From £2,176
Trusted and professional extension builder in SA10. Experienced in all extension buildering work and keeping within budget and on quote. HALL & HAR...
From £1,960
Marin Hughes General Builders is a trusted extension builder serving customers in SA10 and the surrounding area. Contact us to today to get a compe...
From £2,136
A Room at the Top are here to help customers who need an Extension Builder in SA10. We offer a competitive rate to complete all your extension buil...
From £1,752
Need an Extension Builder in SA10? Calon Construction Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for ...
From £1,832
Karina Lane Construction Ltd are here to help customers who need an Extension Builder in SA10. We offer a competitive rate to complete all your ext...
From £2,024
Evans Home Improvements are here to help customers who need an Extension Builder in SA10. We offer a competitive rate to complete all your extensio...
From £2,032
Need an Extension Builder in SA10? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £2,048
SS BUILDER are here to help customers who need an Extension Builder in SA10. We offer a competitive rate to complete all your extension buildering ...
From £2,016
Dale Hopkins is an established and experienced local extension builder in SA10. Please contact us for a free, no obligation quote and competitive r...
From £1,976
KAW Developments is a trusted extension builder serving customers in SA10 and the surrounding area. Contact us to today to get a competitive quote ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SA10 it ranges from £1,752 (Calon Construction Ltd based in SA7) to £2,176 (HALL & HARRIS CONSTRUCTION based in SA11).
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 SA10 by posting a job with HaMuch and we will send it to extension builders in SA10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Neath | £30 | £225 |
| Install An RSJ near Neath Port Talbot | £31 | £224 |
| Install An RSJ near Port Talbot | £31 | £227 |
| Install An RSJ near Swansea | £29 | £230 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Gorseinon | £29 | £228 |
| Install An RSJ near Pyle | £34 | £262 |
| Install An RSJ near Porthcawl | £33 | £252 |
| Install An RSJ near Aberdare | £32 | £212 |
| Install An RSJ near Llanelli | £29 | £231 |
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 - £17,295

Two storey extension - £87,693

Build a timber frame extension - £25,795

Build a swimming pool - £80,795

Single storey extension - £50,904

Side return extension - £39,196

Install an RSJ - £1,995

Outbuilding - £9,795

Build a Mansard loft conversion - £51,795

Loft conversion - £31,830

Build a kitchen extension - £41,795

Hip to gable loft conversion - £41,795

Granny annexe - £86,795

Garden office - £9,795

Convert a Garage - £15,795

Garage - £18,295

Build a flat roof extension - £21,795

Build a dormer loft conversion - £41,795

Concrete foundations - £6,045

Convert a bungalow loft - £28,795

Convert a basement - £35,196