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 9082 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 £45. Extension Builder rates vary with location. For example, A South View in Maidenhead charges from £43 per hour.
When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Trusted, recommended Extension Builders
RTC Plumbers
Shaik Jamal
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...
"Looking for price for a dormer for 2 bed terraced house" - M19, job posted 08/04/25
Property Maintenance Solutions
Robert Mitchell
Relax... you have found a reliable extension builder in Tyn-y-gongl. Property Maintenance Solutions is a friendly and reliable company based in Tyn...
"Dormer loft conversion" - LUTON, job posted 08/04/25
The Philog Paving Services
The Philog Paving Services is an established extension buildering business in Rhiwbina. We come highly recommended and provide competitive quotes f...
"Two storey extension" - LEEDS, job posted 08/04/25
Chapman Builders
Experienced extension builder ready to quote for your work. Chapman Builders is the best extension builder in Ely. No obligation free quotes and ma...
"Kitchen extension" - MILTON KEYNES, job posted 08/04/25
Rafix Building
Rafal Szczepanski
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
"Loft conversion" - SHEFFIELD, job posted 06/04/25
Luxuria Property Ltd
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
"Loft conversion" - COVENTRY, job posted 06/04/25
K & J Builders & Decorators
Relax... you have found a reliable extension builder in Bagshot. K & J Builders & Decorators is a friendly and reliable company based in Bagshot wh...
"Underpinning" - ACCRINGTON, job posted 06/04/25
A L King Services
Experienced extension builder ready to quote for your work. A L King Services is the best extension builder in Ascot. No obligation free quotes and...
"Loft conversion" - WEST WICKAM, job posted 06/04/25
ASAP Roofing & Exterior Maintenance
ASAP Roofing & Exterior Maintenance is a trusted extension builder serving customers in Ascot and the surrounding area. Contact us to today to get ...
"Single storey extension" - SOUTHPORT, job posted 05/04/25
A South View
Experienced extension builder ready to quote for your work. A South View is the best extension builder in Maidenhead. No obligation free quotes and...
"Single storey extension" - , job posted 05/04/25
from 210 to 220 of 9082
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.




















