From £1,360
MKS Builders Ltd is an established extension buildering business in OL11. We come highly recommended and provide competitive quotes for your work.<...
From £2,024
Jnc has been going for 15 years now we have over 10 lads at any time working for us . We Speselied in new building and Exstenshons
From £2,216
Experienced extension builder ready to quote for your work. Tetlow Construction Ltd is the best extension builder in OL11. No obligation free quote...
From £2,304
Need to find an Extension Builder near you for all your extension buildering work?
Tetrosyl provides a local, trusted extension buildering ...
From £2,016
We are a local building company who specialises in keeping our customers happy we are reliable friendly. We carry out all types of building wo...
From £1,792
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,944
H.B.S is an established extension buildering business in OL11. We come highly recommended and provide competitive quotes for your work.
From £1,160
Member since November 2019
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,136
PLP CONSTRUCTION LTD is an established and experienced local extension builder in OL11. Please contact us for a free, no obligation quote and compe...
From £2,256
I G Smedley is an established and experienced local extension builder in OL11. Please contact us for a free, no obligation quote and competitive ra...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OL11 it ranges from £1,160 (Aquatec Builder based in OL10) to £2,304 (Tetrosyl based in OL16).
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 OL11 by posting a job with HaMuch and we will send it to extension builders in OL11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Rochdale | £30 | £221 |
| Install An RSJ near Heywood | £30 | £222 |
| Install An RSJ near Royton | £30 | £225 |
| Install An RSJ near Middleton | £31 | £227 |
| Install An RSJ near Chadderton | £31 | £224 |
| Install An RSJ near Bury | £30 | £220 |
| Install An RSJ near Oldham | £31 | £228 |
| Install An RSJ near Whitefield | £31 | £229 |
| Install An RSJ near Prestwich | £31 | £234 |
| Install An RSJ near Failsworth | £35 | £235 |
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 - £17,221

Two storey extension - £87,581

Build a timber frame extension - £25,721

Build a swimming pool - £80,721

Single storey extension - £49,416

Side return extension - £38,359

Install an RSJ - £1,921

Outbuilding - £9,721

Build a Mansard loft conversion - £51,721

Loft conversion - £31,133

Build a kitchen extension - £41,721

Hip to gable loft conversion - £41,721

Granny annexe - £86,721

Garden office - £9,721

Convert a Garage - £15,721

Garage - £18,221

Build a flat roof extension - £21,721

Build a dormer loft conversion - £41,721

Concrete foundations - £5,971

Convert a bungalow loft - £28,721

Convert a basement - £34,359