From £2,136
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £2,120
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £2,232
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £2,136
To install an rsj in KA3 we are a reliable and competitive extension builder. Expert service guaranteed.
From £2,192
You want to install an rsj? No problem, an Extension Builder is a reliable extension builder with years of experience helping homeowners.
From £1,944
ABG Resin Bond & Landscaping Ltd have been transforming driveways for many years, laying tarmac and installing block-paving, fence...
From £2,008
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £2,168
an Extension Builder is an established company, providing a professional and tidy service.
From £2,440
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £2,384
Our building services company JB All Trades Ltd has thirty-three years experience and we have been helping customers in Glasgow and the surrounding...
From £1,864
A friendly extension builder in KA3. Happy to provide references and a free quote to install an rsj.
From £1,848
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.
From £2,456
We are a full design & build consultancy offering project management services targeting small to medium residential projects such as kitchen & bath...
From £2,152
You want to install an rsj? No problem, an Extension Builder is a reliable extension builder with years of experience helping homeowners.

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in KA3 it ranges from £1,848 (Glenavon Joinery & Construction Services Ltd based in ML10) to £2,512 (Unibuild Property Services based in KA20).
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 KA3 by posting a job with HaMuch and we will send it to extension builders in KA3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kilmarnock | £30 | £222 |
| Install An RSJ near Irvine | £32 | £235 |
| Install An RSJ near Kilwinning | £29 | £220 |
| Install An RSJ near Troon | £30 | £229 |
| Install An RSJ near North Ayrshire | £29 | £218 |
| Install An RSJ near Barrhead | £31 | £223 |
| Install An RSJ near Newton Mearns | £30 | £224 |
| Install An RSJ near Prestwick | £21 | £161 |
| Install An RSJ near Johnstone | £45 | £333 |
| Install An RSJ near Giffnock | £30 | £223 |
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 - £17,541

Two storey extension - £88,061

Build a timber frame extension - £26,041

Build a swimming pool - £81,041

Single storey extension - £55,819

Side return extension - £41,961

Install an RSJ - £2,241

Outbuilding - £10,041

Build a Mansard loft conversion - £52,041

Loft conversion - £34,134

Build a kitchen extension - £42,041

Hip to gable loft conversion - £42,041

Granny annexe - £87,041

Garden office - £10,041

Convert a Garage - £16,041

Garage - £18,541

Build a flat roof extension - £22,041

Build a dormer loft conversion - £42,041

Concrete foundations - £6,291

Convert a bungalow loft - £29,041

Convert a basement - £37,961