Need an Extension Builder in Biggleswade? WILLMOTT DIXON CONSTRUCTION LI has been helping local clients (20 mile radius) with their extension build...
Need an Extension Builder in Biggleswade? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering...
Need an Extension Builder in Biggleswade? M SPINDLER CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension builderi...
Biggleswade, SG18
TCL BUILDING SOLUTIONS LTD are here to help customers who need an Extension Builder in Biggleswade. We offer a competitive rate to complete all you...
From £2,320
James Hogbourne
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 £2,560
Experienced extension builder ready to quote for your work. Specialist Building Refurbishm is the best extension builder in Biggleswade. No obligat...
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 £2,528
Our building services company David Douglas Developments has over 30 years’ experience, and built an established reputation of providing customer...
From £2,512
Experienced extension builder ready to quote for your work. Bricklayers is the best extension builder in Biggleswade. No obligation free quotes and...
From £2,368
Relax... you have found a reliable extension builder in Biggleswade. Imogen Jack is a friendly and reliable company based in Biggleswade who consid...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Biggleswade it ranges from £2,048 (R&J Building Services Ltd based in SG17) to £2,688 (M SPINDLER CONSTRUCTION LTD based in SG6).
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 Biggleswade by posting a job with HaMuch and we will send it to extension builders in Biggleswade.
| 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 North Hertfordshire | £44 | £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 Mid Bedfordshire | £42 | £276 |
| Install An RSJ near Ampthill | £38 | £258 |
| Install An RSJ near St Neots | £51 | £318 |
| Install An RSJ near Hitchin | £43 | £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 - £17,730

Two storey extension - £88,344

Build a timber frame extension - £26,230

Build a swimming pool - £81,230

Single storey extension - £59,592

Side return extension - £44,083

Install an RSJ - £2,430

Outbuilding - £10,230

Build a Mansard loft conversion - £52,230

Loft conversion - £35,903

Build a kitchen extension - £42,230

Hip to gable loft conversion - £42,230

Granny annexe - £87,230

Garden office - £10,230

Convert a Garage - £16,230

Garage - £18,730

Build a flat roof extension - £22,230

Build a dormer loft conversion - £42,230

Concrete foundations - £6,480

Convert a bungalow loft - £29,230

Convert a basement - £40,083