Extension builders in Bristol
Firms in Bristol who list single and double storey, side return and wraparound extensions, ranked by verified customer reviews and then distance. Nobody pays to move up this list, and a message goes to the one builder you choose.
No extension builders listed in Bristol yet
We are adding checked builders town by town. Tell us about the job and we will point you to someone, or look at the other builders in Bristol.
Before you contact a builder
Our guide to extension builders covers what the job involves, the approvals it needs and what to check before you hire. For prices, read House extension cost in the UK (2026 prices). Local planning, building control and housing notes are on the Bristol page.