From £2,704
Need to find an Extension Builder near you for all your extension buildering work?
V&Co. provides a local, trusted extension buildering ser...
From £2,552
We are a London based Design & Build construction company offering the following :Property Extensions and Major RenovationsBespoke Kitchens - Desig...
From £2,520
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,312
Trusted and professional extension builder in Thames Ditton. Experienced in all extension buildering work and keeping within budget and on quote. E...
From £2,464
Need an Extension Builder in Thames Ditton? Lime Showrooms Ltd. has been helping local clients (10 mile radius) with their extension buildering job...
From £2,368
Need to find an Extension Builder near you for all your extension buildering work?
Leith All Building & Decorating provides a local, truste...
From £2,424
Tricor for Tri - Corporations : Innovation - Inspiration - Vision - Safety - Quality – Productivity Tricor Construction Ltd seek to become a pro...
From £2,616
Need to find an Extension Builder near you for all your extension buildering work?
ALTERNATE CONSTRUCTION LTD provides a local, trusted ext...
From £2,272
P L CONTRACTORS DESIGN & BUILD is a trusted extension builder serving customers in Thames Ditton and the surrounding area. Contact us to today to g...
From £2,336
Trusted and professional extension builder in Thames Ditton. Experienced in all extension buildering work and keeping within budget and on quote. A...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Thames Ditton it ranges from £2,272 (P L CONTRACTORS DESIGN & BUILD based in KT1) to £2,704 (V&Co. based in KT6).
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 Thames Ditton by posting a job with HaMuch and we will send it to extension builders in Thames Ditton.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near West Molesey | £43 | £279 |
| Install An RSJ near Kingston Upon Thames | £43 | £271 |
| Install An RSJ near Richmond Upon Thames | £43 | £273 |
| Install An RSJ near Esher | £43 | £274 |
| Install An RSJ near Elmbridge | £43 | £277 |
| Install An RSJ near Walton-on-Thames | £43 | £276 |
| Install An RSJ near Ewell | £43 | £274 |
| Install An RSJ near Sunbury-on-Thames | £42 | £279 |
| Install An RSJ near Hounslow | £43 | £281 |
| Install An RSJ near Epsom | £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 - £17,757

Two storey extension - £88,385

Build a timber frame extension - £26,257

Build a swimming pool - £81,257

Single storey extension - £60,136

Side return extension - £44,389

Install an RSJ - £2,457

Outbuilding - £10,257

Build a Mansard loft conversion - £52,257

Loft conversion - £36,158

Build a kitchen extension - £42,257

Hip to gable loft conversion - £42,257

Granny annexe - £87,257

Garden office - £10,257

Convert a Garage - £16,257

Garage - £18,757

Build a flat roof extension - £22,257

Build a dormer loft conversion - £42,257

Concrete foundations - £6,507

Convert a bungalow loft - £29,257

Convert a basement - £40,389