From £2,232
Monarch Builders South East Ltd is an established and experienced local extension builder in CT8. Please contact us for a free, no obligation quote...
From £1,512
All building work , all hoyse maintenance. House extension and refurbishment works.
From £1,832
GDB CONSTRUCTION is a trusted extension builder serving customers in CT8 and the surrounding area. Contact us to today to get a competitive quote f...
From £2,128
Teekay solutions Limited is an established and experienced local extension builder in CT8. Please contact us for a free, no obligation quote and co...
From £1,704
Christian Builders Margate Ltd is an established and experienced local extension builder in CT8. Please contact us for a free, no obligation quote ...
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 £1,800
Relax... you have found a reliable extension builder in CT8. Paragon Stone Design is a friendly and reliable company based in CT8 who consider no j...
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...
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...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CT8 it ranges from £1,512 (B H G M Ltd based in CT7) to £2,232 (Monarch Builders South East Ltd based in CT9).
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 CT8 by posting a job with HaMuch and we will send it to extension builders in CT8.
"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 - £17,167

Two storey extension - £87,501

Build a timber frame extension - £25,667

Build a swimming pool - £80,667

Single storey extension - £48,344

Side return extension - £37,756

Install an RSJ - £1,867

Outbuilding - £9,667

Build a Mansard loft conversion - £51,667

Loft conversion - £30,630

Build a kitchen extension - £41,667

Hip to gable loft conversion - £41,667

Granny annexe - £86,667

Garden office - £9,667

Convert a Garage - £15,667

Garage - £18,167

Build a flat roof extension - £21,667

Build a dormer loft conversion - £41,667

Concrete foundations - £5,917

Convert a bungalow loft - £28,667

Convert a basement - £33,756