From £2,336
Trusted and professional extension builder in SG19. Experienced in all extension buildering work and keeping within budget and on quote. J. WATSON ...
From £2,368
Relax... you have found a reliable extension builder in SG19. Imogen Jack is a friendly and reliable company based in SG19 who consider no job as t...
From £2,464
Relax... you have found a reliable extension builder in SG19. Applewood Design and Build Ltd is a friendly and reliable company based in SG19 who c...
From £2,344
A.S. OHM Electrics Ltd is a trusted extension builder serving customers in SG19 and the surrounding area. Contact us to today to get a competitive ...
From £2,392
TCL BUILDING SOLUTIONS LTD are here to help customers who need an Extension Builder in SG19. We offer a competitive rate to complete all your exten...
From £2,648
JP Building Limited are here to help customers who need an Extension Builder in SG19. We offer a competitive rate to complete all your extension bu...
From £2,416
M OLIVER BUILDING is an established and experienced local extension builder in SG19. Please contact us for a free, no obligation quote and competit...
From £2,048
Need an Extension Builder in SG19? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £2,320
For more than 10 years, North Hertfordshire Construction LTD have been the name you can trust when it comes to building and development! We are kno...
From £2,512
Experienced extension builder ready to quote for your work. Bricklayers is the best extension builder in SG19. No obligation free quotes and many h...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SG19 it ranges from £2,048 (R&J Building Services Ltd based in SG17) to £2,648 (JP Building Limited based in PE19).
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 SG19 by posting a job with HaMuch and we will send it to extension builders in SG19.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Biggleswade | £35 | £230 |
| Install An RSJ near St Neots | £42 | £256 |
| Install An RSJ near Bedford | £38 | £233 |
| Install An RSJ near South Bedfordshire | £38 | £233 |
| Install An RSJ near Kempston | £37 | £230 |
| Install An RSJ near Letchworth | £37 | £239 |
| Install An RSJ near South Cambridgeshire | £37 | £258 |
| Install An RSJ near North Hertfordshire | £37 | £239 |
| Install An RSJ near Ampthill | £31 | £214 |
| Install An RSJ near Mid Bedfordshire | £34 | £225 |
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 - £17,685

Two storey extension - £88,277

Build a timber frame extension - £26,185

Build a swimming pool - £81,185

Single storey extension - £58,696

Side return extension - £43,579

Install an RSJ - £2,385

Outbuilding - £10,185

Build a Mansard loft conversion - £52,185

Loft conversion - £35,483

Build a kitchen extension - £42,185

Hip to gable loft conversion - £42,185

Granny annexe - £87,185

Garden office - £10,185

Convert a Garage - £16,185

Garage - £18,685

Build a flat roof extension - £22,185

Build a dormer loft conversion - £42,185

Concrete foundations - £6,435

Convert a bungalow loft - £29,185

Convert a basement - £39,579