From £2,192
Trusted and professional extension builder in RH1. Experienced in all extension buildering work and keeping within budget and on quote. Studio Luci...
From £2,520
Relax... you have found a reliable extension builder in RH1. Creations Building & Landscaping is a friendly and reliable company based in RH1 who c...
From £2,512
Need an Extension Builder in RH1? PJS Partnership Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many...
From £2,296
ROLAND KNIGHT CONSTRUCTION LTD is an established and experienced local extension builder in RH1. Please contact us for a free, no obligation quote ...
From £2,128
Upright Construction Ltd is an established and experienced local extension builder in RH1. Please contact us for a free, no obligation quote and co...
From £2,424
Need to find an Extension Builder near you for all your extension buildering work?
S C H BUILDING SERVICES provides a local, trusted extens...
From £2,088
Relax... you have found a reliable extension builder in RH1. Goose Construction Ltd is a friendly and reliable company based in RH1 who consider no...
From £1,992
The Reigate Marble Shop LTD.
Established in 2005, The Reigate Marble Shop...
From £2,240
Need an Extension Builder in RH1? C Dingle Builders & Decorators has been helping local clients (10 mile radius) with their extension buildering jo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in RH1 it ranges from £1,992 (REIGATE MARBLE SHOP based in RH2) to £2,520 (Creations Building & Landscaping based in RH2).
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 RH1 by posting a job with HaMuch and we will send it to extension builders in RH1.
"RSJ installation also I will need help with the cost of theses below IRS extension either the following measurements. L-3m w-3.5m H-Item Site Preparation Groundworks & Foundations Floor Construction Superstructure Roof Construction Windows and External Doors Internal Works Electrical ..." - CR3
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Redhill | £36 | £236 |
| Install An RSJ near Reigate | £36 | £238 |
| Install An RSJ near Reigate & Banstead | £36 | £235 |
| Install An RSJ near Caterham | £37 | £235 |
| Install An RSJ near Horley | £35 | £234 |
| Install An RSJ near Tadworth | £36 | £234 |
| Install An RSJ near Epsom | £37 | £235 |
| Install An RSJ near Crawley | £33 | £227 |
| Install An RSJ near Ewell | £37 | £235 |
| Install An RSJ near Sutton | £37 | £234 |
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 - £17,564

Two storey extension - £88,096

Build a timber frame extension - £26,064

Build a swimming pool - £81,064

Single storey extension - £56,280

Side return extension - £42,220

Install an RSJ - £2,264

Outbuilding - £10,064

Build a Mansard loft conversion - £52,064

Loft conversion - £34,350

Build a kitchen extension - £42,064

Hip to gable loft conversion - £42,064

Granny annexe - £87,064

Garden office - £10,064

Convert a Garage - £16,064

Garage - £18,564

Build a flat roof extension - £22,064

Build a dormer loft conversion - £42,064

Concrete foundations - £6,314

Convert a bungalow loft - £29,064

Convert a basement - £38,220