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 £2,376
Relax... you have found a reliable extension builder in CT1. Clint Construction is a friendly and reliable company based in CT1 who consider no job...
From £1,928
Osprey Property Repairs is a trusted extension builder serving customers in CT1 and the surrounding area. Contact us to today to get a competitive...
From £1,512
All building work , all hoyse maintenance. House extension and refurbishment works.
From £1,256
35 years in the trade can Lay bricks plaster roofing wall and floor tiling
From £2,400
Experienced extension builder ready to quote for your work. SEAN EVANS GENERAL BUILDER is the best extension builder in CT1. No obligation free quo...
From £2,072
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,160
I D S BUILDERS LIMITED is an established extension buildering business in CT1. We come highly recommended and provide competitive quotes for your w...
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,...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CT1 it ranges from £1,256 (S MEGSON CONSTRUCTION based in CT5) to £2,400 (SEAN EVANS GENERAL BUILDER based in ME10).
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 CT1 by posting a job with HaMuch and we will send it to extension builders in CT1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Canterbury | £31 | £232 |
| Install An RSJ near Whitstable | £28 | £214 |
| Install An RSJ near Herne Bay | £28 | £213 |
| Install An RSJ near Faversham | £34 | £235 |
| Install An RSJ near Swale | £35 | £241 |
| Install An RSJ near Thanet | £27 | £207 |
| Install An RSJ near Folkestone | £31 | £233 |
| Install An RSJ near Ashford | £36 | £256 |
| Install An RSJ near Deal | £26 | £199 |
| Install An RSJ near Hythe | £31 | £228 |
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 - £17,215

Two storey extension - £87,573

Build a timber frame extension - £25,715

Build a swimming pool - £80,715

Single storey extension - £49,304

Side return extension - £38,296

Install an RSJ - £1,915

Outbuilding - £9,715

Build a Mansard loft conversion - £51,715

Loft conversion - £31,080

Build a kitchen extension - £41,715

Hip to gable loft conversion - £41,715

Granny annexe - £86,715

Garden office - £9,715

Convert a Garage - £15,715

Garage - £18,215

Build a flat roof extension - £21,715

Build a dormer loft conversion - £41,715

Concrete foundations - £5,965

Convert a bungalow loft - £28,715

Convert a basement - £34,296