From £2,448
J & N Contracts Cambs Ltd is an established and experienced local extension builder in Highfields. Please contact us for a free, no obligation quot...
From £2,368
Based in Cambridgeshire James Burch Roofing specialises in flat roofing in felt and single ply membranes. For the past 10 years we have worked thro...
From £2,472
Highfields, CB23
Trusted and professional extension builder in Highfields. Experienced in all extension buildering work and keeping within budget and on quote. IJC ...
From £2,328
Need an Extension Builder in Highfields? Baufritz (UK) Limited has been helping local clients (20 mile radius) with their extension buildering jobs...
From £2,176
Need an Extension Builder in Highfields? SturdyBuild has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
From £2,432
WESTWICK BUILDERS LIMITED is an established extension buildering business in Highfields. We come highly recommended and provide competitive quotes ...
From £2,608
Need to find an Extension Builder near you for all your extension buildering work?
Louise Swarbrick Design provides a local, trusted extens...
From £2,416
M OLIVER BUILDING is an established and experienced local extension builder in Highfields. Please contact us for a free, no obligation quote and co...
From £2,584
Comprehensive, Intelligent Construction Service offering Domestic and Commercial Buildings, Barn, Basement and Loft Conversions, Renovation & Refur...
From £2,352
Relax... you have found a reliable extension builder in Highfields. CROWNBUILD is a friendly and reliable company based in Highfields who consider ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Highfields it ranges from £2,176 (SturdyBuild based in CB3) to £2,608 (Louise Swarbrick Design based in CB3).
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 Highfields by posting a job with HaMuch and we will send it to extension builders in Highfields.
"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 | £43 | £305 |
| Install An RSJ near Cambridge | £38 | £271 |
| 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 - £17,718

Two storey extension - £88,328

Build a timber frame extension - £26,218

Build a swimming pool - £81,218

Single storey extension - £59,368

Side return extension - £43,957

Install an RSJ - £2,418

Outbuilding - £10,218

Build a Mansard loft conversion - £52,218

Loft conversion - £35,798

Build a kitchen extension - £42,218

Hip to gable loft conversion - £42,218

Granny annexe - £87,218

Garden office - £10,218

Convert a Garage - £16,218

Garage - £18,718

Build a flat roof extension - £22,218

Build a dormer loft conversion - £42,218

Concrete foundations - £6,468

Convert a bungalow loft - £29,218

Convert a basement - £39,957