From £1,720
Need to find an Extension Builder near you for all your extension buildering work?
SDW CONSTRUCTION LTD provides a local, trusted extension...
From £1,560
John Sillitoe Building Contractor is a trusted extension builder serving customers in Powys and the surrounding area. Contact us to today to get a ...
From £1,712
Relax... you have found a reliable extension builder in Powys. EVABUILD LIMITED is a friendly and reliable company based in Powys who consider no j...
From £1,920
In the trade since left school(1990),accommodating and reliable,
From £1,784
Trusted and professional extension builder in Powys. Experienced in all extension buildering work and keeping within budget and on quote. Richard S...
From £2,056
Trusted and professional extension builder in Powys. Experienced in all extension buildering work and keeping within budget and on quote. J S CONST...
From £2,040
Relax... you have found a reliable extension builder in Powys. Your Home Made Ltd is a friendly and reliable company based in Powys who consider no...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Powys it ranges from £1,560 (John Sillitoe Building Contractor based in SY16) to £2,056 (J S CONSTRUCTION based in SY10).
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 Powys by posting a job with HaMuch and we will send it to extension builders in Powys.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Shrewsbury | £32 | £249 |
| Install An RSJ near Wrexham Maelor | £34 | £261 |
| Install An RSJ near Wrexham | £34 | £263 |
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 - £17,127

Two storey extension - £87,441

Build a timber frame extension - £25,627

Build a swimming pool - £80,627

Single storey extension - £47,549

Side return extension - £37,309

Install an RSJ - £1,827

Outbuilding - £9,627

Build a Mansard loft conversion - £51,627

Loft conversion - £30,257

Build a kitchen extension - £41,627

Hip to gable loft conversion - £41,627

Granny annexe - £86,627

Garden office - £9,627

Convert a Garage - £15,627

Garage - £18,127

Build a flat roof extension - £21,627

Build a dormer loft conversion - £41,627

Concrete foundations - £5,877

Convert a bungalow loft - £28,627

Convert a basement - £33,309