The presumption in favour of sustainable development explained

 

The presumption in favour of sustainable development runs through the planning system in England, but the August 2026 National Planning Policy Framework changed the way it works. Instead of the old paragraph 11 and the familiar “tilted balance”, the current Framework uses policies S3 to S6 to give clearer rules about the principle of development in different locations.

For most applications the key question is whether the site is within a settlement or outside one. Development within settlements receives strong support in principle. Outside settlements, national policy identifies particular forms of development that receive similar support, together with a separate exceptional-circumstances route. Green Belt and Local Green Space have their own policy rules. This page explains how those pieces fit together and what they mean for a real planning application.

 

What the presumption actually means

 

Planning law remains the starting point. Under section 38(6) of the Planning and Compulsory Purchase Act 2004, a planning application is determined in accordance with the development plan unless material considerations indicate otherwise. The National Planning Policy Framework is one of the central national policy considerations in that decision.

Policy S3 contains the presumption. In broad terms, plans and decisions should apply a presumption in favour of sustainable development, with S4, S5 and S6 explaining how that works in particular situations. Where a proposal accords with the development plan and the relevant national decision-making policies, permission should be granted without delay.

The economic, social and environmental objectives of sustainable development remain important context, but they are not a separate checklist which an applicant passes simply by showing benefits under all three headings. For a planning application, the actual policy tests in the Framework do the work.

 

What counts as a settlement?

 

This matters because S4 and S5 draw a distinction between development within and outside settlements. Under the August 2026 Framework, a settlement is not limited to a town or village with a line drawn around it on a policies map.

The definition includes cities, towns, villages and other predominantly built-up areas. It can also include land which is allocated or has planning permission for development that will form part of the built-up area when completed. A development plan may identify a settlement using a defined boundary or an equivalent term, but it can also use criteria to identify the extent of a settlement where no boundary has been drawn.

Hamlets and scattered groups of houses outside predominantly built-up areas are not normally settlements unless the development plan specifically defines them as such. The Framework also contains a particular qualification for villages which lie within and are defined as part of the Green Belt.

A mapped settlement boundary can therefore remain extremely important, but the national definition of a settlement is not simply “inside the line or outside the line”.

 

S4: development within settlements

 

S4 gives strong support to development within settlements. The policy balance is deliberately favourable: development should be approved unless the benefits would be substantially outweighed by the adverse effects, taking account of the relevant national decision-making policies and the specific circumstances identified in S4.

That does not mean every site within a settlement is automatically suitable. A proposal can still fail because of matters such as poor design, unacceptable highway impacts, flood risk, biodiversity, heritage harm, protected open space or conflict with land safeguarded or allocated for another purpose. The important point is that the principle of suitable development within a settlement now starts from a strongly supportive national policy position.

So an objection is not irrelevant simply because a site lies within a settlement. The decision-maker still has to assess the actual effects of the proposal. What S4 changes is the balance against which those effects are judged.

 

S5: development outside settlements

 

Outside settlements the Framework is more selective. S5 identifies particular types and circumstances of development that are acceptable in principle. These include, among other things, agriculture and forestry, outdoor sport and recreation, development requiring a rural location, certain reuse, alteration, extension or replacement of buildings, redevelopment of previously developed land under S5(1)(d), limited infilling, rural exception housing and development associated with qualifying well-connected stations.

Where a proposal falls within one of the S5 categories, the same favourable balance broadly applies: permission should be granted unless the benefits are substantially outweighed by the adverse effects when assessed against the relevant national decision-making policies.

There is also an important route for development that would meet an evidenced unmet need. For housing, the Framework expressly says this can include a failure to demonstrate the required five year housing land supply, including the appropriate buffer, or a result below 75% in the most recent Housing Delivery Test. Those are express examples rather than necessarily the only ways an unmet need can be evidenced.

For an ordinary housing proposal, S5(1)(j) also requires the development to be physically well-related to an existing settlement, unless the nature of the development makes that inappropriate. Its scale must also be capable of being accommodated, taking account of existing or proposed infrastructure. Evidence of housing need is therefore important, but it is not enough on its own.

 

What if the proposal is not one of the S5 categories?

 

Falling outside the S5 list is not an automatic refusal. There is a separate exceptional-circumstances route. Development outside settlements which is not supported in principle by the listed categories can still be permitted where exceptional circumstances exist and the benefits would substantially outweigh the adverse effects, including effects on the character of the countryside and on patterns of movement.

That is a materially harder test than the one applied to development which is acceptable in principle under S5. Isolated homes in the countryside are also subject to their own specific national policy.

 

Green Belt and Local Green Space are different

 

S5 does not simply override the separate protections that apply to Green Belt or designated Local Green Space. A proposal on Green Belt land must be assessed under the Green Belt policies, including whether the development is inappropriate or falls within a category which national policy treats as not inappropriate.

Housing land supply can nevertheless still matter in the Green Belt. Under the separate grey-belt provisions, an inability to demonstrate the required five year housing land supply, or Housing Delivery Test performance below 75%, can satisfy the evidenced-unmet-housing-need limb of the policy. That does not mean permission automatically follows: the other Green Belt tests still have to be satisfied and major development may also have to comply with the Golden Rules.

The Framework also contains a separate route for certain housing and mixed-use development within reasonable walking distance of qualifying well-connected stations. See our guide to grey belt, Green Belt, greenfield and brownfield land for the wider distinction.

 

S6: neighbourhood plans and the presumption

 

The final piece of the new structure is S6. A development plan can include a neighbourhood plan as well as the authority’s local plan, and S6 gives particular protection to qualifying recent neighbourhood plans.

Broadly, where a housing proposal conflicts with a neighbourhood plan which became part of the development plan within the previous five years and which contains allocations meeting its identified housing requirement, that conflict is given particular significance under S6. The policy means that the favourable presumption elsewhere in S3 to S5 cannot simply be used to bypass a recently made neighbourhood plan which has made the housing provision expected of it.

This is a specific national policy protection and the exact S6 criteria should be checked in any case where a neighbourhood plan is relied upon.

 

A technical protection for some recently adopted plans

 

Annex A of the August 2026 Framework contains an important transitional housing rule. In certain circumstances, the fact that the current local housing need figure is higher than the housing requirement in a recently adopted development plan does not, by itself, establish an unmet housing need for S5.

Broadly, this protection applies during the first five years following adoption where the authority can demonstrate the required five year housing land supply, including the appropriate buffer, and its Housing Delivery Test performance is above 75%. It prevents the gap between a recently adopted plan requirement and a subsequently higher local housing need figure from automatically becoming an S5(1)(j) unmet-need argument.

This does not remove the separate consequences of an actual five year housing land supply shortfall or a Housing Delivery Test result below the relevant threshold.

 

How this replaced the tilted balance

 

Before August 2026, the presumption was most commonly associated with paragraph 11(d) and the tilted balance. Where the policies most important for determining the application were out of date, permission generally followed unless specified protections provided a clear reason for refusal or the adverse impacts significantly and demonstrably outweighed the benefits.

The August 2026 Framework removed that machinery and replaced it with the more location-based S3 to S6 structure. A shortage of housing land and poor housing delivery can still be very powerful, but they now operate principally as evidence of unmet need within the new policy structure rather than switching on the old paragraph 11(d) balance.

 

Worked examples: applying S4 and S5 to real sites

 

The easiest way to understand the new presumption is to see how the same proposal can be treated differently depending on its location and the evidence available.

 

Example A: adding flats above a commercial building in a town

Situation: A two-storey commercial building within a settlement could take an additional residential storey.

How the policy works: This is primarily an S4 case. The within-settlement location already attracts the favourable national decision-making balance. A poor Housing Delivery Test result can strengthen the housing-benefit context, but it is not needed to activate S4.

What still matters: Height, design, relationship with neighbouring homes, access, parking and other effects still have to be acceptable. The best planning strategy is normally to design the right envelope first and let the appropriate number of homes follow from it.

 

Example B: housing outside a settlement where HDT is 68%

Situation: A housing proposal lies outside the settlement and does not otherwise fall within an obvious S5 category.

How the policy works: A sub-75% HDT result is evidence of unmet housing need. It may bring a housing proposal within S5(1)(j), but only where the development is physically well-related to an existing settlement, unless its nature makes that inappropriate, and its scale can be accommodated by existing or proposed infrastructure.

What still matters: The proposal must still be acceptable when assessed against the other national decision-making policies and its particular effects.

 

Example C: the same outside-settlement site where HDT is 110%

Situation: The site and proposal are identical to Example B, but the authority is delivering well above the HDT threshold and can demonstrate the required housing land supply.

How the policy works: The sub-75% HDT route is no longer available. The applicant would need other evidence of unmet need which satisfies S5(1)(j), another S5 category, or the materially harder exceptional-circumstances route.

Why this comparison matters: Changing only the housing-delivery evidence can change the national-policy route even though the physical site has not changed at all.

 

Example D: potential grey-belt housing

Situation: Housing is proposed on land which may qualify as grey belt and the authority has a sub-75% HDT result.

How the policy works: The poor HDT result can satisfy the evidenced-unmet-housing-need limb of the relevant Green Belt policy.

What it does not do: It does not decide whether the land is actually grey belt or whether the proposal passes the remaining Green Belt tests. Where relevant, the Golden Rules must also be satisfied.

 

Example E: strong policy support but poor design

Situation: The principle of housing is strongly supported, but the scheme causes serious overlooking, poor access or an unacceptable highway impact.

How the policy works: The presumption is a favourable decision-making framework, not a substitute for a good scheme. If the adverse effects substantially outweigh the benefits under the applicable policy test, permission can still be refused.

Planning Geek tip: Use the presumption to identify the policy opportunity, then design the proposal so that the identifiable harms are reduced rather than assuming housing need will overcome them.

 

The limits: what the presumption does not do

 

The presumption is powerful, but it does not guarantee permission. The other national decision-making policies continue to apply. Some contain circumstances in which development should be refused; others specify particular harms, benefits or policy weights which must be put into the balance.

A proposal can therefore still fail because of matters such as unacceptable design, highway safety, flood risk, biodiversity, heritage, landscape or residential amenity. Green Belt has its own policy tests, as explained above. The result also depends on the evidence available when the application or appeal is decided: housing land supply and Housing Delivery Test positions can change, as can the development plan itself.

 

What it costs, and appealing a refusal

 

There is no separate charge for relying on the presumption. It forms part of the planning merits of an ordinary application. The fee payable for the application itself depends on the proposal; see our current planning application fees.

If permission is refused, the applicant will normally have a right of appeal. The presumption, the development plan and the relevant national decision-making policies can all be important at that stage. Our guide to planning appeals explains the different appeal routes and deadlines.

 

Where to go next

 

For the wider national policy framework, see what is the NPPF?. If the issue is housing need or delivery, continue with our guides to the five year housing land supply and the Housing Delivery Test. For the location question, see settlement boundaries and our Green Belt and grey belt guide.

 

 

Relevant policy behind the presumption in favour of sustainable development

 

The presumption comes from national policy rather than an Act of Parliament, although it operates within the statutory plan-led system. Always check that you are reading the current version of the Framework.

• National Planning Policy Framework (August 2026), particularly policies S3, S4, S5 and S6, Annex A and Annex D
• Planning and Compulsory Purchase Act 2004, section 38(6), the statutory development plan test
• Town and Country Planning Act 1990, section 70(2), matters to which the decision-maker must have regard

Other Planning Policy Sections

 

Presumption In Favour Of Sustainable Development Page Updated: 24th August 2026