From £1,952
Experienced extension builder ready to quote for your work. Kingsley Developments is the best extension builder in NP20. No obligation free quotes ...
From £2,120
Kingsley Developments is an established and experienced local extension builder in NP20. Please contact us for a free, no obligation quote and comp...
From £1,960
Sharif General Builder is an established and experienced local extension builder in NP20. Please contact us for a free, no obligation quote and com...
From £1,912
PMW Property Services Ltd is an established and experienced local extension builder in NP20. Please contact us for a free, no obligation quote and ...
From £2,200
Trusted and professional extension builder in NP20. Experienced in all extension buildering work and keeping within budget and on quote. A P FORD B...
From £2,256
Matthew O'Brien is an established and experienced local extension builder in NP20. Please contact us for a free, no obligation quote and competitiv...
From £2,112
Relax... you have found a reliable extension builder in NP20. Ace Paving is a friendly and reliable company based in NP20 who consider no job as to...
From £2,128
Experienced extension builder ready to quote for your work. DAYS BUILDING SERVICES LTD is the best extension builder in NP20. No obligation free qu...
From £2,192
Relax... you have found a reliable extension builder in NP20. RKD Maintenance & Construction is a friendly and reliable company based in NP20 who c...
From £1,992
T Porter Buiding is an established and experienced local extension builder in NP20. 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 NP20 it ranges from £1,912 (PMW Property Services Ltd based in NP20) 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 NP20 by posting a job with HaMuch and we will send it to extension builders in NP20.
"RSJ installation" - NEWPORT
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Newport | £37 | £200 |
| Install An RSJ near Cwmbran | £39 | £190 |
| Install An RSJ near Risca | £27 | £185 |
| Install An RSJ near Pontypool | £26 | £183 |
| Install An RSJ near Caerphilly | £29 | £181 |
| Install An RSJ near Cardiff | £30 | £190 |
| Install An RSJ near Clevedon | £29 | £219 |
| Install An RSJ near Portishead | £29 | £221 |
| Install An RSJ near Penarth | £31 | £189 |
| Install An RSJ near Church Village | £30 | £188 |
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 - £17,382

Two storey extension - £87,824

Build a timber frame extension - £25,882

Build a swimming pool - £80,882

Single storey extension - £52,648

Side return extension - £40,177

Install an RSJ - £2,082

Outbuilding - £9,882

Build a Mansard loft conversion - £51,882

Loft conversion - £32,648

Build a kitchen extension - £41,882

Hip to gable loft conversion - £41,882

Granny annexe - £86,882

Garden office - £9,882

Convert a Garage - £15,882

Garage - £18,382

Build a flat roof extension - £21,882

Build a dormer loft conversion - £41,882

Concrete foundations - £6,132

Convert a bungalow loft - £28,882

Convert a basement - £36,177