From £2,336
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,280
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,440
Abbey Services (Scotland) Ltd is a trusted extension builder serving customers in Renfrewshire and the surrounding area. Contact us to today to get...
From £2,384
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,576
Experienced extension builder ready to quote for your work. Glencroft Builders Ltd is the best extension builder in Renfrewshire. No obligation fre...
From £2,472
LOCHNAGAR CONSTRUCTION LTD is a trusted extension builder serving customers in Renfrewshire and the surrounding area. Contact us to today to get a ...
From £2,328
LAKE BUILDERS LTD is an established extension buildering business in Renfrewshire. We come highly recommended and provide competitive quotes for yo...
From £2,280
Adelphi Design & Construction Ltd is an established and experienced local extension builder in Renfrewshire. Please contact us for a free, no oblig...
From £2,496
Need an Extension Builder in Renfrewshire? Gman-Joinery & Builders has been helping local clients (20 mile radius) with their extension buildering ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Renfrewshire it ranges from £1,576 (Glencroft Builders Ltd based in G81) to £2,512 (KFM Developments LTD based in G52).
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 Renfrewshire by posting a job with HaMuch and we will send it to extension builders in Renfrewshire.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Renfrewshire | £54 | £398 |
| Install An RSJ near Johnstone | £52 | £381 |
| Install An RSJ near Paisley | £34 | £259 |
| Install An RSJ near Erskine | £34 | £258 |
| Install An RSJ near Renfrew | £35 | £263 |
| Install An RSJ near Barrhead | £35 | £255 |
| Install An RSJ near Clydebank | £35 | £264 |
| Install An RSJ near Dumbarton | £29 | £232 |
| Install An RSJ near Greenock | £30 | £243 |
| Install An RSJ near Port Glasgow | £32 | £250 |
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 - £17,610

Two storey extension - £88,166

Build a timber frame extension - £26,110

Build a swimming pool - £81,110

Single storey extension - £57,208

Side return extension - £42,742

Install an RSJ - £2,310

Outbuilding - £10,110

Build a Mansard loft conversion - £52,110

Loft conversion - £34,785

Build a kitchen extension - £42,110

Hip to gable loft conversion - £42,110

Granny annexe - £87,110

Garden office - £10,110

Convert a Garage - £16,110

Garage - £18,610

Build a flat roof extension - £22,110

Build a dormer loft conversion - £42,110

Concrete foundations - £6,360

Convert a bungalow loft - £29,110

Convert a basement - £38,742