From £1,616
Trusted and professional extension builder in NP13. Experienced in all extension buildering work and keeping within budget and on quote. M2 Buildin...
From £2,072
Need an Extension Builder in NP13? P.D.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years...
From £1,808
Relax... you have found a reliable extension builder in NP13. HEDLYN BUILDING CONTRACTORS is a friendly and reliable company based in NP13 who con...
From £2,000
Need to find an Extension Builder near you for all your extension buildering work?
A B CONSTRUCTION provides a local, trusted extension bui...
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 £1,816
CHANDER CONSTRUCTION LIMITED is an established and experienced local extension builder in NP13. Please contact us for a free, no obligation quote a...
From £1,848
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,144
Trusted and professional extension builder in NP13. Experienced in all extension buildering work and keeping within budget and on quote. BIs Group ...
From £1,768
D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in NP13. Please contact us for a free, no obligation quote and ...
From £2,000
Need an Extension Builder in NP13? MG3Design has been helping local clients (20 mile radius) with their extension buildering jobs for many years. G...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in NP13 it ranges from £1,616 (M2 Building & Landscaping based in NP13) to £2,144 (BIs Group based in NP12).
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 NP13 by posting a job with HaMuch and we will send it to extension builders in NP13.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Pontypool | £30 | £210 |
| Install An RSJ near Ebbw Vale | £28 | £218 |
| Install An RSJ near Tredegar | £28 | £218 |
| Install An RSJ near Cwmbran | £43 | £219 |
| Install An RSJ near Risca | £32 | £218 |
| Install An RSJ near Merthyr Tydfil | £33 | £220 |
| Install An RSJ near Caerphilly | £33 | £208 |
| Install An RSJ near Newport | £41 | £233 |
| Install An RSJ near Pontypridd | £33 | £211 |
| Install An RSJ near Aberdare | £32 | £212 |
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 - £17,204

Two storey extension - £87,556

Build a timber frame extension - £25,704

Build a swimming pool - £80,704

Single storey extension - £49,080

Side return extension - £38,170

Install an RSJ - £1,904

Outbuilding - £9,704

Build a Mansard loft conversion - £51,704

Loft conversion - £30,975

Build a kitchen extension - £41,704

Hip to gable loft conversion - £41,704

Granny annexe - £86,704

Garden office - £9,704

Convert a Garage - £15,704

Garage - £18,204

Build a flat roof extension - £21,704

Build a dormer loft conversion - £41,704

Concrete foundations - £5,954

Convert a bungalow loft - £28,704

Convert a basement - £34,170