The cost of failing validation and resubmitting
The clock does not start until an application is valid. A look at what validation checks, what a rejected submission really costs and how to get it right first time.
A planning application validation failure costs a fortnight before anyone has looked at the design. The determination period does not start until the application is valid, so an application submitted on the first of the month and validated on the fifteenth has lost two weeks of a build programme, two weeks of survey currency and two weeks of whatever the client is paying to hold the site. The fee is usually the smallest part of it.
Validation is an administrative check, not a planning judgement. The officer doing it is comparing what arrived against a list, and the most common reason for failure is that a document on the council's published local list was not supplied.
What validation checks
There are two layers. The national requirements are set out in the Town and Country Planning (Development Management Procedure) (England) Order 2015 and cover the completed form, the correct fee, the ownership certificate and any agricultural holdings notice, a location plan identifying the land, the drawings needed to describe the proposal, a design and access statement where one is required, and for relevant buildings a fire statement under Article 9A.
Since the biodiversity net gain regime took effect, applications for planning permission also have to be accompanied by a statement about whether the applicant believes the biodiversity gain condition applies, together with the supporting information the regime requires where it does. That statement is now one of the more common omissions on small applications.
The second layer is the council's own local list, which sets out the additional information it requires for particular types of application in its area. Local lists have to be published, kept up to date and reviewed periodically, and a requirement that is not on the published list is not a validation requirement.
Local lists against the national requirement
Every authority's list is different, and that is the single biggest source of avoidable failure for a practice working across boundaries.
One council asks for a drainage statement on every application for a new dwelling. Its neighbour asks for one only above a threshold. A third asks for a preliminary ecological appraisal wherever any vegetation is affected, and a fourth asks for a full arboricultural method statement rather than a survey. None of these is unreasonable in itself. All of them are traps if you assume last month's checklist applies.
Download the list from the council's website on the day you start the application, not from your own records. Lists are revised, and the version in a practice's template folder is usually the version that was current when the template was written.
Where the list refers to a threshold, check whether the threshold is measured on gross floorspace, net additional floorspace or site area. That distinction decides whether a Design and Access Statement is required on a good many borderline schemes.
The real cost of a rejected submission
Break it down, because the headline number is not the fee.
| Cost | What it is |
|---|---|
| Programme | Two to four weeks between submission and re-validation, longer over a holiday period |
| Fee handling | The fee is normally returned on withdrawal, but the transaction and the re-payment take time |
| Professional time | Responding to the invalidation, producing the missing document, re-uploading and re-checking |
| Survey currency | Seasonal survey data ages, and a delayed submission can push an ecology report out of date |
| Client confidence | Harder to quantify and the one that damages a practice most |
The professional time is the item practices under-count. Answering a validation email, commissioning a short report, chasing it, checking it and resubmitting is half a day of fee-earning time that was never quoted for, on top of the document cost itself.
And the programme cost compounds. An application that misses a committee agenda deadline by three days waits a month, not three days.
Documents most often missing
Across practice types, the same items come back:
- a biodiversity net gain statement, or the metric and habitat plan where the condition applies
- an ownership certificate signed with the wrong certificate type, or a missing notice to a tenant or agricultural holder
- a location plan at the wrong scale, without a north point, or with a red line that omits the access
- existing elevations, where only the proposed ones were prepared
- a design and access statement for an application in a conservation area, where the practice assumed the householder exemption applied
- a drainage or surface water statement required by the local list
- a fire statement for a relevant building, which many practices still treat as a building control matter
Ownership certificates deserve a note. They are a statutory declaration, the certificate type has to match the land ownership at the date of the application, and a certificate that is wrong can render a permission vulnerable long after it is granted.
Challenging an unreasonable validation request
Councils sometimes ask for information that is not on the published list, or that is disproportionate to the scale of the proposal. Both are worth challenging, politely and in writing, on the day the request arrives.
The Planning Practice Guidance on making an application sets out the position: a local list requirement should be reasonable having regard to the nature and scale of the proposal, and a request for information that is not on the published list is not a validation requirement at all. Say which of those two arguments you are making, and offer an alternative where you can, such as a short statement in place of a full report.
Escalate to the validation team leader if the first reply repeats the request. There is no formal appeal against a refusal to validate, which makes the correspondence trail the only protection you have, so keep it factual and dated.
Where the point is arguable rather than clear cut, supplying the document is usually faster than winning the argument. Weigh the cost of the report against the cost of two more weeks.
Building a submission checklist
A practice checklist has three columns: the requirement, the source (national or the named local list with its version date), and the document that satisfies it. Build it per application rather than per practice, and have someone other than the author sign it off.
Five checks catch most failures:
- The red line includes everything needed for access and for the development itself, and the blue line covers other land in the applicant's control.
- Every drawing carries a unique number, a revision, a scale and a scale bar.
- The certificate type matches the ownership position on the day of submission.
- The biodiversity net gain position is stated, with the exemption identified if one is claimed.
- The fee has been calculated from the current schedule and paid by a route the council can match to the application.
Where the scheme needs several technical documents, a Biodiversity Net Gain Assessment and the ecology work behind it have the longest lead time, so book them before the drawings are finished.
Time lost against money lost
The money is recoverable. A returned fee comes back, a missing statement can be written in a day, and a drawing can be reissued in an afternoon.
The time is not. A scheme that misses the spring survey season loses months, a scheme that misses a funding date can lose a site, and an application that slips past a local plan adoption may be determined against a different policy framework than the one it was designed for.
That is the argument for spending more at the front end. The cost of a Planning Statement or a short drainage note is small against a month of programme, and the practices that validate first time are generally the ones that treat the local list as a design input rather than a submission formality.
For the drafting itself, PlanScope pricing covers one free report, £50 per report, or £150 per month for unlimited reports on the Professional tier for architects and agents.
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.
Frequently asked questions
Does the eight week period start when I submit or when the application is valid?
On validation. The determination period runs from the day after a valid application is received, so anything missing at submission delays the start of the clock rather than the end of it. An application submitted on the first and validated on the fifteenth has simply lost two weeks.
Can a council require a document that is not on its local list?
Not as a validation requirement. Local lists have to be published and kept up to date, and requirements should be reasonable having regard to the nature and scale of the proposal. Challenge the request in writing on the day it arrives, say which ground you are relying on, and escalate if the reply repeats it.
Is the fee refunded if an application is invalid?
The fee is normally returned where the application is withdrawn before validation, though the transaction takes time and some councils apply an administrative process. The fee is rarely the meaningful cost. Professional time spent responding, commissioning and resubmitting usually exceeds it on a small application.
What is the biodiversity net gain validation requirement?
Applications for planning permission must be accompanied by a statement of whether the applicant believes the biodiversity gain condition applies, together with the supporting information required where it does. Missing that statement is now one of the more frequent reasons small applications fail validation.
Is there an appeal against a refusal to validate?
There is no formal right of appeal against non-validation. The practical routes are correspondence with the validation team, escalation to a team leader, and in extreme cases legal challenge. Because of that, a dated and factual correspondence trail is the only real protection an applicant has.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.