Apply for a regularisation certificate

What is a regularisation certificate? 

If you, or the previous owners, carried out building work without applying for building control approval or if you decide to sell your property, you may want to apply for retrospective acceptance of the work in the form of a regularisation certificate. 

When work needs to be 'regularised', you’re responsible for providing us with as much information as possible. This helps determine whether the works undertaken complies with the relevant regulations. 

You don't have to apply, but if you do and we can issue a regularisation certificate, this demonstrates that the work complies with the building regulations. 

You can apply for a regularisation certificate if the work was carried out without building control approval and was completed after 1985. If the work started before this date, we cannot help. Instead, you can seek the guidance and opinion of a chartered building surveyor.

What you’ll need before you apply

When you submit your application, you should provide as much information as possible to show the work complies with building regulations.

This could include:

• site plans
• calculations
• invoices
• photographs

You can still apply if you don’t have any information about the work. 

How to apply for a regularisation certificate

Our online form is the quickest way to process your application. You can apply for and pay for a regularisation certificate online.

Start a regularisation certificate application

Alternatively, you can download a building control application form (PDF).

Return your completed form to building.control@kingston.gov.uk, attaching copies of relevant documents. But this process can take longer. 

Regularisation certificate application costs

You can find out how much it will cost by using our cost calculator when you start your application or find fees on our building control charges page

After you’ve applied

Once you’ve applied for your regularisation certificate, you’ll receive an email and a reference number confirming your application.

Before a certificate can be issued, you must book a site inspection so we can inspect the work.

Where we cannot ascertain compliance with all areas of the work, we are authorised to request to uncover particular works, whether complete or incomplete, for our inspection. Where possible, the Royal Borough of Kingston upon Thames' Building Control service will work with you and any appointed third party you’ve selected.

The Royal Borough of Kingston upon Thames' Building Control service is legally bound to ensure that all works associated with the project meet the requirements of the Building Regulations. We’ll use the information to determine whether overall compliance has been achieved. Where we have concerns about non-compliance, we’ll tell you. You’ll be responsible for justifying or correcting the works and allowing site inspection.

If you decide not to proceed, you’ll not receive a refund of any part of the charge you have paid.

How to make a payment 

You can make payment once you've completed our online building control application. If you’re submitting your application by post, you can call 020 8547 5000 to pay your fee or pay online.