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Planning Appeals in London: A Homeowner's Guide

When a planning application for a home extension or renovation project is refused by a London borough, the applicant has the right to appeal the decision to the Planning Inspectorate (PINS), an executive agency of the Department for Levelling Up, Housing and Communities. Appeals are free to make and are determined by a Planning Inspector — an independent government official who is not bound by the local authority's decision. This guide explains the planning appeals process for London homeowners.

Key Takeaways

  • ✓Planning appeals for householder applications are free to make and must be lodged within 12 weeks of the refusal date
  • ✓Over 90% of householder appeals are determined by written representations — no hearing required; typical timescale: 24–36 weeks
  • ✓Nationally, approximately 35–40% of householder planning appeals are allowed — success depends heavily on the strength of the refusal reasons and the quality of the grounds of appeal
  • ✓A free resubmission (within 12 months of refusal) addressing the design reasons for refusal is often faster than an appeal — consider both options
  • ✓Planning consultant fees for a written representation appeal: £1,500–£4,000
Architectural drawings with drafting pencils and a rulerIllustrative image

When and Why to Appeal

  • **Grounds for appeal:**
  • An appeal can be made against:
  • •Refusal of a planning application
  • •Refusal of a Certificate of Lawful Development (CLD)
  • •Failure of the local planning authority to determine an application within the required period (typically 8 weeks for a householder application) — a non-determination appeal
  • •Conditions attached to a planning permission that are unreasonable

**Time limit for appeal:** For a householder application (extensions, loft conversions, garden works), the appeal must be lodged within 12 weeks of the date of the refusal decision.

**Free resubmission before appealing:** Before appealing, consider whether a revised design could address the refusal reasons. In London, there is a right to resubmit a planning application free of charge within 12 months of a refusal (where the resubmission addresses the same proposals). A free resubmission costs nothing and, if designed to directly address the reasons for refusal, may succeed without the time and uncertainty of an appeal.

**Pre-appeal discussions:** The Planning Inspectorate has a pre-application discussion service. While not formal advice, a brief conversation with the case officer can help clarify whether an appeal is likely to succeed.

The Appeal Process: Written Representations

The vast majority of householder planning appeals in England (over 90%) are decided by the written representations procedure — no hearing or inquiry. This is the fastest and simplest procedure.

**Written representations process:** 1. The appellant (homeowner or their agent) completes the appeal form on the Planning Inspectorate's online portal (PINS Appeals Portal) 2. The appellant submits their grounds of appeal (a statement explaining why the refusal was wrong) and supporting documents 3. The local planning authority (LPA) submits its statement defending the refusal 4. Third parties (neighbours, local groups) may submit representations 5. The Planning Inspector makes a site visit (unaccompanied in most householder cases — the Inspector visits to understand the context, not to conduct a meeting) 6. The Inspector issues a decision (appeal decision) — typically within 24–36 weeks of the appeal being received for written representation cases

  • **What to include in the grounds of appeal:**
  • The grounds of appeal should:
  • •Specifically address each reason for refusal — explain why the local authority's assessment was incorrect
  • •Reference the relevant planning policies and how the proposal complies with them
  • •Where appropriate, refer to appeal decisions for comparable schemes that were allowed (appeal precedent is persuasive but not binding)
  • •Include any supporting technical reports (daylight analysis, design and access statement)
  • **Appeal decision:**
  • The Inspector issues a written decision (the 'appeal decision letter'). The appeal can be:
  • •Allowed (the appeal succeeds — planning permission is granted)
  • •Dismissed (the appeal fails — the refusal is upheld)
  • •Allowed with conditions (permission is granted but with the Inspector's conditions)

The Inspector's decision can only be challenged in the High Court on a point of law (Section 288 application).

Success Rates and Practical Considerations

**National statistics:** Nationally, approximately 35–40% of householder planning appeals are allowed (figures vary year to year). In London, success rates tend to be slightly lower because London borough planning policies are often more restrictive, but well-prepared appeals for reasonable proposals succeed regularly.

  • **Appeals that commonly succeed:**
  • •Proposals refused on grounds that do not reflect an accurate assessment of the design and its impact
  • •Proposals where the authority's reason for refusal is internally inconsistent (e.g., a refusal citing 'excessive bulk' when neighbouring similar-scale extensions have been approved)
  • •Proposals where an Inspectorate appeal decision on a directly comparable proposal in the same area exists and was allowed
  • •Proposals refused on highway grounds where the highway impact is objectively minimal
  • **Appeals that typically fail:**
  • •Proposals genuinely contrary to the adopted development plan and local policy without clear material planning considerations justifying an exception
  • •Proposals in sensitive Conservation Areas or adjacent to Listed Buildings where harm to heritage significance has been correctly identified
  • •Proposals where neighbour objections reflect genuinely material planning considerations (significant overlooking, loss of daylight below BRE standards)

**Using a planning consultant:** For a householder appeal, it is possible to proceed without professional representation. However, a planning consultant experienced in London appeals can significantly improve the quality of the grounds of appeal, know which policy arguments are most effective, and identify relevant appeal precedents. Typical planning consultant fees for a written representation appeal: £1,500–£4,000.

**Free resubmission as an alternative:** If the reasons for refusal are design-related and a modified scheme could address them, a free resubmission is often faster than an appeal (4–8 weeks for determination vs. 24–36 weeks for an appeal). The planning consultant can advise whether to appeal the original proposal or redesign and resubmit.

Frequently Asked Questions

How long does a planning appeal take in London?▼
Written representation appeals (the most common procedure for householder applications) typically take 24–36 weeks from the appeal being lodged to the Inspector's decision. Hearings and inquiries take longer. The local authority's refusal date gives the 12-week window within which the appeal must be lodged.
How much does it cost to appeal a planning decision in London?▼
The appeal itself is free to make — there is no Planning Inspectorate fee. If you appoint a planning consultant to prepare the grounds of appeal, their fees are typically £1,500–£4,000 for a householder written representation appeal. If the appeal is unsuccessful, these costs are not recoverable from the local planning authority (though a costs application can be made where the LPA has behaved unreasonably).
Should I appeal or resubmit a revised scheme?▼
If the reasons for refusal are design-specific (scale, massing, materials, overlooking) and a revised design could address them, resubmission is often the faster route — the first resubmission within 12 months is free. If the reasons for refusal are based on policy interpretation that you believe is incorrect, or the authority is applying a policy inconsistently, an appeal (or parallel appeal and resubmission) may be more appropriate. A planning consultant can advise on the strongest strategy.

Important Note

This guide is for general information only. Building regulations, planning rules, and legal requirements change regularly and vary by local authority. Always seek professional advice specific to your project and location. To talk through your own project, book a project review.

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