From £2,112
Experienced extension builder ready to quote for your work. Mole Valley Builders is the best extension builder in RH5. No obligation free quotes an...
From £2,368
Established in 2013, Mole Valley Builders is a family-owned, independent building company. Our team shares more than 40 years of industry experienc...
From £2,680
Stovetech Surrey are professional installers of multi-fuel and wood burning stoves.We are OFTEC registered ensuring that all of our work co...
From £2,632
Relax... you have found a reliable extension builder in RH5. Atp Building Services is a friendly and reliable company based in RH5 who consider no ...
From £2,608
Garage Door Repairs is an established extension buildering business in RH5. We come highly recommended and provide competitive quotes for your work...
From £2,344
Surrey Hills Construction is an established and experienced local extension builder in RH5. Please contact us for a free, no obligation quote and c...
From £2,728
Founded in 2011 by Clive Bordoli and Jim Kelting, we set out to form and lead a team of tradesmen who could share our work ethic and attention to d...
From £2,688
Our family-run building services company JGP Plastering & Brickwork Ltd was established in 2006. Since then we have been helping customers in Surre...
From £2,080
T J WILD BUILDING CONTRACTOR is an established and experienced local extension builder in RH5. Please contact us for a free, no obligation quote an...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in RH5 it ranges from £2,080 (T J WILD BUILDING CONTRACTOR based in RH6) to £2,728 (Surrey Hills Construction based in RH5).
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 RH5 by posting a job with HaMuch and we will send it to extension builders in RH5.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Great Bookham | £42 | £281 |
| Install An RSJ near Reigate | £40 | £270 |
| Install An RSJ near Tadworth | £41 | £271 |
| Install An RSJ near Horley | £38 | £258 |
| Install An RSJ near Redhill | £41 | £269 |
| Install An RSJ near Reigate & Banstead | £41 | £271 |
| Install An RSJ near Epsom | £43 | £274 |
| Install An RSJ near Horsham | £38 | £265 |
| Install An RSJ near Crawley | £38 | £255 |
| Install An RSJ near Guildford | £53 | £298 |
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 - £17,750

Two storey extension - £88,376

Build a timber frame extension - £26,250

Build a swimming pool - £81,250

Single storey extension - £60,008

Side return extension - £44,317

Install an RSJ - £2,450

Outbuilding - £10,250

Build a Mansard loft conversion - £52,250

Loft conversion - £36,098

Build a kitchen extension - £42,250

Hip to gable loft conversion - £42,250

Granny annexe - £87,250

Garden office - £10,250

Convert a Garage - £16,250

Garage - £18,750

Build a flat roof extension - £22,250

Build a dormer loft conversion - £42,250

Concrete foundations - £6,500

Convert a bungalow loft - £29,250

Convert a basement - £40,317