From £2,024
Cwmbran, NP44
LEE BAILEY BUILDING SERVICES are here to help customers who need an Extension Builder in Cwmbran. We offer a competitive rate to complete all your ...
From £2,064
, NP44
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,760
Cwmbran, NP44
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,184
Cwmbran, NP44
Need to find an Extension Builder near you for all your extension buildering work?
PARTRIDGE - WILSON BUILDERS provides a local, trusted ex...
From £1,768
D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in Cwmbran. Please contact us for a free, no obligation quote a...
From £2,128
Experienced extension builder ready to quote for your work. DAYS BUILDING SERVICES LTD is the best extension builder in Cwmbran. No obligation free...
From £1,400
Very reliable honest and hard working guarantee all work clean and tidy first class work
From £1,968
Our building services company JSP Carpentry & Building Services has 15 years of experience in the industry. Since then, we have been helping custom...
From £2,200
Trusted and professional extension builder in Cwmbran. Experienced in all extension buildering work and keeping within budget and on quote. A P FOR...
From £2,256
Matthew O'Brien is an established and experienced local extension builder in Cwmbran. Please contact us for a free, no obligation quote and competi...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Cwmbran it ranges from £1,400 (A.Gaddarn Builders based in NP11) to £2,256 (Matthew O'Brien based in NP19).
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 Cwmbran by posting a job with HaMuch and we will send it to extension builders in Cwmbran.
"RSJ installation" - NEWPORT, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Cwmbran | £43 | £219 |
| Install An RSJ near Risca | £32 | £218 |
| Install An RSJ near Newport | £41 | £233 |
| Install An RSJ near Pontypool | £30 | £210 |
| Install An RSJ near Caerphilly | £33 | £208 |
| Install An RSJ near Ebbw Vale | £30 | £217 |
| Install An RSJ near Tredegar | £30 | £217 |
| Install An RSJ near Cardiff | £34 | £219 |
| Install An RSJ near Pontypridd | £33 | £211 |
| Install An RSJ near Church Village | £34 | £214 |
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 - £17,275

Two storey extension - £87,663

Build a timber frame extension - £25,775

Build a swimming pool - £80,775

Single storey extension - £50,504

Side return extension - £38,971

Install an RSJ - £1,975

Outbuilding - £9,775

Build a Mansard loft conversion - £51,775

Loft conversion - £31,643

Build a kitchen extension - £41,775

Hip to gable loft conversion - £41,775

Granny annexe - £86,775

Garden office - £9,775

Convert a Garage - £15,775

Garage - £18,275

Build a flat roof extension - £21,775

Build a dormer loft conversion - £41,775

Concrete foundations - £6,025

Convert a bungalow loft - £28,775

Convert a basement - £34,971