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From £1,816
DRAGON CONSTRUCTION T/A
Experienced extension builder ready to quote for your work. DRAGON CONSTRUCTION T/A is the best extension builder in Wales. No obligation free quot...
From £1,808
SP Coupland Ltd
Our building services company SP Coupland Ltd have thirty-eight years’ experience and have been helping customers in Sir Ceredigion and the surro...
RSJ cost in Wales
How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Wales it ranges from £1,808 (SP Coupland Ltd based in SY25) to £1,816 (DRAGON CONSTRUCTION T/A based in SY25).
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 Wales by posting a job with HaMuch and we will send it to extension builders in Wales.
Estimates for common extension builder jobs in Wales;
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 - £17,112
Two storey extension - £87,418
Build a timber frame extension - £25,612
Build a swimming pool - £80,612
Single storey extension - £47,240
Side return extension - £37,135
Install an RSJ - £1,812
Outbuilding - £9,612
Build a Mansard loft conversion - £51,612
Loft conversion - £30,113
Build a kitchen extension - £41,612
Hip to gable loft conversion - £41,612
Granny annexe - £86,612
Garden office - £9,612
Convert a Garage - £15,612
Garage - £18,112
Build a flat roof extension - £21,612
Build a dormer loft conversion - £41,612
Concrete foundations - £5,862
Convert a bungalow loft - £28,612
Convert a basement - £33,135