From £2,512
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,536
Aerea is a trusted extension builder serving customers in Lightwater and the surrounding area. Contact us to today to get a competitive quote for e...
From £2,480
Member since August 2026
Relax... you have found a reliable extension builder in Lightwater. ABC Associates STRUCTURES 4 U is a friendly and reliable company based in Light...
From £2,392
Need an Extension Builder in Lightwater? VA Structures has been helping local clients (10 mile radius) with their extension buildering jobs for man...
From £2,480
Trusted and professional extension builder in Lightwater. Experienced in all extension buildering work and keeping within budget and on quote. DC B...
From £2,632
DP Services is a fully insured friendly local company which has been trading since 2002 and delivers high quality building work in domestic extensi...
From £2,104
Elite Construction London Ltd has been one of the top providers of building and remodeling services in London for more than ten years.Our goal is ...
From £2,528
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,496
Pinnacle Property Services is a trusted extension builder serving customers in Lightwater and the surrounding area. Contact us to today to get a co...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Lightwater it ranges from £2,104 (Elite Construction London Ltd based in TW8) to £2,632 (DP Services based in RG41).
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 Lightwater by posting a job with HaMuch and we will send it to extension builders in Lightwater.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Camberley | £41 | £283 |
| Install An RSJ near Ascot | £41 | £276 |
| Install An RSJ near Sandhurst | £41 | £283 |
| Install An RSJ near Bracknell | £41 | £286 |
| Install An RSJ near Farnborough | £41 | £273 |
| Install An RSJ near Woking | £43 | £277 |
| Install An RSJ near Bracknell Forest | £41 | £287 |
| Install An RSJ near Ash Vale | £41 | £277 |
| Install An RSJ near Egham | £42 | £266 |
| Install An RSJ near New Haw | £43 | £273 |
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 - £17,776

Two storey extension - £88,414

Build a timber frame extension - £26,276

Build a swimming pool - £81,276

Single storey extension - £60,520

Side return extension - £44,605

Install an RSJ - £2,476

Outbuilding - £10,276

Build a Mansard loft conversion - £52,276

Loft conversion - £36,338

Build a kitchen extension - £42,276

Hip to gable loft conversion - £42,276

Granny annexe - £87,276

Garden office - £10,276

Convert a Garage - £16,276

Garage - £18,776

Build a flat roof extension - £22,276

Build a dormer loft conversion - £42,276

Concrete foundations - £6,526

Convert a bungalow loft - £29,276

Convert a basement - £40,605