From £2,296
We are a family ran business that has gone through three generations of management. We pride ourselves in providing the highest quality workmanship...
From £1,832
Trusted and professional extension builder in OL8. Experienced in all extension buildering work and keeping within budget and on quote. Fit-on Gara...
From £2,248
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,960
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,872
Experienced extension builder ready to quote for your work. KG Builders & Construction Ltd is the best extension builder in OL8. No obligation free...
From £2,048
I teach others on how to achieve flawless finishes through my blog on my website. i also am a stickler for perfection. I'm very friendly and punctu...
From £2,048
Trusted and professional extension builder in OL8. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...
From £1,584
Small brickwork jobs welcome.garden wall's and pointing as well.any type of walls built.
From £2,112
Relax... you have found a reliable extension builder in OL8. CM BUILDING SERVICES is a friendly and reliable company based in OL8 who consider no j...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OL8 it ranges from £1,384 (Valdecor based in OL8) to £2,296 (N/W Builders based in Ol8).
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 OL8 by posting a job with HaMuch and we will send it to extension builders in OL8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Oldham | £31 | £228 |
| Install An RSJ near Chadderton | £31 | £224 |
| Install An RSJ near Failsworth | £35 | £235 |
| Install An RSJ near Ashton-under-Lyne | £36 | £231 |
| Install An RSJ near Royton | £30 | £225 |
| Install An RSJ near Droylsden | £34 | £237 |
| Install An RSJ near Tameside | £35 | £231 |
| Install An RSJ near Middleton | £31 | £227 |
| Install An RSJ near Dukinfield | £35 | £231 |
| Install An RSJ near Stalybridge | £37 | £230 |
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 - £17,238

Two storey extension - £87,608

Build a timber frame extension - £25,738

Build a swimming pool - £80,738

Single storey extension - £49,768

Side return extension - £38,557

Install an RSJ - £1,938

Outbuilding - £9,738

Build a Mansard loft conversion - £51,738

Loft conversion - £31,298

Build a kitchen extension - £41,738

Hip to gable loft conversion - £41,738

Granny annexe - £86,738

Garden office - £9,738

Convert a Garage - £15,738

Garage - £18,238

Build a flat roof extension - £21,738

Build a dormer loft conversion - £41,738

Concrete foundations - £5,988

Convert a bungalow loft - £28,738

Convert a basement - £34,557