New Malden, KT3
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Albdeco Builders & Decorators Ltd is a trusted extension builder serving customers in KT3 and the surrounding area. Contact us to today to get a co...
Tom Flanagan
Very experienced Builder in this area ,Epsom Sutton Raynes pk Wimbledon areas mostly now on recommendation usually also supply Drawings&a Structu...
Need to find an Extension Builder near you for all your extension buildering work?
Leith All Building & Decorating provides a local, truste...
Artin Construction is an established extension buildering business in KT3. We come highly recommended and provide competitive quotes for your work....
Paul Meacher Builders is an established and experienced local extension builder in KT3. Please contact us for a free, no obligation quote and compe...
New Malden, KT3
Trusted and professional extension builder in KT3. Experienced in all extension buildering work and keeping within budget and on quote. Racsel Buil...
Need to find an Extension Builder near you for all your extension buildering work?
Racsel Building Services Ltd provides a local, trusted e...
A H S Construction Design Ltd is an established and experienced local extension builder in KT3. Please contact us for a free, no obligation quote a...
P L CONTRACTORS DESIGN & BUILD is a trusted extension builder serving customers in KT3 and the surrounding area. Contact us to today to get a compe...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in KT3 it ranges from £2,272 (P L CONTRACTORS DESIGN & BUILD based in KT1) to £2,656 (Albdeco Builders & Decorators Ltd based in KT1).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in KT3 by posting a job with HaMuch and we will send it to extension builders in KT3.
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.

Underpin a building - £17,717

Two storey extension - £88,325

Build a timber frame extension - £26,217

Build a swimming pool - £81,217

Single storey extension - £59,336

Side return extension - £43,939

Install an RSJ - £2,417

Outbuilding - £10,217

Build a Mansard loft conversion - £52,217

Loft conversion - £35,783

Build a kitchen extension - £42,217

Hip to gable loft conversion - £42,217

Granny annexe - £87,217

Garden office - £10,217

Convert a Garage - £16,217

Garage - £18,717

Build a flat roof extension - £22,217

Build a dormer loft conversion - £42,217

Concrete foundations - £6,467

Convert a bungalow loft - £29,217

Convert a basement - £39,939