From £2,264
Spaces & Places have a wealth of experience in offering a wide range of building services to home and business owners using a team of reliable ...
From £2,552
SFC CONSTRUCTION is an established and experienced local extension builder in SL6. Please contact us for a free, no obligation quote and competitiv...
From £2,288
B.A Ruffle Building Contractor is an established extension buildering business in SL6. We come highly recommended and provide competitive quotes fo...
From £2,504
Our maidenhead based Carpentry, Joinery & Building company can offer a complete single room or property solution to you. Working with han...
From £2,472
GARETH EGARR BUILDERS LIMITED is an established and experienced local extension builder in SL6. Please contact us for a free, no obligation quote a...
From £2,624
Fresh Approach Design and Build Ltd is a trusted extension builder serving customers in SL6 and the surrounding area. Contact us to today to get a ...
From £2,352
We are a Design and Build contractor based in Maidenhead Berkshire. Clarity during the build process is key, so here at Fresh Approach we make sure...
From £2,544
Need an Extension Builder in SL6? The Student Nest has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £2,592
The Student Nest provides unique student houses in the best locations in your university city or town. Get info, tips & news on the best places to ...
From £2,112
Trusted and professional extension builder in SL6. Experienced in all extension buildering work and keeping within budget and on quote. TENNORCREST...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SL6 it ranges from £2,112 (TENNORCREST CONSTRUCTION based in SL6) to £2,624 (Fresh Approach Design and Build Ltd based in SL6).
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 SL6 by posting a job with HaMuch and we will send it to extension builders in SL6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Maidenhead | £41 | £273 |
| Install An RSJ near Windsor | £41 | £271 |
| Install An RSJ near Windsor & Maidenhead | £42 | £272 |
| Install An RSJ near Slough | £42 | £272 |
| Install An RSJ near High Wycombe | £39 | £272 |
| Install An RSJ near Bracknell Forest | £41 | £287 |
| Install An RSJ near Bracknell | £41 | £286 |
| Install An RSJ near Ascot | £41 | £276 |
| Install An RSJ near Wycombe | £39 | £271 |
| Install An RSJ near Gerrards Cross | £43 | £282 |
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 - £17,730

Two storey extension - £88,346

Build a timber frame extension - £26,230

Build a swimming pool - £81,230

Single storey extension - £59,608

Side return extension - £44,092

Install an RSJ - £2,430

Outbuilding - £10,230

Build a Mansard loft conversion - £52,230

Loft conversion - £35,910

Build a kitchen extension - £42,230

Hip to gable loft conversion - £42,230

Granny annexe - £87,230

Garden office - £10,230

Convert a Garage - £16,230

Garage - £18,730

Build a flat roof extension - £22,230

Build a dormer loft conversion - £42,230

Concrete foundations - £6,480

Convert a bungalow loft - £29,230

Convert a basement - £40,092