From £2,048
Need an Extension Builder in SG17? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £2,560
Experienced extension builder ready to quote for your work. Specialist Building Refurbishm is the best extension builder in SG17. No obligation fre...
From £2,528
Our building services company David Douglas Developments has over 30 years’ experience, and built an established reputation of providing customer...
From £2,392
TCL BUILDING SOLUTIONS LTD are here to help customers who need an Extension Builder in SG17. We offer a competitive rate to complete all your exten...
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 £2,752
Blue Conker are dedicated to creating spaces for you to enjoy living. From the planning stages through to the finishing touches, our team of profes...
From £2,488
Realise Your Luxury Dream Home With The Design And Build Partner You Can Trust.At MG Design & Build we have over 25 years of experience in the cons...
From £2,768
We strive for quality for our clients. With over 37 years experience in the building industry we can offer a full service for our clients including...
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 SG17. 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 SG17 it ranges from £2,048 (R&J Building Services Ltd based in SG17) to £2,768 (O & E Developments Ld based in MK45).
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 SG17 by posting a job with HaMuch and we will send it to extension builders in SG17.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Biggleswade | £41 | £268 |
| Install An RSJ near Letchworth | £44 | £283 |
| Install An RSJ near Mid Bedfordshire | £42 | £276 |
| Install An RSJ near Ampthill | £38 | £258 |
| Install An RSJ near North Hertfordshire | £44 | £283 |
| Install An RSJ near Hitchin | £43 | £283 |
| Install An RSJ near Kempston | £44 | £273 |
| Install An RSJ near South Bedfordshire | £45 | £278 |
| Install An RSJ near Bedford | £45 | £278 |
| Install An RSJ near Stevenage | £44 | £282 |
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 - £17,784

Two storey extension - £88,426

Build a timber frame extension - £26,284

Build a swimming pool - £81,284

Single storey extension - £60,680

Side return extension - £44,695

Install an RSJ - £2,484

Outbuilding - £10,284

Build a Mansard loft conversion - £52,284

Loft conversion - £36,413

Build a kitchen extension - £42,284

Hip to gable loft conversion - £42,284

Granny annexe - £87,284

Garden office - £10,284

Convert a Garage - £16,284

Garage - £18,784

Build a flat roof extension - £22,284

Build a dormer loft conversion - £42,284

Concrete foundations - £6,534

Convert a bungalow loft - £29,284

Convert a basement - £40,695