What to Do When Planning Permission is Refused in London

The first step after a refusal is to read the decision notice carefully. The LPA must give written reasons for refusal, and those reasons determine your best next step.

Common reasons for refusal in London residential applications:

Overdevelopment / excessive scale: the proposal is considered too large relative to the original dwelling, the plot, or the surrounding buildings. Common in loft conversions and rear extensions that exceed typical proportions.

Harm to the character and appearance of the area: the design, materials, or form of the proposal does not respect the character of the street or neighbourhood. Particularly common in conservation areas and where the surrounding buildings have a strong established character.

Harm to neighbouring amenity: the proposal would cause unacceptable harm to a neighbour through loss of daylight, loss of outlook, overlooking, or noise. This is the most common reason for refusal of double-storey and side extensions close to boundaries.

Contrary to development plan policy: the proposal does not comply with a specific policy in the Local Plan or the London Plan. Many London boroughs have specific policies on affordable housing, design quality, housing density, and heritage.

Inadequate information: occasionally applications are refused because supporting documentation (design and access statement, heritage statement, tree survey) was missing or inadequate.

The wording of the refusal reasons matters: the LPA should identify the specific policy or consideration being cited. This gives you the basis for either an appeal argument or a design response.

You have the right to appeal a refusal of planning permission to the Planning Inspectorate. For householder applications (extensions, loft conversions, and similar works to a single dwelling), the appeal is submitted to the Planning Inspectorate and determined by an Inspector appointed by the Secretary of State.

Time limit: householder planning appeals must be submitted within 12 weeks of the date of the refusal decision. The appeal form is submitted online via the Planning Inspectorate's GOV.UK portal.

Appeal methods: most householder appeals are determined by written representations — you submit your case in writing, the LPA submits their response, and the Inspector determines the appeal on the papers. This is the fastest and cheapest method. Hearing and inquiry procedures exist for more complex cases but are unusual for residential householder appeals.

What the Inspector considers: the Inspector considers the same material planning considerations as the LPA — development plan policies, the London Plan, national planning policy (the NPPF), and other material factors. The Inspector is independent of the LPA and must make their own assessment.

Appeal success rates: nationally, around 30–40% of householder planning appeals succeed. However, the success rate varies significantly depending on the quality of the appeal case and the strength of the refusal reasons. Where the LPA's reasons are weak or inconsistent with appeal decisions on comparable cases, the success rate is higher.

Cost of appeals: there is no fee for submitting a householder planning appeal. However, if you instruct a planning consultant or architect to prepare the appeal statement, their fees typically run to £1,500–£3,500.

Timescale: householder written-representation appeals typically take 4–8 months to be determined by the Planning Inspectorate.

For many householder applications, the most practical route after refusal is to revise the scheme in response to the refusal reasons and resubmit.

Free resubmission: in England, you can submit one revised planning application within 12 months of the date of the original refusal without paying the planning application fee again. This applies to householder applications. The revised application must be for the same or a similar development — you cannot use the free resubmission to submit a completely different scheme.

How to use the free resubmission: analyse the refusal reasons, redesign the scheme to address them, produce revised drawings, and resubmit. If the refusal was for scale, consider reducing the footprint or height. If for materials, revise the materials specification. If for design, engage an architect with experience of the LPA's specific design policies and expectations.

Pre-application advice before resubmitting: before resubmitting, it is strongly recommended to seek pre-application advice from the LPA planning department. Most London boroughs offer a formal pre-application advice service (at a fee). Pre-application discussions allow you to understand the specific design changes that would be acceptable, reducing the risk of a second refusal.

When not to resubmit: if the scheme is fundamentally incompatible with local planning policy (for example, a three-storey rear extension in a conservation area), revision alone may not be enough. In these cases, exploring the appeal route or a radically different design approach may be more productive.

Pre-application advice is a formal engagement with the LPA planning department before submitting an application. It allows you to present your proposed scheme and receive written feedback from a planning officer on its acceptability.

When to use pre-application advice: before a first application on a complex or sensitive site; before resubmitting after refusal (essential, in most cases); before a scheme involving heritage assets (listed buildings, conservation areas); and where the planning position is genuinely uncertain.

Cost: London borough pre-application advice fees vary. For a householder extension, typical fees range from £200–£500 for a minor advice meeting. More complex applications (larger schemes, heritage, commercial) cost more.

What pre-application advice gives you: written feedback from the planning officer on the scheme's strengths and weaknesses; guidance on which policy requirements must be addressed; an opportunity to discuss design changes before committing to drawings; and evidence (if the application is later refused) that the LPA engaged with you and either supported the approach or clearly identified the changes required.

Limitations: pre-application advice is not a guarantee of approval. The officer providing advice does not determine the application — the determination is made by the committee or by a different officer under delegated authority. However, following the pre-application advice closely significantly improves the chances of approval.

London has a higher design quality threshold than most of England. The London Plan (the Mayor of London's spatial development strategy) applies across all London boroughs alongside each borough's Local Plan.

London Plan Policy D3 (Optimising site capacity through the design-led approach): requires applicants to demonstrate that the design optimises the site's capacity. This can be used as a reason for refusal if the LPA considers the design underperforms (too small) or overdevelops (too large) relative to the site context.

London Plan Policy D4 (Delivering good design): requires development to achieve good design outcomes. Poor architectural quality, unsympathetic materials, or designs that harm the character of the area can be refused under D4.

Conservation area policies: all London boroughs with conservation areas have specific Local Plan policies on the design of extensions, alterations, and new buildings within them. These typically require: materials to match or complement the existing building; designs that are subordinate to the host building; avoidance of flat roofs where the character of the area is defined by pitched roofs; and careful treatment of windows and doors.

Design and access statements: a Design and Access Statement explaining the design approach, how it responds to the site context, and how it relates to local design guidance is required for most applications in London. A well-prepared DAS that demonstrates understanding of the local character and the relevant policies significantly improves the application.

After a refusal, the quality of the planning and design response is critical. Many homeowners who resubmit without specialist advice repeat the same design mistakes and receive a second refusal.

What a planning consultant can add: analysis of the refusal reasons in the context of development plan policy; advice on the strength of an appeal case; preparation of an appeal statement; engagement with the LPA on pre-application discussions; and assessment of whether the scheme as designed can be made approvable.

What an architect can add: redesign of the scheme to address the specific design and visual amenity refusal reasons; production of revised drawings with clear annotations showing how the refusal reasons have been addressed; a new or revised Design and Access Statement.

Design-and-build approach: a design-and-build contractor with in-house or closely integrated architectural and planning expertise can manage the entire process — from initial design through planning, revision after refusal if needed, and construction. This integrated approach reduces the risk of the scheme being designed for aesthetics without buildability, or being planned without considering the construction implications.

Costs of specialist support: planning consultant to manage a householder appeal: £1,500–£3,500. Revised architectural drawings for resubmission: £800–£2,000 depending on the complexity of the changes. Pre-application advice meetings (preparation and attendance): £500–£1,500.