Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
Embury Building Services Ltd provides a local, trusted e...
Richmond, TW10
Trusted and professional extension builder in TW10. Experienced in all extension buildering work and keeping within budget and on quote. TFC Constr...
From £2,104
Masterbuild & Design Ltd is an established and experienced local extension builder in TW10. Please contact us for a free, no obligation quote and c...
From £2,296
Richmond, TW10
Need an Extension Builder in TW10? Edmond & Tann Builders has been helping local clients (10 mile radius) with their extension buildering jobs for ...
From £2,344
Need to find an Extension Builder near you for all your extension buildering work?
Sterling Building Contracts Li provides a local, trusted...
From £2,248
A Twickenham Roofing Service is an established extension buildering business in TW10. We come highly recommended and provide competitive quotes for...
From £2,688
Evolution Design is an internationally recognised Design & Build Business with more than 20 years of experience, completing Residential and Commerc...
From £2,416
At Kapeti Ltd we create well planned interior architecture and interior design projects. We offer turnkey solutions in residential and commercial s...
From £2,264
Need an Extension Builder in TW10? Sherif Mourad has been helping local clients (10 mile radius) with their extension buildering jobs for many year...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in TW10 it ranges from £2,096 (Tota Builders based in TW2) to £2,688 (Evolution Design and Construction based in TW10).
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 TW10 by posting a job with HaMuch and we will send it to extension builders in TW10.
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 - £17,624

Two storey extension - £88,186

Build a timber frame extension - £26,124

Build a swimming pool - £81,124

Single storey extension - £57,480

Side return extension - £42,895

Install an RSJ - £2,324

Outbuilding - £10,124

Build a Mansard loft conversion - £52,124

Loft conversion - £34,913

Build a kitchen extension - £42,124

Hip to gable loft conversion - £42,124

Granny annexe - £87,124

Garden office - £10,124

Convert a Garage - £16,124

Garage - £18,624

Build a flat roof extension - £22,124

Build a dormer loft conversion - £42,124

Concrete foundations - £6,374

Convert a bungalow loft - £29,124

Convert a basement - £38,895