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 £1,992
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
From £1,976
Relax... you have found a reliable extension builder in Northern Quarter. David Anderson Builders is a friendly and reliable company based in North...
From £2,160
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
From £2,048
Trusted and professional extension builder in Northern Quarter. Experienced in all extension buildering work and keeping within budget and on quote...
From £1,808
Need an Extension Builder in Northern Quarter? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £1,832
Trusted and professional extension builder in Northern Quarter. Experienced in all extension buildering work and keeping within budget and on quote...
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 £2,112
Relax... you have found a reliable extension builder in Northern Quarter. CM BUILDING SERVICES is a friendly and reliable company based in Northern...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Northern Quarter it ranges from £1,160 (Aquatec Builder based in OL10) to £2,248 (Northern Garage Conversion based in OL9).
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 Northern Quarter by posting a job with HaMuch and we will send it to extension builders in Northern Quarter.
"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
"Install an RSJ" - M27, job posted 09/02/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Manchester | £32 | £236 |
| Install An RSJ near Old Trafford | £32 | £236 |
| Install An RSJ near Salford | £32 | £238 |
| Install An RSJ near Droylsden | £34 | £237 |
| Install An RSJ near Failsworth | £35 | £236 |
| Install An RSJ near Prestwich | £31 | £234 |
| Install An RSJ near Stretford | £32 | £235 |
| Install An RSJ near Reddish | £34 | £236 |
| Install An RSJ near Middleton | £31 | £227 |
| Install An RSJ near Swinton | £32 | £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 - £17,172

Two storey extension - £87,508

Build a timber frame extension - £25,672

Build a swimming pool - £80,672

Single storey extension - £48,440

Side return extension - £37,810

Install an RSJ - £1,872

Outbuilding - £9,672

Build a Mansard loft conversion - £51,672

Loft conversion - £30,675

Build a kitchen extension - £41,672

Hip to gable loft conversion - £41,672

Granny annexe - £86,672

Garden office - £9,672

Convert a Garage - £15,672

Garage - £18,172

Build a flat roof extension - £21,672

Build a dormer loft conversion - £41,672

Concrete foundations - £5,922

Convert a bungalow loft - £28,672

Convert a basement - £33,810