From £1,936
Folkestone, CT19
Need an Extension Builder in Folkestone? M LONG T/A MJ BUILDINGS has been helping local clients (20 mile radius) with their extension buildering jo...
From £1,976
Tom Clark - Raison Home UK is a trusted extension builder serving customers in Folkestone and the surrounding area. Contact us to today to get a co...
From £2,136
Experienced extension builder ready to quote for your work. THE EAST CLIFF BUILDING CO LTD is the best extension builder in Folkestone. No obligati...
From £1,864
Pentland Homes is an established extension buildering business in Folkestone. We come highly recommended and provide competitive quotes for your wo...
From £1,944
Trusted and professional extension builder in Folkestone. Experienced in all extension buildering work and keeping within budget and on quote. Stad...
From £2,040
Trusted and professional extension builder in Folkestone. Experienced in all extension buildering work and keeping within budget and on quote. Spri...
From £1,856
John Nicoll trained as a joiner and carpenter in St Andrew's, Fife. For over 30 years, he has been operating in the London area - setting up 5 Ways...
From £2,016
Relax... you have found a reliable extension builder in Folkestone. LEVEL CONSTRUCTION is a friendly and reliable company based in Folkestone who ...
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 £2,024
Relax... you have found a reliable extension builder in Folkestone. Cosbuild and Maintenance ltd is a friendly and reliable company based in Folkes...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Folkestone it ranges from £1,568 (A-Pex Building based in CT17) to £2,136 (THE EAST CLIFF BUILDING CO LTD based in CT18).
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 Folkestone by posting a job with HaMuch and we will send it to extension builders in Folkestone.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Folkestone | £31 | £233 |
| Install An RSJ near Hythe | £31 | £228 |
| Install An RSJ near Dover | £29 | £226 |
| Install An RSJ near Deal | £26 | £199 |
| Install An RSJ near Canterbury | £31 | £232 |
| Install An RSJ near Ashford | £36 | £256 |
| Install An RSJ near Faversham | £34 | £235 |
| Install An RSJ near Herne Bay | £28 | £213 |
| Install An RSJ near Whitstable | £28 | £214 |
| Install An RSJ near Margate | £27 | £208 |
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 - £17,236

Two storey extension - £87,604

Build a timber frame extension - £25,736

Build a swimming pool - £80,736

Single storey extension - £49,720

Side return extension - £38,530

Install an RSJ - £1,936

Outbuilding - £9,736

Build a Mansard loft conversion - £51,736

Loft conversion - £31,275

Build a kitchen extension - £41,736

Hip to gable loft conversion - £41,736

Granny annexe - £86,736

Garden office - £9,736

Convert a Garage - £15,736

Garage - £18,236

Build a flat roof extension - £21,736

Build a dormer loft conversion - £41,736

Concrete foundations - £5,986

Convert a bungalow loft - £28,736

Convert a basement - £34,530