Download our guide to extending your home
You don't need building regulations approval for some projects such as loft and garage conversions: see Exempt Buildings and Extensions.
Find out more
- Building control advice: Extensions (LABC Front Door)
- Building regulations approval (GOV.UK)
- Common projects (Planning Portal)
- Guide to renovating your home
Plan and design your extension
Before you begin work on extending your home, get some advice from:
- Citizens Advice: before you get building work done
- Checkatrade.com
- Buy with confidence – trading standards approved traders
- Federation of Master Builders
Apply
Building control applications and fees
Contact us
Building Control
Merton Civic Centre
London Road
Morden
SM4 5DX
Telephone: 020 4605 3145
Lines open 9-12am for booking site visits and 3-5pm for Technical queries
If you urgently need to report a dangerous structure: 020 8274 4901
Or out-of-hours emergency line: 020 8543 9750