Certificate A to D: the ownership declaration explained

Every planning application form in England ends with an ownership certificate, and you have to tick one of four letters. Certificate A says you own the whole application site and nobody else has an interest in it. Certificates B, C and D say somebody else does, and that you have told them. Get the planning certificate A B C D question wrong and the council can refuse to validate, or, worse, grant a permission that sits on a false declaration.

The certificates come from section 65 of the Town and Country Planning Act 1990 and articles 13 and 14 of the Development Management Procedure Order 2015. They are short, and they are the part of the form self-builders most often sign without reading.

What the certificate is actually for

Planning permission runs with the land, not with the applicant. You can apply for permission on land you have never owned, which is exactly what happens with option agreements, promotion agreements and applications made before completion. The ownership certificate is the safeguard: it makes sure anyone with a legal interest in the site knows an application has been made and can comment on it before it is decided.

"Owner" has a specific meaning here. It covers the freeholder and any leaseholder whose lease still has at least seven years to run. A tenant on an annual business lease is not an owner for this purpose. Neither is a mortgage lender, an occupier without a lease, or a neighbour whose boundary happens to touch the red line.

Two things follow. First, the red line you draw defines who has to be notified, so a red line pulled wide to include a strip of verge or a shared drive can pull a stranger into your notice list. Second, the certificate is judged against the position 21 days before the application is made, not on the day you submit.

When Certificate A applies, and when it does not

Certificate A is for the applicant who owned every square metre inside the red line throughout the 21 days before the application, with no agricultural tenant anywhere on it. Sole registered proprietor, whole site, nobody else.

It stops being available more often than people expect:

• Joint ownership where only one owner is applying. Two names on the title means the other owner is served under Certificate B, even if they are your spouse.
• A site assembled from two titles where completion on the second is still pending.
• A shared access, private drive or service strip inside the red line that belongs to a management company or to the neighbours.
• Land bought within the 21-day window, so the previous owner was an owner during part of it.
• Any part of the site let as an agricultural holding.

If you are applying on land you have agreed to buy, you are not the owner and Certificate A is not open to you. That is not a problem in itself. Certificate B with a served notice is entirely normal, and councils see it every week.

Serving notice under Certificates B, C and D

The notice itself is prescribed. It tells the recipient that an application has been made, describes the development, names the authority and says how to comment. It has to be served on every other owner and on every agricultural tenant whose name and address you know, and it must go out at least 21 days before the application is submitted.

Certificate B is the common case: you know who the other owners are and you have served them all. Certificate C covers the mixed position where you have served the people you could identify and could not trace the rest. Certificate D is for the site where you cannot identify any other owner at all.

For C and D there is an extra step. You take reasonable steps to trace the missing owners, which in practice means a Land Registry title search, an index map search for unregistered land, local enquiries and an inspection of the site itself. Then you publish the notice in a newspaper circulating in the area, and the application cannot be made until 21 days after that publication date.

Keep the timing in mind when you programme the application. A Certificate D route adds three weeks before you can even submit, which matters if you are working back from a funding date or a reserved matters deadline attached to an outline permission.

The agricultural holdings declaration

Sitting alongside the ownership certificate is a declaration about agricultural tenancies. It asks whether any part of the application site is, or was in the 21 days before the application, an agricultural holding, and if so whether notice has been served on the tenant.

This catches far more sites than farmers expect. A paddock let on a grazing agreement, a field let under a farm business tenancy, or a barn and yard let with land can all be part of an agricultural holding. The tenant has a legal interest in how the land is used and a right to know that a change is proposed.

The declaration has to be completed even where the answer is "none of the land is an agricultural holding". Leaving it blank is a validation failure on its own, and it is one of the most common reasons a rural application bounces back on day one.

What happens if you sign the wrong certificate

Knowingly or recklessly issuing a certificate that is false or misleading is a criminal offence under section 65 of the 1990 Act, punishable by a fine. That is the headline, and it is rarely the practical consequence.

The practical consequences are these. The council can decline to validate, which costs weeks. An owner who was not served can complain to the authority, and an authority that has granted permission on a defective certificate may find the permission challenged. The courts have looked at whether an error in a certificate invalidates the permission that followed and have not treated every mistake as fatal, which is reassuring and no reason at all to rely on it. A lender's solicitor reviewing the planning history at sale will see the certificate, and an unexplained Certificate A over a jointly owned title is the sort of thing that stalls a transaction.

An honest mistake found early is fixable. Tell the case officer, serve the notice properly, and ask the authority to accept a corrected certificate. Most will, and the application is usually re-advertised rather than restarted. The same applies to a later section 73 application to vary a condition, which needs its own fresh certificate rather than a copy of the one from the original permission.

Evidence to keep

Councils rarely ask to see proof of service. Objectors, buyers and inspectors sometimes do, and by then the file is two years old.

Keep a dated copy of each notice as served, a record of the address it went to and the date it was posted, and the certificate of posting from the Post Office rather than a plain postage receipt. For newspaper notices, keep the whole page including the masthead and the date, not a clipping of the advertisement. Keep the Land Registry title downloads and the index map result that supported your enquiries, because they show what you knew at the time. And keep a note of the date you calculated the 21 days from.

None of this is the same as a lawful development certificate, which is a separate application under sections 191 and 192 confirming that works are lawful. If someone tells you to "get a certificate" for an extension, check which one they mean. Our guide to the lawful development certificate covers that route.

Once the ownership position is settled, the rest of the validation pack is a question of which supporting documents your council expects. Enter your postcode on PlanScope to see which of the 66 report types the site is likely to trigger, then draft the ones you need.

This is general guidance, not legal advice; 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.