From £2,440
CONSIDERATE BUILDING LIMITED are here to help customers who need an Extension Builder in Gerrards Cross. We offer a competitive rate to complete al...
From £2,520
Need to find an Extension Builder near you for all your extension buildering work?
6:59 Ltd provides a local, trusted extension buildering ...
From £2,240
Experienced extension builder ready to quote for your work. KPC BUILDING SERVICES LTD is the best extension builder in Gerrards Cross. No obligatio...
From £2,488
Welcome to Velonia interiors Ltd my name is James Martin and I’m the director myself and my team have many years experience I will use subcontrac...
From £2,408
P&s Contractors are a family run business that carry out all types of roofing works. We have been working in the roofing industry for the past 29 y...
From £2,536
Relax... you have found a reliable extension builder in Gerrards Cross. J MCNAMEE J & J BUILDERS is a friendly and reliable company based in Gerrar...
From £2,544
Be Illuminated are here to help customers who need an Extension Builder in Gerrards Cross. We offer a competitive rate to complete all your extensi...
From £2,536
Ohanaa Ltd is a trusted extension builder serving customers in Gerrards Cross and the surrounding area. Contact us to today to get a competitive qu...
From £2,384
Relax... you have found a reliable extension builder in Gerrards Cross. Ohanaa Bathrooms is a friendly and reliable company based in Gerrards Cross...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Gerrards Cross it ranges from £2,240 (KPC BUILDING SERVICES LTD based in SL9) to £2,864 (T Sian T/A Design & Build Solu based in SL3).
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 Gerrards Cross by posting a job with HaMuch and we will send it to extension builders in Gerrards Cross.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Gerrards Cross | £43 | £282 |
| Install An RSJ near Rickmansworth | £42 | £278 |
| Install An RSJ near Hillingdon | £62 | £276 |
| Install An RSJ near Slough | £42 | £272 |
| Install An RSJ near Watford | £43 | £278 |
| Install An RSJ near Hazlemere | £40 | £272 |
| Install An RSJ near Chesham | £42 | £277 |
| Install An RSJ near Windsor & Maidenhead | £42 | £272 |
| Install An RSJ near Windsor | £41 | £271 |
| Install An RSJ near Maidenhead | £41 | £273 |
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 - £17,796

Two storey extension - £88,444

Build a timber frame extension - £26,296

Build a swimming pool - £81,296

Single storey extension - £60,920

Side return extension - £44,830

Install an RSJ - £2,496

Outbuilding - £10,296

Build a Mansard loft conversion - £52,296

Loft conversion - £36,525

Build a kitchen extension - £42,296

Hip to gable loft conversion - £42,296

Granny annexe - £87,296

Garden office - £10,296

Convert a Garage - £16,296

Garage - £18,796

Build a flat roof extension - £22,296

Build a dormer loft conversion - £42,296

Concrete foundations - £6,546

Convert a bungalow loft - £29,296

Convert a basement - £40,830