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Vladimir Pavliiciuc
SWANSEA, SA5
Local builder services CENTER "I, YOU, WE" CIC. Exterior building work build or repair a path or driveway construct or restore an ...
The Rod Squad is a trusted extension builder serving customers in Swansea and the surrounding area. Contact us to today to get a competitive quote ...
KAW Developments is a trusted extension builder serving customers in Swansea and the surrounding area. Contact us to today to get a competitive quo...
Experienced extension builder ready to quote for your work. Improve Not Move is the best extension builder in Swansea. No obligation free quotes an...
Homekare Building Services Ltd is an established and experienced local extension builder in Swansea. Please contact us for a free, no obligation qu...
Relax... you have found a reliable extension builder in Swansea. Signature Project Solutions Ltd is a friendly and reliable company based in Swanse...
Trusted and professional extension builder in Swansea. Experienced in all extension buildering work and keeping within budget and on quote. Masterb...
Need an Extension Builder in Swansea? K.D.L Property Maintenance has been helping local clients (20 mile radius) with their extension buildering jo...
R.H Damp Proofing are here to help customers who need an Extension Builder in Swansea. We offer a competitive rate to complete all your extension b...
Need an Extension Builder in Swansea? Amson Construction Limited has been helping local clients (20 mile radius) with their extension buildering jo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Swansea it ranges from £1,776 (Homekare Building Services Ltd based in SA5) to £2,216 (Signature Project Solutions Ltd based in SA1).
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 Swansea by posting a job with HaMuch and we will send it to extension builders in Swansea.
"Install an RSJ" - SA5, job posted 09/11/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Swansea | £29 | £229 |
| Install An RSJ near Gorseinon | £29 | £228 |
| Install An RSJ near Neath | £30 | £225 |
| Install An RSJ near Port Talbot | £31 | £227 |
| Install An RSJ near Llanelli | £29 | £231 |
| Install An RSJ near Neath Port Talbot | £31 | £224 |
| Install An RSJ near Pyle | £34 | £262 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Porthcawl | £33 | £252 |
| 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 - £17,305

Two storey extension - £87,707

Build a timber frame extension - £25,805

Build a swimming pool - £80,805

Single storey extension - £51,096

Side return extension - £39,304

Install an RSJ - £2,005

Outbuilding - £9,805

Build a Mansard loft conversion - £51,805

Loft conversion - £31,920

Build a kitchen extension - £41,805

Hip to gable loft conversion - £41,805

Granny annexe - £86,805

Garden office - £9,805

Convert a Garage - £15,805

Garage - £18,305

Build a flat roof extension - £21,805

Build a dormer loft conversion - £41,805

Concrete foundations - £6,055

Convert a bungalow loft - £28,805

Convert a basement - £35,304