From £2,288
NEW ENGLAND CONSTRUCTION LTD are here to help customers who need an Extension Builder in BS36. We offer a competitive rate to complete all your ext...
From £2,000
Need an Extension Builder in BS36? SOUTH WEST ELITE BUILDING CONT has been helping local clients (20 mile radius) with their extension buildering j...
From £2,392
Hello, we are small company that we can do all building jobs like roofing, loft conversion,Garage conversion, extension, house renovation, slabs an...
From £2,112
Relax... you have found a reliable extension builder in BS36. MR BUILDING SERVICES is a friendly and reliable company based in BS36 who consider no...
From £2,744
GARY G BOND LIMITED are here to help customers who need an Extension Builder in BS36. We offer a competitive rate to complete all your extension bu...
From £2,720
Need to find an Extension Builder near you for all your extension buildering work?
ST GEORGES HOMES (UK) LTD provides a local, trusted exte...
From £2,192
Relax... you have found a reliable extension builder in BS36. Singh Residentials is a friendly and reliable company based in BS36 who consider no j...
From £2,456
Need to find an Extension Builder near you for all your extension buildering work?
BS Knapp Ltd provides a local, trusted extension builder...
From £2,280
HYATT BUILDING SERVICES are here to help customers who need an Extension Builder in BS36. We offer a competitive rate to complete all your extensio...
From £2,056
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BS36 it ranges from £2,000 (SOUTH WEST ELITE BUILDING CONT based in BS16) to £2,744 (GARY G BOND LIMITED based in BS16).
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 BS36 by posting a job with HaMuch and we will send it to extension builders in BS36.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near South Gloucestershire | £34 | £260 |
| Install An RSJ near Yate | £34 | £263 |
| Install An RSJ near Bradley Stoke | £34 | £259 |
| Install An RSJ near Kingswood | £34 | £257 |
| Install An RSJ near Bristol | £33 | £255 |
| Install An RSJ near Clifton | £33 | £255 |
| Install An RSJ near Keynsham | £33 | £251 |
| Install An RSJ near Portishead | £33 | £247 |
| Install An RSJ near Chippenham | £34 | £258 |
| Install An RSJ near Bath | £32 | £249 |
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 - £17,624

Two storey extension - £88,186

Build a timber frame extension - £26,124

Build a swimming pool - £81,124

Single storey extension - £57,480

Side return extension - £42,895

Install an RSJ - £2,324

Outbuilding - £10,124

Build a Mansard loft conversion - £52,124

Loft conversion - £34,913

Build a kitchen extension - £42,124

Hip to gable loft conversion - £42,124

Granny annexe - £87,124

Garden office - £10,124

Convert a Garage - £16,124

Garage - £18,624

Build a flat roof extension - £22,124

Build a dormer loft conversion - £42,124

Concrete foundations - £6,374

Convert a bungalow loft - £29,124

Convert a basement - £38,895