisions that help answer real planning questions.
- judgments on enforcement, lawful use and planning units
- cases dealing with permitted development and changes of use
- decisions concerning conditions, interpretation and decision-making
- other authorities that are useful when understanding planning law in practice
Topics will expand as the library grows. A case may appear under more than one topic where that genuinely helps people find it.
Why the full judgments are for Gold Members
The public case pages remain available to everyone. The protected judgment library is one of the additional resources available to Planning Geek Gold Members and reflects the time involved in finding, checking, organising and maintaining older and harder-to-find planning authorities.
If you are already a Gold Member, sign in to Planning Geek before opening a protected judgment. If you would like access, see the current Planning Geek membership options.
Read the judgment as well as the summary
Our summaries are there to make the cases easier to understand and to explain why a judgment may matter. They are not a substitute for reading the judgment itself where the precise reasoning, wording or factual background is important.
Case law also needs to be used with care. The result in one case does not automatically determine another case with different facts, and the weight of an authority depends on the court, the issue decided and what later courts have said about it.
Sources and provenance
Planning Geek records the source and provenance of the judgments we add. We prefer official and open-access sources wherever possible. A commercially published headnote, commentary or proprietary report is not treated as though it were the underlying court judgment, and we will not knowingly republish third-party editorial material merely because we can obtain a copy.
If a case record identifies an external source, that source is there to help readers understand where the judgment came from and to make the library easier to audit.
Planning Case Law Page Updated: 10th September 2026