Mathew Rees
Silicone Render System Ltd is a plastering company based in Porthcawl, with over 20 years’ experience in the plastering trade. W...
Relax... you have found a reliable extension builder in Cornelly. Cwtch Property Developments is a friendly and reliable company based in Cornelly ...
Trusted and professional extension builder in Cornelly. Experienced in all extension buildering work and keeping within budget and on quote. Comple...
Need an Extension Builder in Cornelly? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering j...
Experienced extension builder ready to quote for your work. WH Builders is the best extension builder in Cornelly. No obligation free quotes and ma...
SS BUILDER are here to help customers who need an Extension Builder in Cornelly. We offer a competitive rate to complete all your extension builder...
From £2,000
Scorpion Windows LTD is a trusted extension builder serving customers in Cornelly and the surrounding area. Contact us to today to get a competitiv...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Cornelly it ranges from £1,776 (Cwtch Property Developments based in CF34) to £4,280 (Silicone Rendering Systems Ltd based in CF36).
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 Cornelly by posting a job with HaMuch and we will send it to extension builders in Cornelly.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Pyle | £34 | £262 |
| Install An RSJ near Porthcawl | £33 | £252 |
| Install An RSJ near Bridgend | £32 | £200 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Port Talbot | £31 | £227 |
| Install An RSJ near Neath | £30 | £225 |
| Install An RSJ near Neath Port Talbot | £31 | £224 |
| Install An RSJ near Vale of Glamorgan | £29 | £217 |
| Install An RSJ near Swansea | £29 | £229 |
| Install An RSJ near Rhondda | £31 | £206 |
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 - £17,631

Two storey extension - £88,197

Build a timber frame extension - £26,131

Build a swimming pool - £81,131

Single storey extension - £57,629

Side return extension - £42,979

Install an RSJ - £2,331

Outbuilding - £10,131

Build a Mansard loft conversion - £52,131

Loft conversion - £34,982

Build a kitchen extension - £42,131

Hip to gable loft conversion - £42,131

Granny annexe - £87,131

Garden office - £10,131

Convert a Garage - £16,131

Garage - £18,631

Build a flat roof extension - £22,131

Build a dormer loft conversion - £42,131

Concrete foundations - £6,381

Convert a bungalow loft - £29,131

Convert a basement - £38,979