From £1,256
Whitstable, CT5
35 years in the trade can Lay bricks plaster roofing wall and floor tiling
From £1,752
Small family building business reliable friendly service and very high quality of works
From £2,240
\nMorgan and Smith was created in 2017 after seeing a gap in the market for a more personal service. Too often, we saw customers feeling disconnect...
From £2,264
Our building services company Gilson Construction have thirty years’ experience and have been helping customers in Kent and the surrounding area ...
From £2,120
Modularr is an established and experienced local extension builder in Whitstable. Please contact us for a free, no obligation quote and competitive...
From £2,088
Trusted and professional extension builder in Whitstable. Experienced in all extension buildering work and keeping within budget and on quote. SMB ...
From £1,960
I D Smith Construction Services Ltd is an established and experienced local extension builder in Whitstable. Please contact us for a free, no oblig...
From £2,008
Justin Collins Building Services are here to help customers who need an Extension Builder in Whitstable. We offer a competitive rate to complete al...
From £2,144
I have been working In home improvement and the Decorating services for around 30 years, experiencing high end work & clients and building up a rep...
From £2,080
J E P Marine is an established and experienced local extension builder in Whitstable. Please contact us for a free, no obligation quote and competi...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Whitstable it ranges from £1,256 (S MEGSON CONSTRUCTION based in CT5) to £2,264 (Gilson Construction based in CT6).
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 Whitstable by posting a job with HaMuch and we will send it to extension builders in Whitstable.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Whitstable | £28 | £214 |
| Install An RSJ near Herne Bay | £28 | £213 |
| Install An RSJ near Canterbury | £31 | £232 |
| Install An RSJ near Faversham | £34 | £235 |
| Install An RSJ near Swale | £35 | £241 |
| Install An RSJ near Sittingbourne | £35 | £246 |
| Install An RSJ near Thanet | £27 | £207 |
| Install An RSJ near Margate | £27 | £208 |
| Install An RSJ near Ramsgate | £27 | £208 |
| Install An RSJ near Ashford | £36 | £256 |
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 - £17,291

Two storey extension - £87,687

Build a timber frame extension - £25,791

Build a swimming pool - £80,791

Single storey extension - £50,824

Side return extension - £39,151

Install an RSJ - £1,991

Outbuilding - £9,791

Build a Mansard loft conversion - £51,791

Loft conversion - £31,793

Build a kitchen extension - £41,791

Hip to gable loft conversion - £41,791

Granny annexe - £86,791

Garden office - £9,791

Convert a Garage - £15,791

Garage - £18,291

Build a flat roof extension - £21,791

Build a dormer loft conversion - £41,791

Concrete foundations - £6,041

Convert a bungalow loft - £28,791

Convert a basement - £35,151