What a validation refusal really costs

An application that fails validation has not been made. The determination period does not start, the consultation does not go out, the case officer is not allocated, and the eight or 13 weeks you promised the client begins from whatever date the authority eventually accepts the submission. On a scheme tied to a funding date or a committee cycle, a week lost at validation is routinely worth more than the whole fee for the supporting documents.

The direct costs are small. The consequential ones are not.

Why the clock has not started

Validation is governed by article 11 of the Town and Country Planning (Development Management Procedure) (England) Order 2015, which sets out the national requirements every application must carry and allows the authority to require further information from a published local list. Until all of those are supplied, the authority has no valid application in front of it.

That has two effects an architect feels immediately. The statutory period runs from the valid date, so an application submitted on 3 March and validated on 24 March is a 24 March application. And the authority has no duty to progress anything in the meantime, so the three weeks are not spent in a queue, they are spent nowhere.

Authorities differ in how they handle it. Some ring and ask for the missing plan the same day. Others send a standard letter listing every deficiency, wait, then send another when the reply is incomplete. Either way the clock is yours to lose.

The failures that come back most often

Validation deficiencies cluster, and almost all of them are administrative rather than substantive.

• The ownership certificate is wrong, or an agricultural holdings declaration has been left blank where land is let.
• The fee does not match the proposal, usually because floorspace has been calculated gross internal rather than as the regulations require, or because a mixed scheme has been charged on one category only.
• The site location plan has no north point, no scale bar, or a red line that does not include the access.
• Drawings are undated and unnumbered, or a revision has been superseded in the drawing set but not in the schedule.
• No Design and Access Statement where one is required, which includes major development and, in a conservation area or World Heritage Site, development involving one or more dwellings or 100 m² of floorspace.
• The biodiversity gain statement is missing, since applications now have to state whether the applicant believes the biodiversity gain condition applies and why.
• A fire statement has not been supplied for a relevant building, which is a validation requirement rather than something to be resolved later.
• Existing and proposed levels are absent on a sloping site, so the proposal cannot be assessed.

None of those is difficult. All of them are the sort of thing that goes wrong when the pack is assembled on the afternoon of submission.

Local list items beyond the national requirements

The local list is where the real variation sits, and it is the reason a practice working across six authorities cannot run one checklist. Common local items include a parking and access statement for anything above a single dwelling, a tree survey where any tree is within falling distance, an acoustic report for residential near a commercial use, contaminated land screening on any previously developed site, a drainage statement regardless of flood zone, and a heritage statement for any site within a defined distance of a listed building.

There is a limit on what an authority can demand. Article 11 requires the local list to be published, and a requirement is only enforceable if the list has been published or reviewed within the two years preceding the application. If you are asked for a document that does not appear on a current published list, say so in writing and cite the article. Authorities do withdraw requests when challenged on that basis.

There is no statutory appeal against a refusal to validate. The practical routes are a written argument to the validation team citing article 11, escalation to the development management manager, and in the last resort judicial review, which no small scheme can justify. So the argument is worth having early and politely.

What a lost committee cycle costs

For anything heading to committee, the cost of invalidity is measured in cycles rather than days. Most authorities meet monthly, and the report deadline falls roughly two to three weeks before the meeting. Miss it and the next slot is four to six weeks later.

Price that properly for a client. Four weeks of interest on a bridging facility, four weeks of an option or conditional contract running down, a build programme pushed past a winter, and sometimes a survey window missed. An ecology season is the sharpest version: a validation delay in late August can push an emergence survey into the following May, because the survey season for bats runs to September.

Specialist evidence has its own lead time on top of all this, and budgeting a noise survey and its monitoring period shows how long a single local list item can take to produce.

Fees, refunds and the free resubmission you may have lost

Three financial points are worth knowing precisely.

Where an application is never made valid and is returned, the fee is normally refunded, though authorities may retain an administrative element and practice varies. Ask before assuming.

Where an application is valid but the authority fails to determine it within 26 weeks, the fee regulations provide for a refund in defined circumstances, subject to exclusions including agreed extensions of time. Check the current fee regulations, because the fee schedule and this provision have both been amended since they were introduced and the figures are indexed annually.

The third point catches people out. The free resubmission, the one further application of the same character on the same site at no fee within 12 months, depends on the earlier application having been valid. An application returned as invalid never earns one, so a careless first submission can cost a fee that would otherwise have been waived. Planning fee exemptions and the free resubmission sets out the conditions.

Keeping a validation tracker that earns its keep

A tracker only works if it is per authority and maintained from what actually happens, not from the published list alone.

Record, for each authority you submit to: the date the local list was last reviewed, the items that go beyond the national requirements, the format quirks that have caused a query before, the named validation officer if there is one, the typical time from submission to valid date over your last five applications, and the committee calendar with report deadlines. Add a column for the items the authority asked for that were not on the list, because a pattern there is worth raising formally.

Then use it as a pre-submission sign-off rather than a reference document. Someone other than the person who drew the scheme should tick it.

Checking the local list before you submit

Download the current validation checklist from the authority's website on the day you submit, not from a folder saved last year. Confirm the fee against the Planning Portal calculator for the actual category of development. Confirm the certificate and any notices. Confirm that every drawing referenced in a statement exists in the pack with the same number. And confirm the description of development says what the drawings show.

Drafting the narrative documents to a consistent structure makes this quicker, because the omissions become visible. Browse the 66 PlanScope report types to see which documents a scheme is likely to need, and see PlanScope pricing for the per-report and Professional options if you are producing these at volume.

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