Adam Porter
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
Need an Extension Builder in Whitfield? M LONG T/A MJ BUILDINGS has been helping local clients (20 mile radius) with their extension buildering job...
From £2,024
Relax... you have found a reliable extension builder in Whitfield. Cosbuild and Maintenance ltd is a friendly and reliable company based in Whitfie...
From £1,736
4D BUILDERS LTD are here to help customers who need an Extension Builder in Whitfield. We offer a competitive rate to complete all y...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Whitfield it ranges from £1,568 (A-Pex Building based in CT17) to £2,024 (Cosbuild and Maintenance ltd based in CT17).
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 Whitfield by posting a job with HaMuch and we will send it to extension builders in Whitfield.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Dover | £29 | £226 |
| Install An RSJ near Deal | £26 | £199 |
| Install An RSJ near Folkestone | £31 | £233 |
| Install An RSJ near Hythe | £31 | £228 |
| Install An RSJ near Canterbury | £31 | £232 |
| Install An RSJ near Margate | £27 | £208 |
| Install An RSJ near Ramsgate | £27 | £208 |
| Install An RSJ near Thanet | £27 | £208 |
| Install An RSJ near Broadstairs | £27 | £208 |
| Install An RSJ near Herne Bay | £28 | £213 |
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 - £17,116

Two storey extension - £87,424

Build a timber frame extension - £25,616

Build a swimming pool - £80,616

Single storey extension - £47,320

Side return extension - £37,180

Install an RSJ - £1,816

Outbuilding - £9,616

Build a Mansard loft conversion - £51,616

Loft conversion - £30,150

Build a kitchen extension - £41,616

Hip to gable loft conversion - £41,616

Granny annexe - £86,616

Garden office - £9,616

Convert a Garage - £15,616

Garage - £18,116

Build a flat roof extension - £21,616

Build a dormer loft conversion - £41,616

Concrete foundations - £5,866

Convert a bungalow loft - £28,616

Convert a basement - £33,180