From £2,416
Need an Extension Builder in Egham? Keay Roofing Services Ltd has been helping local clients (10 mile radius) with their extension buildering jobs ...
From £2,360
Eg, TW20
EGPM LTD are here to help customers who need an Extension Builder in Egham. We offer a competitive rate to complete all your extension buildering j...
From £2,664
Kandy Build and Construction Ltd is an established extension buildering business in Egham. We come highly recommended and provide competitive quote...
From £2,632
ALPHA OMEGA BUILD LTD are here to help customers who need an Extension Builder in Egham. We offer a competitive rate to complete all your extension...
From £2,512
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
From £2,256
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,296
We have over 15 years of experience in the building trade. We are a small family run business and pride ourselves on our exceptional customer servi...
From £2,432
Need an Extension Builder in Egham? ABCXYZ has been helping local clients (10 mile radius) with their extension buildering jobs for many years. Get...
From £2,456
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,640
Lead by designer Richard Gordon, GDC is a London and Berkshire based Design & Build firm with a vast amount of experience in both the residential a...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Egham it ranges from £2,256 (Deep Builders Ltd based in TW18) to £2,664 (Kandy Build and Construction Ltd based in TW20).
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 Egham by posting a job with HaMuch and we will send it to extension builders in Egham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Egham | £42 | £266 |
| Install An RSJ near Staines-upon-Thames | £42 | £269 |
| Install An RSJ near Windsor | £41 | £271 |
| Install An RSJ near Windsor & Maidenhead | £42 | £272 |
| Install An RSJ near Ascot | £41 | £276 |
| Install An RSJ near New Haw | £43 | £273 |
| Install An RSJ near Sunbury-on-Thames | £42 | £279 |
| Install An RSJ near Slough | £42 | £272 |
| Install An RSJ near Walton-on-Thames | £43 | £276 |
| Install An RSJ near Elmbridge | £43 | £277 |
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 - £17,766

Two storey extension - £88,400

Build a timber frame extension - £26,266

Build a swimming pool - £81,266

Single storey extension - £60,328

Side return extension - £44,497

Install an RSJ - £2,466

Outbuilding - £10,266

Build a Mansard loft conversion - £52,266

Loft conversion - £36,248

Build a kitchen extension - £42,266

Hip to gable loft conversion - £42,266

Granny annexe - £87,266

Garden office - £10,266

Convert a Garage - £16,266

Garage - £18,766

Build a flat roof extension - £22,266

Build a dormer loft conversion - £42,266

Concrete foundations - £6,516

Convert a bungalow loft - £29,266

Convert a basement - £40,497