From £1,952
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,168
phoenix builders is a trusted extension builder serving customers in M11 and the surrounding area. Contact us to today to get a competitive quote f...
From £2,272
Avon Piping Limited are here to help customers who need an Extension Builder in M11. We offer a competitive rate to complete all your extension bui...
From £1,856
H TIMMINS BUILDING & MAINT is an established extension buildering business in M11. We come highly recommended and provide competitive quotes for yo...
From £2,032
Need to find an Extension Builder near you for all your extension buildering work?
Oscar Renn provides a local, trusted extension builderin...
From £1,968
Trusted and professional extension builder in M11. Experienced in all extension buildering work and keeping within budget and on quote. B R M S hav...
From £2,056
Cornerstone Building Maintenance & Restoration Ltd is an established and experienced local extension builder in M11. Please contact us for a free, ...
From £2,000
Our building services company Silkrise Construction have ten years’ experience and have been helping customers in Manchester and the surrounding ...
From £1,808
Experienced extension builder ready to quote for your work. MyDestigo is the best extension builder in M11. No obligation free quotes and many happ...
From £1,936
Need to find an Extension Builder near you for all your extension buildering work?
J K S Builder provides a local, trusted extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in M11 it ranges from £1,808 (MyDestigo based in M1) to £2,272 (Avon Piping Limited based in M12).
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 M11 by posting a job with HaMuch and we will send it to extension builders in M11.
"RSJ installation replacing a badly installed RSJ that supports a wall between the old kitchen and rear lounge. The original builder installed the incorrect weight (not heavy enough) and then proceeded to put a suppirt bar underneath by welding. The weld buckled the beam and this is how its been..." - SK4, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Droylsden | £34 | £237 |
| Install An RSJ near Failsworth | £35 | £236 |
| Install An RSJ near Manchester | £32 | £236 |
| Install An RSJ near Reddish | £34 | £236 |
| Install An RSJ near Denton | £35 | £234 |
| Install An RSJ near Old Trafford | £32 | £236 |
| Install An RSJ near Ashton-under-Lyne | £36 | £232 |
| Install An RSJ near Dukinfield | £35 | £232 |
| Install An RSJ near Tameside | £35 | £232 |
| Install An RSJ near Salford | £32 | £238 |
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 - £17,305

Two storey extension - £87,707

Build a timber frame extension - £25,805

Build a swimming pool - £80,805

Single storey extension - £51,096

Side return extension - £39,304

Install an RSJ - £2,005

Outbuilding - £9,805

Build a Mansard loft conversion - £51,805

Loft conversion - £31,920

Build a kitchen extension - £41,805

Hip to gable loft conversion - £41,805

Granny annexe - £86,805

Garden office - £9,805

Convert a Garage - £15,805

Garage - £18,305

Build a flat roof extension - £21,805

Build a dormer loft conversion - £41,805

Concrete foundations - £6,055

Convert a bungalow loft - £28,805

Convert a basement - £35,304