Blackwood v Derry City and Strabane District Council [2018] NIQB 87
What Blackwood decided
Blackwood’s (Dean) Application [2018] NIQB 87 is a Northern Ireland High Court planning judgment delivered by McCloskey J on 23 October 2018. Dean Blackwood, representing River Faughan Anglers Limited, challenged Derry City and Strabane District Council’s decision to grant permission for a tourism development involving six self-catering units and a manager’s dwelling near the River Faughan.
The judicial review was dismissed. The judge rejected the contention that earlier planning approvals relied on by the council had expired without lawful implementation. The judgment is relevant when considering whether historic works and compliance with conditions preserve a planning permission, but it does not mean that any works or any breach of condition will always amount to a lawful start.
The earlier planning permissions and works
The planning history included permissions issued in March 2009, with a two-year commencement period. Excavation, construction of foundations and access works were undertaken in February and March 2011. The applicant argued that the work did not conform sufficiently to what was approved and therefore failed to implement the permissions.
At paragraphs 25 to 27, McCloskey J examined the evidence of the access and foundations against the permitted scheme. The court was satisfied that the vehicular access complied with the permissions and that at least some foundations overlapped the approved footprints. The works were capable of constituting a material start and the challenge on that issue failed.
Conditions precedent and the Whitley principle
The court separately considered conditions requiring the vehicular access, visibility splays and sight lines to be provided before the commencement or occupation of works. The applicant argued that non-compliance made the early operations unlawful. The judge applied Whitley and discussed the caution in Hart Aggregates against treating every prior requirement as an absolute bar to starting a development.
The critical defect was drafting. The two conditions were not identically worded and their punctuation and syntax produced genuine uncertainty. At paragraphs 31 and 32 the judge concluded that they lacked the clarity and coherence needed to qualify as strict conditions precedent. The attack on the implementation of the 2009 permissions therefore failed.
This was a decision about these particular conditions and this particular evidence. It should not be read as a rule that access works always suffice, that the condition precedent doctrine has disappeared, or that a planning authority cannot impose an effective prohibition on development before specified matters are approved.
Other judicial review grounds
The court considered additional challenges concerning Habitats Regulations assessments, protected species, environmental impact assessment and development plan policies. The judge ultimately dismissed the application for judicial review. The judgment’s detailed treatment of these grounds should not be reduced to a general conclusion that environmental duties are unimportant. Instead it turns on the specific assessments, evidence and statutory issues before the court.
The unsuccessful applicant was ordered to pay the council’s costs, subject to the existing protective costs order and a limit of £5,000. That costs outcome was not the result of a separate Planning Appeals Commission decision.
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Why the case matters in practice
Blackwood demonstrates the need to read the full text and punctuation of a planning condition before relying upon it to defeat the lawful implementation of a permission. Planners should also test whether works were in fact undertaken in time and whether they were part of the approved development. The court’s interpretation cannot substitute for site-specific evidence.
A Northern Ireland Planning Appeals Commission decision dated 28 October 2026 concerning 26 homes at Drumaroad cited Blackwood when considering a separate disputed drainage condition. That appeal was decided by a Commissioner, not by the High Court, and involved different wording and factual circumstances. For further background see Planning Geek’s guides to extant permissions and material starts and planning conditions.
Original judgment and source status
The 92-page original judgment is available from the Northern Ireland judiciary. A complete official PDF is available through Planning Geek’s Gold-member download below. The former public Media URL now redirects here, so the original is no longer publicly downloadable from this site.