From £1,696
Tonypandy, CF40
Trusted and professional extension builder in Tonypandy. Experienced in all extension buildering work and keeping within budget and on quote. RJ CO...
From £1,816
Excel Home Design Ltd is an established extension buildering business in Tonypandy. We come highly recommended and provide competitive quotes for y...
From £1,776
L E JONES BUILDER is an established extension buildering business in Tonypandy. We come highly recommended and provide competitive quotes for your ...
From £1,992
We are a small family run business, established over 35 years ago, specialising in Hard Landscaping (Patios) and Block Paving.We a...
From £1,728
Need an Extension Builder in Tonypandy? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering j...
From £1,752
P ALLEN BUILDERS is an established and experienced local extension builder in Tonypandy. Please contact us for a free, no obligation quote and comp...
From £2,096
Barlam Drylining Ltd are here to help customers who need an Extension Builder in Tonypandy. We offer a competitive rate to complete all your extens...
From £1,904
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,024
Need an Extension Builder in Tonypandy? FORMWORK 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 Tonypandy. We come highly recommended and provide competitive quotes for your work....

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Tonypandy 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 Tonypandy by posting a job with HaMuch and we will send it to extension builders in Tonypandy.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rhondda | £31 | £206 |
| Install An RSJ near Rhondda, Cynon, Taff | £31 | £209 |
| Install An RSJ near Pontypridd | £33 | £211 |
| Install An RSJ near Aberdare | £32 | £212 |
| Install An RSJ near Church Village | £34 | £214 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Merthyr Tydfil | £33 | £220 |
| Install An RSJ near Bridgend | £32 | £200 |
| Install An RSJ near Caerphilly | £33 | £208 |
| Install An RSJ near Pyle | £34 | £262 |
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 - £17,179

Two storey extension - £87,519

Build a timber frame extension - £25,679

Build a swimming pool - £80,679

Single storey extension - £48,584

Side return extension - £37,891

Install an RSJ - £1,879

Outbuilding - £9,679

Build a Mansard loft conversion - £51,679

Loft conversion - £30,743

Build a kitchen extension - £41,679

Hip to gable loft conversion - £41,679

Granny annexe - £86,679

Garden office - £9,679

Convert a Garage - £15,679

Garage - £18,179

Build a flat roof extension - £21,679

Build a dormer loft conversion - £41,679

Concrete foundations - £5,929

Convert a bungalow loft - £28,679

Convert a basement - £33,891