Barlam Drylining Ltd are here to help customers who need an Extension Builder in Cyfarthfa. We offer a competitive rate to complete all your extens...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,728
Need an Extension Builder in Cyfarthfa? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering j...
From £2,008
Dare Fitness is an established extension buildering business in Cyfarthfa. We come highly recommended and provide competitive quotes for your work....
From £1,776
L E JONES BUILDER is an established extension buildering business in Cyfarthfa. We come highly recommended and provide competitive quotes for your ...
From £2,000
Need an Extension Builder in Cyfarthfa? MG3Design has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Cyfarthfa it ranges from £1,728 (A POWELL CONSTRUCTION LTD based in CF44) to £2,096 (Barlam Drylining Ltd based in CF45).
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 Cyfarthfa by posting a job with HaMuch and we will send it to extension builders in Cyfarthfa.
"RSJ installation" - MERTHYR TYDFIL, job posted 11/12/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Merthyr Tydfil | £33 | £220 |
| Install An RSJ near Aberdare | £32 | £212 |
| Install An RSJ near Tredegar | £30 | £217 |
| Install An RSJ near Rhondda, Cynon, Taff | £31 | £209 |
| Install An RSJ near Ebbw Vale | £30 | £217 |
| Install An RSJ near Rhondda | £31 | £206 |
| Install An RSJ near Pontypridd | £33 | £211 |
| Install An RSJ near Church Village | £34 | £214 |
| Install An RSJ near Caerphilly | £33 | £208 |
| Install An RSJ near Pontypool | £30 | £210 |
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 - £17,219

Two storey extension - £87,578

Build a timber frame extension - £25,719

Build a swimming pool - £80,719

Single storey extension - £49,373

Side return extension - £38,335

Install an RSJ - £1,919

Outbuilding - £9,719

Build a Mansard loft conversion - £51,719

Loft conversion - £31,113

Build a kitchen extension - £41,719

Hip to gable loft conversion - £41,719

Granny annexe - £86,719

Garden office - £9,719

Convert a Garage - £15,719

Garage - £18,219

Build a flat roof extension - £21,719

Build a dormer loft conversion - £41,719

Concrete foundations - £5,969

Convert a bungalow loft - £28,719

Convert a basement - £34,335