From £2,232
LONGSTONE CONSTRUCTION LTD are here to help customers who need an Extension Builder in RH10. We offer a competitive rate to complete all your exten...
From £2,064
Contact us: 07454160840 Email: enquiries@ We are a family run business since 15 year’s+. We are build on tru...
From £2,152
Need an Extension Builder in RH10? JH Building Services has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
From £2,048
Need to find an Extension Builder near you for all your extension buildering work?
WATTSON BROS BUILDING LTD provides a local, trusted exte...
From £2,080
J S Nisbet Loft Conversions are here to help customers who need an Extension Builder in RH10. We offer a competitive rate to complete all your exte...
From £1,528
E.P.A. (UK) LTD is an established and experienced local extension builder in RH10. Please contact us for a free, no obligation quote and competitiv...
From £2,232
We are a family run business we 40 years experience delivering multiple projects from new developments . Extension. Loft conversion. Including foun...
From £2,264
DC Construction is a trusted extension builder serving customers in RH10 and the surrounding area. Contact us to today to get a competitive quote f...
From £2,264
If there is one common emotion felt by homeowners when setting out with a building project it’s fear. Putting your trust into somebody to complet...
From £2,064
Need to find an Extension Builder near you for all your extension buildering work?
Blaze Boilers & Fires 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 RH10 it ranges from £1,528 (E.P.A. (UK) LTD based in RH10) to £2,264 (DC Construction based in RH11).
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 RH10 by posting a job with HaMuch and we will send it to extension builders in RH10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Crawley | £38 | £255 |
| Install An RSJ near Horley | £38 | £258 |
| Install An RSJ near Mid Sussex | £35 | £261 |
| Install An RSJ near East Grinstead | £37 | £259 |
| Install An RSJ near Horsham | £38 | £265 |
| Install An RSJ near Haywards Heath | £35 | £256 |
| Install An RSJ near Redhill | £41 | £269 |
| Install An RSJ near Reigate | £40 | £270 |
| Install An RSJ near Burgess Hill | £36 | £240 |
| Install An RSJ near Reigate & Banstead | £41 | £271 |
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 - £17,393

Two storey extension - £87,839

Build a timber frame extension - £25,893

Build a swimming pool - £80,893

Single storey extension - £52,856

Side return extension - £40,294

Install an RSJ - £2,093

Outbuilding - £9,893

Build a Mansard loft conversion - £51,893

Loft conversion - £32,745

Build a kitchen extension - £41,893

Hip to gable loft conversion - £41,893

Granny annexe - £86,893

Garden office - £9,893

Convert a Garage - £15,893

Garage - £18,393

Build a flat roof extension - £21,893

Build a dormer loft conversion - £41,893

Concrete foundations - £6,143

Convert a bungalow loft - £28,893

Convert a basement - £36,294