From £2,360
Silverwood Construction (Cambridge) Ltd are here to help customers who need an Extension Builder in Cambridge West. We offer a competitive rate to ...
From £2,352
Relax... you have found a reliable extension builder in Cambridge West. CROWNBUILD is a friendly and reliable company based in Cambridge West who c...
From £2,472
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,272
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,656
MDH Construction is an established and experienced local extension builder in Cambridge West. Please contact us for a free, no obligation quote and...
From £3,560
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in Cambridge West. No obli...
From £2,600
D C Salsbury Builders is an established and experienced local extension builder in Cambridge West. Please contact us for a free, no obligation quot...
From £2,352
Need to find an Extension Builder near you for all your extension buildering work?
JKL Construction & Carpentry Ltd provides a local, trust...
From £2,288
Eric Handyman- builder is an established and experienced local extension builder in Cambridge West. Please contact us for a free, no obligation quo...
From £2,760
Relax... you have found a reliable extension builder in Cambridge West. R G BUILDERS is a friendly and reliable company based in Cambridge West who...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Cambridge West it ranges from £2,272 (ECO DESIGN & BUILD (UK) LTD based in SG8) to £3,560 (ALLIED BUILDING ASSOCIATES LTD based in CB22).
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 Cambridge West by posting a job with HaMuch and we will send it to extension builders in Cambridge West.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Cambridge | £38 | £271 |
| Install An RSJ near South Cambridgeshire | £43 | £305 |
| Install An RSJ near Haverhill | £37 | £260 |
| Install An RSJ near Ely | £40 | £279 |
| Install An RSJ near St Neots | £51 | £318 |
| Install An RSJ near Huntingdon | £38 | £284 |
| Install An RSJ near Biggleswade | £41 | £268 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near East Hertfordshire | £44 | £289 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
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 - £17,867

Two storey extension - £88,551

Build a timber frame extension - £26,367

Build a swimming pool - £81,367

Single storey extension - £62,344

Side return extension - £45,631

Install an RSJ - £2,567

Outbuilding - £10,367

Build a Mansard loft conversion - £52,367

Loft conversion - £37,193

Build a kitchen extension - £42,367

Hip to gable loft conversion - £42,367

Granny annexe - £87,367

Garden office - £10,367

Convert a Garage - £16,367

Garage - £18,867

Build a flat roof extension - £22,367

Build a dormer loft conversion - £42,367

Concrete foundations - £6,617

Convert a bungalow loft - £29,367

Convert a basement - £41,631