Barlam Drylining Ltd are here to help customers who need an Extension Builder in Aberdare. We offer a competitive rate to complete all your extensi...
G Wager Building Maintenance is a trusted extension builder serving customers in Aberdare and the surrounding area. Contact us to today to get a co...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,696
Trusted and professional extension builder in Aberdare. Experienced in all extension buildering work and keeping within budget and on quote. RJ CON...
From £1,728
Aberdare, CF44
Need an Extension Builder in Aberdare? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jo...
From £2,008
Dare Fitness is an established extension buildering business in Aberdare. 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 Aberdare. We come highly recommended and provide competitive quotes for your w...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Aberdare it ranges from £1,696 (RJ CONSTRUCTION based in CF40) 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 Aberdare by posting a job with HaMuch and we will send it to extension builders in Aberdare.
"RSJ installation" - MERTHYR TYDFIL, job posted 11/12/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Aberdare | £32 | £212 |
| Install An RSJ near Merthyr Tydfil | £33 | £220 |
| Install An RSJ near Rhondda, Cynon, Taff | £31 | £209 |
| Install An RSJ near Rhondda | £31 | £206 |
| Install An RSJ near Tredegar | £30 | £217 |
| Install An RSJ near Pontypridd | £33 | £211 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Neath Port Talbot | £31 | £224 |
| Install An RSJ near Church Village | £34 | £214 |
| Install An RSJ near Ebbw Vale | £30 | £217 |
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 - £17,175

Two storey extension - £87,513

Build a timber frame extension - £25,675

Build a swimming pool - £80,675

Single storey extension - £48,509

Side return extension - £37,849

Install an RSJ - £1,875

Outbuilding - £9,675

Build a Mansard loft conversion - £51,675

Loft conversion - £30,707

Build a kitchen extension - £41,675

Hip to gable loft conversion - £41,675

Granny annexe - £86,675

Garden office - £9,675

Convert a Garage - £15,675

Garage - £18,175

Build a flat roof extension - £21,675

Build a dormer loft conversion - £41,675

Concrete foundations - £5,925

Convert a bungalow loft - £28,675

Convert a basement - £33,849