From £2,080
Relax... you have found a reliable extension builder in NP15. A M I Construction is a friendly and reliable company based in NP15 who consider no j...
From £2,072
Need an Extension Builder in NP15? P.D.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £1,400
Very reliable honest and hard working guarantee all work clean and tidy first class work
From £2,496
N J Laity & Son & Grandson's are here to help customers who need an Extension Builder in NP15. We offer a competitive rate to complete all your ext...
From £1,928
Neil Causon & Son is an established and experienced local extension builder in NP15. Please contact us for a free, no obligation quote and competit...
From £2,024
Need an Extension Builder in NP15? Mucha Construcion has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
From £1,984
Experienced extension builder ready to quote for your work. TOR BUILD is the best extension builder in NP15. No obligation free quotes and many hap...
From £2,392
B ROBINSON BUILDING is an established and experienced local extension builder in NP15. Please contact us for a free, no obligation quote and compet...
From £2,328
BM Builders UK are here to help customers who need an Extension Builder in NP15. We offer a competitive rate to complete all your extension builder...
From £1,992
T Porter Buiding is an established and experienced local extension builder in NP15. Please contact us for a free, no obligation quote and competiti...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in NP15 it ranges from £1,400 (A.Gaddarn Builders based in NP11) to £2,496 (N J Laity & Son & Grandson's based in BS10).
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 NP15 by posting a job with HaMuch and we will send it to extension builders in NP15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Pontypool | £30 | £210 |
| Install An RSJ near Cwmbran | £43 | £219 |
| Install An RSJ near Newport | £41 | £233 |
| Install An RSJ near Risca | £32 | £218 |
| Install An RSJ near Ebbw Vale | £30 | £217 |
| Install An RSJ near Tredegar | £30 | £217 |
| Install An RSJ near Caerphilly | £33 | £208 |
| Install An RSJ near Portishead | £33 | £247 |
| Install An RSJ near Bradley Stoke | £34 | £259 |
| Install An RSJ near Clevedon | £32 | £243 |
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 - £17,370

Two storey extension - £87,804

Build a timber frame extension - £25,870

Build a swimming pool - £80,870

Single storey extension - £52,392

Side return extension - £40,033

Install an RSJ - £2,070

Outbuilding - £9,870

Build a Mansard loft conversion - £51,870

Loft conversion - £32,528

Build a kitchen extension - £41,870

Hip to gable loft conversion - £41,870

Granny annexe - £86,870

Garden office - £9,870

Convert a Garage - £15,870

Garage - £18,370

Build a flat roof extension - £21,870

Build a dormer loft conversion - £41,870

Concrete foundations - £6,120

Convert a bungalow loft - £28,870

Convert a basement - £36,033