From £2,152
Integral Builders Ltd is an established extension buildering business in Cobham. We come highly recommended and provide competitive quotes for your...
From £2,680
Cobham, KT11
New build, complete refurbishment and renovation service. We provide a quality turnkey service in Central London , South West London
From £2,560
Cobham based design and build company.For further details email: Info@
From £2,144
Cobham, KT11
Relax... you have found a reliable extension builder in Cobham. LINDSEY BUILDERS (KINGSTON)LTD is a friendly and reliable company based in Cobham w...
From £2,384
We are a sustainable construction company who conduct property refurbishments. We believe there is a better way to do construction with an emphasis...
From £2,472
Surrey, KT11
Need to find an Extension Builder near you for all your extension buildering work?
Living Oak provides a local, trusted extension builderin...
From £2,344
Experienced extension builder ready to quote for your work. Charybdis Developments Ltd is the best extension builder in Cobham. No obligation free ...
From £2,440
Trusted and professional extension builder in Cobham. Experienced in all extension buildering work and keeping within budget and on quote. TIMBERED...
From £2,424
Need to find an Extension Builder near you for all your extension buildering work?
K Lineage provides a local, trusted extension buildering...
From £2,752
Need to find an Extension Builder near you for all your extension buildering work?
Jaswal Design & Build provides a local, trusted extensio...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Cobham it ranges from £2,144 (LINDSEY BUILDERS (KINGSTON)LTD based in KT11) to £2,752 (Jaswal Design & Build based in KT12).
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 Cobham by posting a job with HaMuch and we will send it to extension builders in Cobham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Elmbridge | £43 | £277 |
| Install An RSJ near Walton-on-Thames | £43 | £277 |
| Install An RSJ near Esher | £43 | £274 |
| Install An RSJ near Great Bookham | £42 | £281 |
| Install An RSJ near New Haw | £43 | £273 |
| Install An RSJ near West Molesey | £43 | £279 |
| Install An RSJ near Sunbury-on-Thames | £42 | £279 |
| Install An RSJ near Epsom | £43 | £274 |
| Install An RSJ near Woking | £43 | £277 |
| Install An RSJ near Ewell | £43 | £274 |
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 - £17,735

Two storey extension - £88,353

Build a timber frame extension - £26,235

Build a swimming pool - £81,235

Single storey extension - £59,704

Side return extension - £44,146

Install an RSJ - £2,435

Outbuilding - £10,235

Build a Mansard loft conversion - £52,235

Loft conversion - £35,955

Build a kitchen extension - £42,235

Hip to gable loft conversion - £42,235

Granny annexe - £87,235

Garden office - £10,235

Convert a Garage - £16,235

Garage - £18,735

Build a flat roof extension - £22,235

Build a dormer loft conversion - £42,235

Concrete foundations - £6,485

Convert a bungalow loft - £29,235

Convert a basement - £40,146