Convert a basement cost in W1J
Mayfair Design
From £41,460
Experienced extension builder ready to quote for your work. Mayfair Design is the best extension builder in W1J. No obligation free quotes and many...
Luxe Refurbs
From £37,770
Luxe Refurbs is an established extension buildering business in W1J. We come highly recommended and provide competitive quotes for your work.
We Love Build - Three Arches
From £37,950
We Love Build - Three Arches is an established extension buildering business in W1J. We come highly recommended and provide competitive quotes for ...
We Love Build
From £42,810
We are a Design and Build Company, based in London.We focus on super prime and luxury residential renovations in and around London and internationa...
The Maybria Group
From £38,670
Trusted and professional extension builder in W1J. Experienced in all extension buildering work and keeping within budget and on quote. The Maybria...
Future Homes Design and Build
From £41,820
Experienced extension builder ready to quote for your work. Future Homes Design and Build is the best extension builder in W1J. No obligation free ...
Elv8 Interiors
From £40,380
Originally established in 1996 ELV8 has set the highest standards within the building industry, achieving success by winning numerous gold awards f...
Pillar Contractors Ltd
From £38,580
Need to find an Extension Builder near you for all your extension buildering work?
Pillar Contractors Ltd provides a local, trusted extensi...
Starfish Properties
From £42,000
Starfish Properties is a trusted extension builder serving customers in W1J and the surrounding area. Contact us to today to get a competitive quot...
London Design And Build
From £17,340
Here at London Design and Build, our team of architects, interior designers, structural engineers and contractors, offer a bespoke, turn-key servic...
Cheapest builders to convert your basement in W1J
Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in W1J by posting a job with HaMuch and we will send it to extension builders in W1J.
"Basement conversion" - LAMBETH, job posted 05/02/25
