Find affordable extension builders
- Trusted, recommended Extension Builders
- Prices for extension builders in the UK
- Find a local builder who can convert your loft or build a side return extension at a great price
- Find out how much extension builder jobs cost
| Low | Average | High |
|---|---|---|
| £13 | £34 | £68 |
| Average hourly rate of 9080 extension builders in the UK excluding VAT or callout charge | ||
Extension Builders in the UK. The average hourly rate of the 10 Extension Builders listed is £37. Extension Builder rates vary with location. For example, Image Design & Consultants in Heston charges from £44 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
KDS Building Services
Trusted and professional extension builder in Stoke Gifford. Experienced in all extension buildering work and keeping within budget and on quote. K...
"Underpinning" - NOTTINGHAMSHIRE, job posted 02/10/24
Mjharrison
Mark Harrison
From decorating, flat pacassembly, wet rooms, studwalls, doors frames, skirts,arcs, windows kitchens etc
"Rear Extension - single storey. L shape" - KY2, job posted 01/10/24
TFC Construction
Trusted and professional extension builder in Richmond. Experienced in all extension buildering work and keeping within budget and on quote. TFC Co...
"Two storey extension" - WEST LANCASHIRE, job posted 01/10/24
Hawaii Ltd
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion" - WARRINGTON, job posted 30/09/24
Image Design & Consultants
Image Design & Consultants is a trusted extension builder serving customers in Heston and the surrounding area. Contact us to today to get a compet...
"Garden office" - CORNWALL, job posted 30/09/24
Tota Builders
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
"Loft conversion, 1 bedroom with en suite bathroom, remove chimney breast in the attic, and remove chimney breast in the bedroom." - CROYDON, job posted 29/09/24
Sharp Building Ltd
Sharp Building Ltd is an established and experienced local extension builder in Watford. Please contact us for a free, no obligation quote and comp...
"Dormer loft conversion" - WINNERSH, job posted 29/09/24
RBAM Construction Ltd
Trusted and professional extension builder in Peterborough. Experienced in all extension buildering work and keeping within budget and on quote. RB...
"Two storey extension" - DE24, job posted 29/09/24
Moores Roofing
M Moore
Trusted and professional extension builder in Eye, Peterborough. Experienced in all extension buildering work and keeping within budget and on quot...
"Terraced house. Single storey extension on the rear. We have a side entry brick utility with a brick shed attached to the back we would like to inco6this area into a utility and downstairs toilet/shower area." - BIRMINGHAM, job posted 28/09/24
24 7 BUILDING SOLUTIONS LTD
Sarah Godwin
24 7 BUILDING SOLUTIONS LTD is a trusted extension builder serving customers in Downend and the surrounding area. Contact us to today to get a comp...
"Garage 5 metre by 4.7" - PORTSMO, job posted 28/09/24
from 290 to 300 of 9080
Find out how much extension builder jobs cost
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.




















