J & N Contracts Cambs Ltd is an established and experienced local extension builder in CB23. Please contact us for a free, no obligation quote and ...
Mickey Woolfe
Need to find an Extension Builder near you for all your extension buildering work?
M Woolfe Builders & Carpenters provides a local, trusted...
From £2,472
Trusted and professional extension builder in CB23. Experienced in all extension buildering work and keeping within budget and on quote. IJC Buildi...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CB23 it ranges from £2,408 (M Woolfe Builders & Carpenters based in CB23) to £3,000 (J & N Contracts Cambs Ltd based in CB23).
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 CB23 by posting a job with HaMuch and we will send it to extension builders in CB23.
"Knocking through structural wall. requires RSJ installation. I have structural plans and calculations if that helps" - CB23, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near South Cambridgeshire | £50 | £315 |
| Install An RSJ near Cambridge | £41 | £275 |
| 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 Huntingdonshire | £36 | £290 |
| Install An RSJ near Ely | £40 | £279 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
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 - £17,927

Two storey extension - £88,640

Build a timber frame extension - £26,427

Build a swimming pool - £81,427

Single storey extension - £63,533

Side return extension - £46,300

Install an RSJ - £2,627

Outbuilding - £10,427

Build a Mansard loft conversion - £52,427

Loft conversion - £37,750

Build a kitchen extension - £42,427

Hip to gable loft conversion - £42,427

Granny annexe - £87,427

Garden office - £10,427

Convert a Garage - £16,427

Garage - £18,927

Build a flat roof extension - £22,427

Build a dormer loft conversion - £42,427

Concrete foundations - £6,677

Convert a bungalow loft - £29,427

Convert a basement - £42,300