Apply for building regulation approval

Guide to Extending Your Home

This guide will take you through the building control process and aims to show you how your project may be affected by Building Regulations. It contains advice on typical building projects such as extensions, garage conversions, loft conversions and cellar conversions.

Click here to view the guide >>

To apply for building regulations approval you will need to complete an application form and pay a fee. The fee depends on the type of application submitted, and the type and cost of the work.

The law requires that this should be made no later than two working days before work starts on site; however we advise you to apply early so that we have more time forewarn you of any potential difficulties.

Apply online

You can submit an application electronically via the Planning Portal. This service is free and available 24 hours a day.

You can also submit your application by email to buildingcontrol@caerphilly.gov.uk

You can also submit any other application enquiry through www.labcportal.co.uk or buildingcontrol@caerphilly.gov.uk.

Alternatively, downloadable application forms and fees are available below.

Downloadable forms

Building Regulation form (PDF) - download, fill in and return via email 

Building Regulation form (PDF) - download, print and return to the address on the form.

Replacement of roof lights, windows and external doors application form (PDF 33kb)

Completed forms should be sent (with payment and required documentation) to Building Control

Fees and charges

Table A and A1 - Charges for small domestic buildings and conversions to dwellings (PDF 209kb)

Table B - Domestic extensions to a single building (PDF 26kb)

Table C – Charges for certain domestic alterations to a single building (PDF 22kb)

Table D – Charges for other non-domestic works – extensions and new build (PDF 47kb)

Table E – Charges for all other non-domestic work – alterations (PDF 34kb)

Table F – Work other than work to which tables A, A1, B, C, D and E apply (PDF 34kb)

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