Trusted and professional extension builder in SW19. Experienced in all extension buildering work and keeping within budget and on quote. Sonik Buil...
Renaissance Timothy Brewer Ltd is an established extension buildering business in SW19. We come highly recommended and provide competitive quotes f...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
London, SW19
At You Nailed It Ltd we have been fitting bespoke bathrooms since 2008.It is a well-known fact that bathrooms sell houses. They also add a ...
Tom Flanagan
Very experienced Builder in this area ,Epsom Sutton Raynes pk Wimbledon areas mostly now on recommendation usually also supply Drawings&a Structu...
Experienced extension builder ready to quote for your work. CW BUILDING SERVICES is the best extension builder in SW19. No obligation free quotes a...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Wimbledon, SW19
Trusted and professional extension builder in SW19. Experienced in all extension buildering work and keeping within budget and on quote. J & D Cons...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SW19 it ranges from £2,264 (You Nailed It Ltd based in SW19) to £2,616 (ACE BUILDING CONTRACTORS AND D based in SW19).
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 SW19 by posting a job with HaMuch and we will send it to extension builders in SW19.
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| Install An RSJ in Wimbledon |
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| Install An RSJ in Merton |
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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 - £17,692

Two storey extension - £88,288

Build a timber frame extension - £26,192

Build a swimming pool - £81,192

Single storey extension - £58,840

Side return extension - £43,660

Install an RSJ - £2,392

Outbuilding - £10,192

Build a Mansard loft conversion - £52,192

Loft conversion - £35,550

Build a kitchen extension - £42,192

Hip to gable loft conversion - £42,192

Granny annexe - £87,192

Garden office - £10,192

Convert a Garage - £16,192

Garage - £18,692

Build a flat roof extension - £22,192

Build a dormer loft conversion - £42,192

Concrete foundations - £6,442

Convert a bungalow loft - £29,192

Convert a basement - £39,660