From £1,512
All building work , all hoyse maintenance. House extension and refurbishment works.
From £1,568
Need to find an Extension Builder near you for all your extension buildering work?
A-Pex Building provides a local, trusted extension build...
From £1,256
35 years in the trade can Lay bricks plaster roofing wall and floor tiling
From £1,856
At Wells & Co we offer a comprehensive building service. We specialise in Period properties, bespoke renovations and steel fabrication.Along with o...
From £2,024
Christian Builders Margate Ltd is a multi-service company founded by Nick Christian. We operate with a highly skilled team of designers, tradesmen,...
From £1,752
Small family building business reliable friendly service and very high quality of works
From £1,832
GDB CONSTRUCTION is a trusted extension builder serving customers in Westgate-on-sea and the surrounding area. Contact us to today to get a competi...
From £2,296
Need to find an Extension Builder near you for all your extension buildering work?
Fast Affordable Builders provides a local, trusted exten...
From £1,640
We been for almost 15 years in the building trade,
we are easy going and willing to work with our client and to archive the best r...
From £1,944
Need to find an Extension Builder near you for all your extension buildering work?
Bespoke building projects provides a local, trusted exte...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Westgate-on-sea it ranges from £1,256 (S MEGSON CONSTRUCTION based in CT5) to £2,296 (Fast Affordable Builders based in CT4).
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 Westgate-on-sea by posting a job with HaMuch and we will send it to extension builders in Westgate-on-sea.
"RSJ installation, knock internal walls down in kitchen" - CT9, job posted 01/01/70
"Extending already existing extension by about a meter with some loft windows, there’s already kitchen extension in place but I want to take it further to the other side, I can provide photos and examples" - CT1, job posted 08/01/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Thanet | £27 | £207 |
| Install An RSJ near Broadstairs | £27 | £208 |
| Install An RSJ near Margate | £27 | £208 |
| Install An RSJ near Ramsgate | £27 | £208 |
| Install An RSJ near Herne Bay | £28 | £213 |
| Install An RSJ near Deal | £26 | £199 |
| Install An RSJ near Canterbury | £31 | £232 |
| Install An RSJ near Whitstable | £28 | £214 |
| Install An RSJ near Dover | £29 | £226 |
| Install An RSJ near Faversham | £34 | £235 |
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 - £17,068

Two storey extension - £87,352

Build a timber frame extension - £25,568

Build a swimming pool - £80,568

Single storey extension - £46,360

Side return extension - £36,640

Install an RSJ - £1,768

Outbuilding - £9,568

Build a Mansard loft conversion - £51,568

Loft conversion - £29,700

Build a kitchen extension - £41,568

Hip to gable loft conversion - £41,568

Granny annexe - £86,568

Garden office - £9,568

Convert a Garage - £15,568

Garage - £18,068

Build a flat roof extension - £21,568

Build a dormer loft conversion - £41,568

Concrete foundations - £5,818

Convert a bungalow loft - £28,568

Convert a basement - £32,640