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 £1,856
Hello So we do not work and almost any work and it works very well and qualitatively If you are interested we can work in the future
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 Ainsworth. David Anderson Builders is a friendly and reliable company based in Ainsworth wh...
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 Ainsworth. Experienced in all extension buildering work and keeping within budget and on quote. We Bu...
From £1,808
Need an Extension Builder in Ainsworth? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many y...
From £1,832
Trusted and professional extension builder in Ainsworth. Experienced in all extension buildering work and keeping within budget and on quote. Fit-o...
From £2,248
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Ainsworth 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 Ainsworth by posting a job with HaMuch and we will send it to extension builders in Ainsworth.
"RSJ installation" - BOLTON, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Bolton | £31 | £219 |
| Install An RSJ near Farnworth | £30 | £219 |
| Install An RSJ near Radcliffe | £30 | £220 |
| Install An RSJ near Little Hulton | £30 | £220 |
| Install An RSJ near Bury | £30 | £220 |
| Install An RSJ near Whitefield | £31 | £229 |
| Install An RSJ near Westhoughton | £31 | £222 |
| Install An RSJ near Swinton | £32 | £235 |
| Install An RSJ near Atherton | £31 | £223 |
| Install An RSJ near Horwich | £30 | £219 |
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 - £17,146

Two storey extension - £87,470

Build a timber frame extension - £25,646

Build a swimming pool - £80,646

Single storey extension - £47,928

Side return extension - £37,522

Install an RSJ - £1,846

Outbuilding - £9,646

Build a Mansard loft conversion - £51,646

Loft conversion - £30,435

Build a kitchen extension - £41,646

Hip to gable loft conversion - £41,646

Granny annexe - £86,646

Garden office - £9,646

Convert a Garage - £15,646

Garage - £18,146

Build a flat roof extension - £21,646

Build a dormer loft conversion - £41,646

Concrete foundations - £5,896

Convert a bungalow loft - £28,646

Convert a basement - £33,522