Already started work? Apply for a Regularisation Certificate

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If you started or completed work without getting building regulations approval you must now apply (there will be a charge).

You can only apply for this certificate for work that has been carried out since 11 November 1985.

You will need to fill in the application form below and submit it with copies of any plans, calculations and specifications that you may have and also any records of the work to date such as photos, delivery notes etc.

The regularisation charge is equivalent to 150% of the net building notice charge.  Please note that no VAT is payable on an unauthorised work/regularisation application.

Following submission of your application, you should contact us to arrange site inspections.  

Please be aware that you may be required to open up or expose certain elements of the work in order that we can assess compliance with the Building Regulations.

Remedial works may be required following our inspection(s).

Once we are satisfied that all of the works which have been applied for satisfy the minimum Building Regulation requirements applicable at the time of the construction, a regularisation certificate will be issued.

For this application, you need to apply online using the Planning portal at the via the link below:

Apply via the Planning portal 

Alternatively use our online application via the link below:

Building Control Service : Contact details

Contacting the building control team

Where available, please provide the following information when contacting us:

- Location of site.
- Contact telephone number.
- Application number.
- The type of inspection required together with preferred date and any detail of booked concrete etc.

For further information, please contact us by:

Building Control Service - Royal Borough of Windsor and Maidenhead
St Ives Road
Maidenhead SL6 1RF
Telephone: 01628 796915