Gary Wilson
Reliable person 25 years experience
if you look on a website rated people and have a look at my ratings
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
John Kinloch Construction Ltd provides a local, trusted ...
Need to find an Extension Builder near you for all your extension buildering work?
James Leonnard Builders provides a local, trusted extens...
Trusted and professional extension builder in B37. Experienced in all extension buildering work and keeping within budget and on quote. Castlehall ...
From £2,096
Experienced extension builder ready to quote for your work. DM FLOYD BUILDING is the best extension builder in B37. No obligation free quotes and m...
From £1,632
Peter Smith
Reliable and trustworthy
Also on checkatrafe
From £1,224
JAMES Crawford
we have over 13 years exp
we go that extra mile to make sure customers are 100 % happy
we cover a 20 miles radus for b26 area...
From £2,168
Need to find an Extension Builder near you for all your extension buildering work?
Timber Innovations provides a local, trusted extension b...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B37 it ranges from £1,224 (J s building & maintenance services limited based in B26) to £2,168 (Timber Innovations based in B92).
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 B37 by posting a job with HaMuch and we will send it to extension builders in B37.
"RSJ installation and knock through" - B76, job posted 09/10/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Sutton Coldfield | £29 | £228 |
| Install An RSJ near Birmingham | £28 | £226 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Smethwick | £29 | £225 |
| Install An RSJ near Tamworth | £33 | £288 |
| Install An RSJ near Coventry | £28 | £221 |
| Install An RSJ near Nuneaton | £29 | £225 |
| Install An RSJ near Oldbury | £29 | £226 |
| Install An RSJ near Bedworth | £28 | £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 - £17,176

Two storey extension - £87,515

Build a timber frame extension - £25,676

Build a swimming pool - £80,676

Single storey extension - £48,529

Side return extension - £37,860

Install an RSJ - £1,876

Outbuilding - £9,676

Build a Mansard loft conversion - £51,676

Loft conversion - £30,717

Build a kitchen extension - £41,676

Hip to gable loft conversion - £41,676

Granny annexe - £86,676

Garden office - £9,676

Convert a Garage - £15,676

Garage - £18,176

Build a flat roof extension - £21,676

Build a dormer loft conversion - £41,676

Concrete foundations - £5,926

Convert a bungalow loft - £28,676

Convert a basement - £33,860