Appealing non-determination after the eight weeks expire

A non determination appeal becomes available the moment the statutory period for deciding your application expires without a decision, which for a minor householder or small residential scheme is eight weeks from validation. You then have six months from that expiry date to lodge the appeal under section 78 of the Town and Country Planning Act 1990. Most self builders who reach that point should not use it immediately, and the reason is that the appeal takes the application out of the council's hands entirely, including the officer who was two weeks away from recommending approval.

When the right to appeal arises

The right depends on the expiry of a period prescribed by the Town and Country Planning (Development Management Procedure) (England) Order 2015, not on your patience running out. The clock runs from the date the authority validated the application, which is often later than the date you submitted it, so check the validation date on the public register rather than your own records.

If the authority has issued a decision, even a refusal you disagree with, the non determination route closes and you appeal the refusal instead. If the authority has issued nothing and no extension has been agreed in writing, the route is open.

One procedural point matters more than any other. Once you lodge a section 78 appeal the authority loses the power to determine the application. An approval that was sitting in a delegated report waiting for a signature cannot be issued.

The statutory periods, and the ones people get wrong

The period for a major application catches small developers out regularly. A scheme of 10 dwellings is major, so the eight weeks you were counting is actually thirteen. The 0.5 hectare site area trigger does the same thing to schemes of five or six houses on a generous plot.

Householder appeals are also subject to a different deadline. For a householder application the appeal must be lodged within twelve weeks rather than six months, and that applies to non determination as well as refusal.

Extensions of time, and what agreeing one costs you

Article 34 of the 2015 Order allows the period to be extended by written agreement. Authorities ask for extensions as a matter of routine, often in a short email near the end of week seven.

Agreeing one is usually right. It keeps the case officer engaged, it allows a consultee response to arrive, and it avoids an appeal that would decide your scheme on a thin evidence base. But understand what you give up. The right to appeal non determination is suspended until the extended date passes. And an agreed extension removes the authority's exposure under the planning guarantee, the arrangement under which the application fee is refunded where a decision is not issued within 26 weeks and no extension has been agreed.

So agree extensions in short, specific increments tied to something identifiable. Four weeks to receive the highway authority's response is a reasonable request. An open ended extension with no end date is not, and you do not have to sign it.

Weighing an appeal against waiting

Three questions settle it in practice.

What is the authority actually waiting for. If the delay is an outstanding statutory consultee response on drainage, ecology or highways, an appeal does not make that response appear. The inspector will want the same information, and the Planning Inspectorate will consult the same bodies.

What would the officer recommend. A frank conversation is worth having. Where the officer's position is supportive and the holdup is workload or a committee cycle, appealing converts a likely approval into a contested appeal.

Whether anything is being gained by delay. Where the authority is plainly using time to avoid determining a scheme it cannot refuse on defensible grounds, the appeal is the correct answer, and it is also the only lever you have.

How the authority responds when there is no decision notice

The authority produces a statement setting out what it would have decided and its putative reasons for refusal. That document is written specifically for the appeal, with hindsight and without the pressure of a committee date, so it is frequently stronger than the refusal reasons you would have received.

Expect new ground. Objections that were never raised during the application can appear in the putative reasons, and you will be answering them for the first time at appeal, with no opportunity to amend the scheme in response. The Wheatcroft principles limit how far a scheme can be changed during an appeal, so a design fix that would have taken a revised drawing during the application is often unavailable.

Third parties also get another consultation. Neighbours who did not object the first time may do so, and our note on third party involvement in someone else's appeal sets out the routes they have.

Assembling the evidence when nothing was refused

Without a decision notice you have no refusal reasons to answer, so the grounds of appeal have to be built from the policy framework and the case file.

Start with the officer's case file and the consultee responses on the public register. Those documents show what the authority was troubled by. Then write the planning case positively against the adopted local plan policies and the current National Planning Policy Framework, rather than defensively. A well structured Planning Statement that works through each relevant policy, the material considerations and the planning balance does most of the work here, and appeal decisions on comparable sites can support the argument, provided they are presented as indicative of how inspectors have approached an issue rather than as precedent. Our piece on using appeal decisions in a planning application sets out how to cite them properly.

Two practical items get forgotten. An inspector cannot complete a section 106 agreement, so if your scheme needs obligations you must submit an executed unilateral undertaking before the appeal is determined. And for residential development the biodiversity gain condition applies, so the biodiversity gain plan route still has to be deliverable; the statutory metric behind a Biodiversity Net Gain Assessment has to be completed by a competent person under the Environment Act 2021 regime, which is not something to start during an appeal.

The risks worth pricing in

The inspector determines the application afresh and may refuse it. There is no fallback to the officer's unwritten support.

The timetable is not obviously quicker. A written representations appeal takes months, and if the case goes to a hearing or an inquiry it takes longer than the determination you were waiting for.

Costs can be awarded either way where a party has behaved unreasonably, and non determination appeals are one of the situations in which authorities do occasionally face an award, though a lengthy delay alone is not usually enough.

The relationship matters afterwards. You will be back in front of the same authority for condition discharge, a section 73 variation or the next site.

If you are still assembling the pack and want to see which supporting documents a scheme of your size and location is likely to need before you decide, enter the postcode on PlanScope and work through the constraints first.

This is general guidance, not legal advice, so check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.