From £2,144
H VAUGHAN BUILDERS is an established extension buildering business in NP15. We come highly recommended and provide competitive quotes for your work...
From £1,944
OWEN BROTHERS CONSTRUCTION LTD are here to help customers who need an Extension Builder in NP15. We offer a competitive rate to complete all your e...
From £1,768
D BENDON CONSTRUCTION LTD is an established and experienced local extension builder in NP15. Please contact us for a free, no obligation quote and ...
From £2,184
Need to find an Extension Builder near you for all your extension buildering work?
PARTRIDGE - WILSON BUILDERS provides a local, trusted ex...
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 £1,808
Relax... you have found a reliable extension builder in NP15. HEDLYN BUILDING CONTRACTORS is a friendly and reliable company based in NP15 who con...
From £2,016
Eric J Ivins is a trusted extension builder serving customers in NP15 and the surrounding area. Contact us to today to get a competitive quote for ...
From £2,024
LEE BAILEY BUILDING SERVICES are here to help customers who need an Extension Builder in NP15. We offer a competitive rate to complete all your ext...
From £2,064
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in NP15 it ranges from £1,768 (D BENDON CONSTRUCTION LTD based in NP4) to £2,184 (PARTRIDGE - WILSON BUILDERS based in NP44).
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 | £26 | £183 |
| Install An RSJ near Cwmbran | £39 | £190 |
| Install An RSJ near Newport | £37 | £200 |
| Install An RSJ near Risca | £27 | £185 |
| Install An RSJ near Ebbw Vale | £24 | £195 |
| Install An RSJ near Tredegar | £24 | £195 |
| Install An RSJ near Caerphilly | £29 | £181 |
| Install An RSJ near Portishead | £29 | £221 |
| Install An RSJ near Bradley Stoke | £29 | £221 |
| Install An RSJ near Clevedon | £29 | £219 |
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 - £17,292

Two storey extension - £87,688

Build a timber frame extension - £25,792

Build a swimming pool - £80,792

Single storey extension - £50,840

Side return extension - £39,160

Install an RSJ - £1,992

Outbuilding - £9,792

Build a Mansard loft conversion - £51,792

Loft conversion - £31,800

Build a kitchen extension - £41,792

Hip to gable loft conversion - £41,792

Granny annexe - £86,792

Garden office - £9,792

Convert a Garage - £15,792

Garage - £18,292

Build a flat roof extension - £21,792

Build a dormer loft conversion - £41,792

Concrete foundations - £6,042

Convert a bungalow loft - £28,792

Convert a basement - £35,160