Ben Birch
I have been in the building industry for 28 years and have carried out extensions,loft conversions, knock throughs, plastering, carpentry,roofing a...
From £2,128
JEWEL BUILDERS LTD are here to help customers who need an Extension Builder in B94. We offer a competitive rate to complete all your extension buil...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B94 it ranges from £2,128 (JEWEL BUILDERS LTD based in B93) to £2,264 (MYBUILD based in B93).
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 B94 by posting a job with HaMuch and we will send it to extension builders in B94.
"Total cost of structural engineer report, supply and install 6M RSJ for a load bearing wall to make kitchen/diner." - B90, job posted 01/11/25
"RSJ installation" - B90, job posted 03/08/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Redditch | £32 | £234 |
| Install An RSJ near Warwick | £28 | £213 |
| Install An RSJ near Birmingham | £28 | £226 |
| Install An RSJ near Kenilworth | £29 | £223 |
| Install An RSJ near Bromsgrove | £31 | £237 |
| Install An RSJ near Stratford-on-Avon | £27 | £215 |
| Install An RSJ near Stratford-upon-Avon | £27 | £215 |
| Install An RSJ near Coventry | £28 | £221 |
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 - £17,496

Two storey extension - £87,994

Build a timber frame extension - £25,996

Build a swimming pool - £80,996

Single storey extension - £54,920

Side return extension - £41,455

Install an RSJ - £2,196

Outbuilding - £9,996

Build a Mansard loft conversion - £51,996

Loft conversion - £33,713

Build a kitchen extension - £41,996

Hip to gable loft conversion - £41,996

Granny annexe - £86,996

Garden office - £9,996

Convert a Garage - £15,996

Garage - £18,496

Build a flat roof extension - £21,996

Build a dormer loft conversion - £41,996

Concrete foundations - £6,246

Convert a bungalow loft - £28,996

Convert a basement - £37,455