From £2,384
Experienced extension builder ready to quote for your work. DIAL 1ST CONSTRUCTION LTD is the best extension builder in Bisley. No obligation free q...
From £2,512
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,360
Homeowners look no further if you want a qualified extension builder to work in your home. LCD Pixel Construction Ltd are tidy and neat, providing ...
From £2,528
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,480
Member since August 2026
Relax... you have found a reliable extension builder in Bisley. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Bisley wh...
From £2,496
Pinnacle Property Services is a trusted extension builder serving customers in Bisley and the surrounding area. Contact us to today to get a compet...
From £2,152
Global Building & Designs Ltd is an established and experienced local extension builder in Bisley. Please contact us for a free, no obligation quot...
From £2,504
JD Construction is an established and experienced local extension builder in Bisley. Please contact us for a free, no obligation quote and competit...
From £2,568
Relax... you have found a reliable extension builder in Bisley. BUILDING SPACE UK LTD is a friendly and reliable company based in Bisley who consid...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Bisley it ranges from £2,152 (Global Building & Designs Ltd based in W7) to £2,600 (WINDOW WIZE based in Gu47).
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 Bisley by posting a job with HaMuch and we will send it to extension builders in Bisley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Woking | £43 | £277 |
| Install An RSJ near Camberley | £41 | £283 |
| Install An RSJ near Ascot | £41 | £276 |
| Install An RSJ near Ash Vale | £41 | £277 |
| Install An RSJ near New Haw | £43 | £273 |
| Install An RSJ near Farnborough | £41 | £273 |
| Install An RSJ near Guildford | £53 | £298 |
| Install An RSJ near Sandhurst | £41 | £283 |
| Install An RSJ near Egham | £42 | £266 |
| Install An RSJ near Bracknell | £41 | £286 |
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 - £17,758

Two storey extension - £88,388

Build a timber frame extension - £26,258

Build a swimming pool - £81,258

Single storey extension - £60,168

Side return extension - £44,407

Install an RSJ - £2,458

Outbuilding - £10,258

Build a Mansard loft conversion - £52,258

Loft conversion - £36,173

Build a kitchen extension - £42,258

Hip to gable loft conversion - £42,258

Granny annexe - £87,258

Garden office - £10,258

Convert a Garage - £16,258

Garage - £18,758

Build a flat roof extension - £22,258

Build a dormer loft conversion - £42,258

Concrete foundations - £6,508

Convert a bungalow loft - £29,258

Convert a basement - £40,407