Barlam Drylining Ltd are here to help customers who need an Extension Builder in Ferndale. We offer a competitive rate to complete all your extensi...
P ALLEN BUILDERS is an established and experienced local extension builder in Ferndale. Please contact us for a free, no obligation quote and compe...
We are a small family run business, established over 35 years ago, specialising in Hard Landscaping (Patios) and Block Paving.We a...
G Wager Building Maintenance is a trusted extension builder serving customers in Ferndale 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 Ferndale. Experienced in all extension buildering work and keeping within budget and on quote. RJ CON...
From £1,728
Need an Extension Builder in Ferndale? A POWELL CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jo...
From £1,776
Ferndale, CF43
L E JONES BUILDER is an established extension buildering business in Ferndale. We come highly recommended and provide competitive quotes for your w...
From £2,008
Dare Fitness is an established extension buildering business in Ferndale. We come highly recommended and provide competitive quotes for your work.<...
From £1,816
Excel Home Design Ltd is an established extension buildering business in Ferndale. We come highly recommended and provide competitive quotes for yo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Ferndale 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 Ferndale by posting a job with HaMuch and we will send it to extension builders in Ferndale.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rhondda, Cynon, Taff | £31 | £209 |
| Install An RSJ near Rhondda | £31 | £206 |
| Install An RSJ near Aberdare | £32 | £212 |
| Install An RSJ near Pontypridd | £33 | £211 |
| Install An RSJ near Merthyr Tydfil | £33 | £220 |
| Install An RSJ near Church Village | £34 | £214 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Caerphilly | £33 | £208 |
| Install An RSJ near Tredegar | £30 | £217 |
| Install An RSJ near Bridgend | £32 | £200 |
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 - £17,169

Two storey extension - £87,503

Build a timber frame extension - £25,669

Build a swimming pool - £80,669

Single storey extension - £48,376

Side return extension - £37,774

Install an RSJ - £1,869

Outbuilding - £9,669

Build a Mansard loft conversion - £51,669

Loft conversion - £30,645

Build a kitchen extension - £41,669

Hip to gable loft conversion - £41,669

Granny annexe - £86,669

Garden office - £9,669

Convert a Garage - £15,669

Garage - £18,169

Build a flat roof extension - £21,669

Build a dormer loft conversion - £41,669

Concrete foundations - £5,919

Convert a bungalow loft - £28,669

Convert a basement - £33,774