Effects on neighbours
Overlooking, loss of light, noise and an overbearing relationship can be material planning issues. The concern must be assessed in the circumstances; a neighbour's objection does not prove unacceptable harm, but dismissing it without checking the design is not a useful response. [1]
At design review, identify the nearby windows, boundaries and spaces relevant to the proposal. Use the drawings to explain the relationship. Where a specific effect is disputed, obtain evidence directed at that question rather than relying on statements such as “everyone nearby has an extension”.
Design and the character of the area
National design policy addresses a development's response to its surroundings, including local character and the quality of the resulting place. Policy DP3 in the NPPF published on 17 August 2026 should be read with the other relevant policies, including those on effective use of land. Innovation is not ruled out merely because a design is different. [2]
Check whether the drawings explain the whole external composition: roof form, openings, materials and relationship with adjoining buildings. An attractive internal layout does not by itself demonstrate an acceptable external design.
The principle of the use or development
The development plan is the starting point for the decision, unless material considerations indicate otherwise. A proposal can therefore face an objection that cannot be solved simply by changing finishes or reducing a window. Establish whether the proposed use or amount of development is acceptable before treating detailed design as the only issue. [3]
Where policy interpretation is uncertain, ask a targeted question through pre-application advice. The purpose is to understand the issue and evidence needed, not to obtain a guarantee. [4]
Missing or inconsistent evidence
Validation requirements identify information needed for the particular proposal. A report with the correct title may still fail to address the actual design, and inconsistencies between plans and supporting documents can leave an important effect unresolved. Check the relevant council requirements and commission reports to an agreed scope. [5]
Use one final coordination review before submission. Test each important planning issue against the document that answers it, and identify any assumption that still needs checking.
Read a refusal as a set of problems to resolve
After refusal, use the decision notice and officer report to identify each reason separately. A revised application should address all outstanding reasons; an appeal should explain why the original decision was wrong on the relevant evidence. Merely making a small visible change is not an answer to a separate policy objection. [6]