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Arthur Cooper
Experienced extension builder ready to quote for your work. J Cooper Roofing is the best extension builder in Godstone. No obligation free quotes a...
BENCHMARK BUILDING & is a trusted extension builder serving customers in Godstone and the surrounding area. Contact us to today to get a competitiv...
Need to find an Extension Builder near you for all your extension buildering work?
DPP Construction (David Price Partnership) provides a lo...
Trusted and professional extension builder in Godstone. Experienced in all extension buildering work and keeping within budget and on quote. D B Jo...
ALBANA PERANA
The Reigate Marble Shop LTD.
Established in 2005, The Reigate Marble Shop...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
S C H BUILDING SERVICES provides a local, trusted extens...
Apsley Wall Ltd is an established extension buildering business in Godstone. We come highly recommended and provide competitive quotes for your wor...
Trusted and professional extension builder in Godstone. Experienced in all extension buildering work and keeping within budget and on quote. Dance ...
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Godstone it ranges from £1,928 (Apsley Wall Ltd based in RH19) to £2,536 (Dance & Co Developments based in RH19).
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 Godstone by posting a job with HaMuch and we will send it to extension builders in Godstone.
"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, job posted 11/08/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Caterham | £43 | £271 |
| Install An RSJ near Redhill | £41 | £269 |
| Install An RSJ near Reigate | £40 | £270 |
| Install An RSJ near Horley | £38 | £258 |
| Install An RSJ near Reigate & Banstead | £41 | £271 |
| Install An RSJ near Tadworth | £41 | £271 |
| Install An RSJ near East Grinstead | £37 | £259 |
| Install An RSJ near Crawley | £38 | £255 |
| Install An RSJ near Croydon | £42 | £267 |
| Install An RSJ near Epsom | £44 | £275 |
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 - £17,612

Two storey extension - £88,168

Build a timber frame extension - £26,112

Build a swimming pool - £81,112

Single storey extension - £57,240

Side return extension - £42,760

Install an RSJ - £2,312

Outbuilding - £10,112

Build a Mansard loft conversion - £52,112

Loft conversion - £34,800

Build a kitchen extension - £42,112

Hip to gable loft conversion - £42,112

Granny annexe - £87,112

Garden office - £10,112

Convert a Garage - £16,112

Garage - £18,612

Build a flat roof extension - £22,112

Build a dormer loft conversion - £42,112

Concrete foundations - £6,362

Convert a bungalow loft - £29,112

Convert a basement - £38,760