Planning Appeal Success Rates in Camden and Barnet: What the Statistics Show

Introduction

When a planning application for a home extension or renovation is refused, the homeowner has the right to appeal to the Planning Inspectorate. Planning appeals are free to submit and can result in the refusal being overturned — but they take time, require careful preparation, and do not succeed in every case. Understanding the typical success rates for householder appeals in Camden and Barnet, and what factors distinguish successful from unsuccessful appeals, helps homeowners make informed decisions about whether to pursue an appeal or revise and resubmit.

This guide examines householder appeal statistics for north London, the grounds on which appeals succeed, and the practical implications for homeowners considering an appeal.

National Householder Appeal Statistics

Nationally, the Planning Inspectorate publishes appeal decision data that allows success rates to be calculated by type of appeal and by local authority. Householder appeals (for extensions, loft conversions and other domestic works) are the most common type of planning appeal. National average success rates for householder appeals handled by written representations are approximately 35–40% — meaning that around one-third to two-fifths of householder appeals succeed in overturning the local authority's refusal.

This headline figure conceals significant variation by local authority, by grounds of refusal, and by the quality of the appeal documentation submitted.

Camden's Appeal Performance

Camden is one of London's most restrictive planning authorities, with the Hampstead Conservation Area and numerous other conservation areas subject to particularly detailed scrutiny. Camden's refusal rate for householder applications is above the national average, reflecting the complexity of the conservation area and listed building constraints across much of the borough. However, Camden's appeal success rate is also somewhat above the national average — suggesting that some refusals are overturned where the council's reasons are considered disproportionate or insufficiently evidenced by the Planning Inspector.

Analysis of Camden appeal decisions shows that appeals succeed most often where:

• The planning officer refused on design grounds that the Inspector considered subjective or disproportionate to the harm identified
• The refusal relied on a policy whose application to the specific circumstances was arguable
• The LPA failed to consult properly or apply its own pre-application advice consistently
• The design quality of the refused scheme was demonstrably high — supported by a strong design and access statement and comparable consented schemes

Appeals against refusals on heritage grounds (listed building harm, harm to the character of a conservation area) are harder to win — Inspectors give significant weight to the heritage expertise of local planning authorities in sensitive conservation areas, and Camden's conservation officers are experienced advocates in appeal hearings.

Barnet's Appeal Performance

Barnet's householder appeal success rate is broadly in line with the national average. As a planning authority managing both dense inner suburbs and more suburban outer areas, Barnet handles a wider range of householder applications than Camden, and its appeal decisions reflect this diversity.

In Barnet, appeals succeed most often where:

• Extensions refused for overbearing impact are shown at appeal to be within the guidance in the Residential Extensions SPD and not materially different from approved schemes in the area
• Refused dormers or outbuildings are shown to comply with the design criteria in the SPD
• Refusals citing loss of garden space or overlooking are found by the Inspector to be inconsistent with the scheme's actual design
• The applicant provides a well-evidenced written representations statement addressing each reason for refusal point by point

Appeals against refusals in Barnet's conservation areas — particularly Hadley Green, High Barnet and East Barnet Village — are harder to win for heritage-related reasons, similar to the Camden position.

What the Data Cannot Tell You

Aggregate appeal statistics are useful for understanding the general landscape but cannot tell you whether a specific refused application should be appealed. The correct question is not "what is the success rate for Camden appeals?" but "does this particular refusal have grounds that a Planning Inspector would find compelling?"

The specific reasons for refusal are the starting point. Each reason must be assessed:

• Is the policy basis for the refusal clear and applicable?
• Is the factual assessment in the officer's report accurate?
• Does the proposed scheme comply with the cited policy or not?
• Are there comparable consented schemes that undermine the refusal reasoning?

Written Representations vs Hearing vs Inquiry

Most householder appeals are determined by written representations — a paper process without a formal hearing. See our written representations appeal guide for a full explanation of this process. Hearings are appropriate for more complex cases. Inquiries are rare for householder appeals.

Written representation appeals typically take 20–26 weeks from validation to decision. This is a significant programme commitment — homeowners should ensure they have professional support for the appeal documents and are prepared for the wait before the decision is issued.

When to Revise and Resubmit Instead of Appealing

Not every refusal should be appealed. Where the reasons for refusal are substantive — a genuinely overbearing design, a clearly harmful impact on a conservation area, a scheme that simply does not comply with the relevant policies — revising the design to address the objections and resubmitting is often faster, cheaper and more likely to succeed. A resubmission within 12 months of the original application is free. The programme for a resubmission (8 weeks determination) is significantly shorter than the appeal route (5–6 months minimum).

Conclusion

Planning appeals are a legitimate and sometimes effective route to overturning a refusal in Camden, Barnet and other north London boroughs. Success rates of 35–40% nationally mean appeals are genuinely worth considering where the reasons for refusal are arguable. However, careful professional assessment of the specific grounds — rather than reliance on average statistics — is the only sound basis for the decision. An architect and planning consultant who knows the relevant borough's policies and has experience of similar appeal decisions can assess whether a specific refusal has genuine appeal merit and prepare the strongest possible case if the decision is taken to appeal.