Ownership certificates A to D: a decision checklist
Signing Certificate A when someone else owns part of the site is the quiet mistake that undoes a permission. Work through the checks before you tick the box.
The planning ownership certificate is one tick box on the form and one of the few parts of an application that can undo a permission after it is granted. It declares who owned the land inside the red line and whether anyone else had to be told. Get it wrong knowingly and you have committed an offence under section 65 of the Town and Country Planning Act 1990. Get it wrong innocently and you have handed anyone who wants to challenge the permission a ready made argument.
Most errors come from the same place. The applicant looks at the house, sees that they own it, and signs Certificate A without looking at where the red line actually goes.
What the certificate declares and why it matters
Article 14 of the Development Management Procedure Order 2015 sets out the four certificates. Each one is a statement about ownership of the application site during the 21 days ending with the date of the application, plus a declaration about agricultural tenants.
The purpose is procedural fairness. An owner whose land is included in someone else's application has a right to know, because a permission can be implemented by anyone with the necessary interest and because the existence of a permission changes the value and the negotiating position of the land.
That is why the remedy for a defective certificate is not a slap on the wrist. The authority can treat the application as invalid, and a permission granted without proper notice is exposed to judicial review.
A decision checklist before you tick the box
Work through these in order, with the red line drawing in front of you.
- Print the site plan and trace the red line. Every parcel inside it is part of the application site, including any strip of verge, footway, shared drive, bin store, turning area or landscaping you have included.
- Order the title plans. Use the Land Registry search to check the registered title for each parcel, and note the tenure. Unregistered land is common on older rural holdings and pre-1990 transfers.
- List every owner. Freeholders, and leaseholders with seven years or more unexpired. Ignore lenders and licensees.
- Ask whether any part is or forms part of an agricultural holding, and identify any tenant.
- Decide whether the red line has to include the parcels you do not own. Often it does not, and the cleanest answer is to redraw the boundary.
- Choose the certificate that matches the facts, not the one that is easiest.
- Serve the notices, keep the proof, and record the dates on the certificate.
Step 5 deserves emphasis. Where the works themselves are confined to your land, pulling the red line back to your boundary and showing the adjoining land in blue removes the notice obligation entirely. Where the access, the visibility splay or the drainage run crosses someone else's land, it has to be inside the red line and notice has to be given.
Certificate A and when it is the right answer
Certificate A says that you owned all the land in the application site throughout the 21 days ending with the application date and that none of it is part of an agricultural holding.
It is correct more often than the horror stories suggest, and for a straightforward extension to a house you own outright it is the right answer. Three checks before you rely on it. That you completed the purchase more than 21 days ago, which catches applications made immediately after buying a plot. That the red line does not stray onto the highway or a shared drive. And that no part of the garden or paddock is let to a grazing tenant.
Where you bought the land 10 days ago, Certificate B is the answer, with notice served on the previous owner.
Serving notice for Certificate B
Certificate B says you have served notice on every other owner and agricultural tenant, and it records their names, addresses and the date of service.
Use the prescribed notice form rather than a letter of your own. Serve it by a method you can prove, which in practice means recorded delivery or personal service with a signed receipt, and keep the proof with the application file rather than in an inbox. Where the owner is a company, serve at the registered office. Where the owner has died, serve on the personal representatives, and where there are none, treat the owner as unknown and move to Certificate C.
The commonest recipients are the highway authority for a verge or footway crossing, a freeholder where you hold a long lease, a management company for a shared access, and a neighbour whose land carries the drainage. On rural sites add the landlord where you farm under a tenancy, which is one reason a barn conversion so often needs Certificate B rather than A.
Certificates C and D where owners are unknown
Certificate C applies where you know some of the owners but not all, and Certificate D where you know none of them.
Both require a notice published in a newspaper circulating in the locality, and both require you to state the steps taken to identify the owners. Reasonable steps means something more than a Land Registry search that came back with nothing: enquiries of neighbours, the local authority, the parish council, any solicitor known to have acted, and inspection of the site for evidence of occupation. Keep a dated note of each enquiry, because the certificate asks you to certify that you took them.
The publicity has a consequence for programme. The authority will not determine the application until 21 days after publication, so a newspaper notice placed late holds the decision up regardless of how quickly consultation responses come back. Unregistered ransom strips behind terraced gardens and long forgotten access lanes are the usual triggers, and they surface at the worst moment.
The agricultural holdings declaration
The same certificate carries a statement about agricultural tenancies. If any part of the site is or forms part of an agricultural holding, every tenant has to be notified.
Grazing licences, informal arrangements with a neighbouring farmer and land let on a seasonal basis all deserve a moment's thought here. An unwritten arrangement that has run for years may amount to a tenancy, and the safe course where there is any doubt is to serve notice, which costs a stamp and removes the argument. This is routine on paddock and field applications, including the kind of site behind a green belt householder extension where the garden merges into grazing land.
Access strips, verges and the owner you forgot
A short list of the parcels people include by accident:
- Highway verge or footway crossed by a new or widened access.
- A shared private drive owned jointly or by a third party.
- A service strip retained by the original developer of an estate.
- A ransom strip along a rear boundary.
- Land subject to an unregistered right of way where the surface is owned by someone else.
- A manhole or drainage easement outside the boundary.
- Airspace over a neighbouring wall where a gutter or eaves oversail.
Each one either comes out of the red line or brings a notice with it. Deciding which at drawing stage takes ten minutes. Discovering it at week six of an eight week determination period costs a restart.
Correcting a certificate after submission
If you find the error before determination, tell the case officer, submit a corrected certificate, serve or publish whatever notice the correct certificate requires, and accept that the publicity period will restart. Most authorities handle this without drama because the alternative is a decision they cannot defend.
If the permission has already been issued, the position is harder. The permission is not automatically void, but it is vulnerable, and a purchaser's solicitor will find the defect. A fresh application with the correct certificate usually costs less than arguing about it, and where the works have already been built the an appeal statement of case route or a certificate of lawfulness may be in play instead.
Record the certificate decision in the covering letter or the Planning Statement, naming the certificate used and why. It takes two sentences and it shows the officer that the question was considered rather than skipped.
This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it, and take legal advice on ownership questions where title is unclear.
Draft the supporting statements for your application on PlanScope after you have settled the red line, and see which of the report types a scheme needs apply to the site. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
Who counts as an owner on a planning application?
The freehold owner of any part of the application site, or a leaseholder whose lease still has at least seven years to run. Mortgage lenders, licensees, short term tenants and neighbours with rights of way are not owners for this purpose. Agricultural tenants are dealt with by the separate declaration on the same certificate.
Can I use Certificate A if I own the house but not the verge?
No, if the verge is inside your red line. Either exclude the verge from the application site and show it as land in other ownership, or keep it in and serve notice on the highway authority as owner, using Certificate B. A dropped kerb or a new access is the situation where this comes up most often.
What happens if I sign the wrong certificate?
If it is spotted before determination, submit a corrected certificate and serve or publish the notices needed, and expect the publicity period to restart. If a permission has already been granted on a false certificate, it is open to challenge and an owner who was not notified can complain, so the practical fix is often a fresh application.
How long before applying must I serve notice?
Notice on other owners has to be given before the application is made, and the certificate records the date of service. For an unknown owner, a notice in a local newspaper is required and the application cannot be determined until 21 days after publication. Build three weeks into the programme rather than treating it as a same day task.
Do I need to notify a neighbour whose land I am not using?
Not through the ownership certificate. The certificate covers owners of land inside the application site only. Neighbours are consulted by the authority through its own publicity, so a neighbour with a boundary next to the site receives a letter from the council rather than a notice from you.
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.