Having a planning application refused is not the end of the road. If you believe the council got it wrong — whether by misapplying policy, failing to take relevant factors into account, or acting inconsistently with decisions on comparable sites — you have a statutory right to appeal. Understanding the process before you commit to it will save you significant time, money, and frustration.
When You Can Appeal
You can appeal in three distinct situations:
- Refusal — the most common trigger. Your application was refused and you believe the refusal was wrong in planning policy terms.
- Non-determination — the council failed to reach a decision within the statutory period (8 weeks for householder and minor applications, 13 weeks for major applications). You can appeal as if the application had been refused.
- Conditions — you were granted planning permission but believe one or more of the conditions attached are unreasonable, unnecessary, or unenforceable.
You cannot appeal simply because you disagree with the outcome. The appeal must be based on material planning considerations — policy compliance, design quality, impact on amenity, highways, ecology, heritage. Personal circumstances and commercial interests are not material considerations.
For context on what planning permission requires in the first place, and what falls under permitted development, see our planning permission UK guide and permitted development rights UK guide.
The Planning Inspectorate
Appeals in England are decided by the Planning Inspectorate (PINS), an executive agency of the Ministry of Housing, Communities and Local Government. PINS appoints a Planning Inspector — an experienced professional, often a chartered planner or architect — who reviews the case independently of both you and the council. In Wales, appeals are handled by the Planning and Environment Decisions Wales (PEDW).
The Inspector is not a judge. Their role is to consider the planning merits of the case on the evidence presented. They can allow an appeal (granting permission), dismiss it (upholding the refusal), or allow it with modified conditions.
The Three Appeal Procedures
| Procedure | Typical Use | Average Duration | Cost to Appellant | Success Rate |
|---|---|---|---|---|
| Written Representations | Most householder and minor commercial appeals | 20–28 weeks | £0 (England) | ~35–38% |
| Hearing | Medium complexity; where discussion is needed | 36–52 weeks | £0 (England) | ~40–45% |
| Inquiry | Major applications, complex policy disputes | 52–78 weeks | £3,000–£50,000+ (solicitors/barristers) | ~45–50% |
Written representations is the default procedure for the majority of householder appeals. You submit your grounds of appeal in writing; the council responds; you can reply to their response. The Inspector visits the site and makes a decision based on the written record. No hearing takes place. This is the most cost-effective route and appropriate for most domestic extensions and changes of use.
A hearing is a structured discussion between the appellant, the council, and any interested parties, chaired by the Inspector. It's less adversarial than an inquiry but allows the Inspector to question both parties. Typically used where the issues are moderately complex or where oral explanation would help clarify the evidence.
A public inquiry is quasi-judicial and involves evidence-in-chief, cross-examination, and closing submissions — typically conducted by solicitors and planning barristers. It's appropriate for major development proposals, cases involving significant public interest, or appeals with complex technical evidence. The costs are high; for a typical householder the inquiry route is rarely proportionate.
How to Write Strong Grounds of Appeal
Your grounds of appeal are the most important document in the process. A weak grounds statement will almost certainly result in dismissal. A strong one identifies the specific policy misapplication and builds a clear, evidence-based argument.
Structure your grounds around:
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The development plan policies at issue — identify every policy the council cited in its refusal and challenge each one on its merits. The council must show your proposal is contrary to the development plan (Planning and Compulsory Purchase Act 2004, s.38(6)). If it isn't clearly contrary, permission should normally be granted.
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Material considerations — identify factors that weigh in favour of your proposal: economic benefits, design quality, sustainability, and housing supply. Section 38(6) requires the decision to be made in accordance with the plan unless material considerations indicate otherwise.
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Comparable approvals — if the council has approved similar development on comparable sites, consistency of decision-making is a legitimate ground. Obtain the planning history from the council's online portal.
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National Planning Policy Framework (NPPF) — the NPPF is a material consideration in all appeals. Where local policies pre-date it or conflict with it, the NPPF takes precedence on key issues.
Section 78 vs Section 288
Section 78 of the Town and Country Planning Act 1990 is the standard planning appeal — the route described above.
Section 288 is a High Court challenge to the legal validity of an appeal decision. It is not a re-hearing of the planning merits. You can only challenge under s.288 if the Inspector made a legal error — acted outside their powers, failed to follow a required procedure, gave inadequate reasons, or made a decision that no reasonable Inspector could have reached. Costs start at around £10,000–£30,000 in legal fees and are only worth pursuing in cases involving high-value development or a clear legal error. The court does not substitute its own planning judgment for the Inspector's.
The Council's Ability to Grant Before Appeal
Once you've lodged an appeal, the council can still choose to grant the permission — but only if there has been a material change of circumstances since the refusal (for example, a relevant appeal decision on a nearby site, or a new NPPF policy update). In practice, this happens rarely, but it's worth contacting the planning officer after lodging to keep a dialogue open.
Costs Awards
In exceptional cases, the Planning Inspectorate will award costs against the council. This happens where the council behaved unreasonably in refusing the application or defending the appeal — for example, refusing on a ground that is clearly not supported by any policy, or failing to comply with procedural requirements. A costs application must be made at the time of the appeal and is decided by the Inspector alongside the main decision.
Costs awards against the appellant are also possible where you behave unreasonably — so avoid submitting appeals without genuine planning merit.
The Permitted Development Fallback
If your refused proposal could be achieved under permitted development rights, even in a less desirable form, the existence of that fallback is a powerful material consideration in your favour. The principle established in Niarchos (London) Ltd v Secretary of State is that an Inspector must take into account what the applicant could lawfully do without permission. If you could build a 3m rear extension under permitted development and have applied for a 4m extension, the 3m fallback significantly weakens the council's case for refusal.
For a full guide to what is and isn't permitted development, see our permitted development rights UK 2025 guide.
What to Do While You Wait
Appeals take months. Use that time productively:
- Submit a pre-application enquiry for a revised scheme that addresses the refusal reasons — if you get positive pre-app advice, you may be able to withdraw the appeal and resubmit without the cost and delay.
- Obtain a Lawful Development Certificate for any permitted development fallback position, confirming its validity.
- Gather comparable decision evidence for your appeal statement.
Enforcement Notices and Stop Notices
Appeals against enforcement notices (under s.174 TCPA 1990) are a separate track from planning appeals. If the council serves an enforcement notice alleging you've carried out development without permission, you have 28 days to appeal. A stop notice (which prevents further work during an appeal) cannot itself be appealed but can attract compensation if the enforcement notice is subsequently quashed. Breach of an enforcement notice is a criminal offence — do not ignore one.
Related Guides
- Planning Permission UK Guide — the full planning application process, timescales, and what triggers a requirement for consent
- Planning Permission Refused UK — what to do immediately after a refusal and whether to appeal or resubmit
- Planning Appeal UK Guide — the earlier overview of appeal routes and realistic success rates
- Permitted Development Rights UK Guide — the permitted development fallback in detail and how to confirm it with a Lawful Development Certificate
- Planning Permission for House Extension UK — extension-specific planning considerations and when you need consent
- How to Get Planning Permission Approved UK — pre-application strategy, design principles, and what officers look for
- Planning Conditions: How to Vary or Discharge Them — discharging pre-commencement conditions and varying conditions via s.73 after a planning decision
- Planning Enforcement: What Happens If You Build Without Permission in the UK — enforcement notice process, immunity periods, CLEUD applications, and your options if the council comes knocking
- Listed Building Consent: What Needs It, How to Apply, and Enforcement — when LBC is refused, the appeal route to the Planning Inspectorate is the same as for planning refusals; this guide covers what requires consent and the serious enforcement consequences
- Planning Appeal: What to Do If Your Application Is Refused — a focused practical guide to all three PINS routes, the 35% householder success rate, costs awards, and DIY vs planning consultant for written representations