Mayfair developers have been in the construction industry for over a decade. Our passion is to transform old spaces into new usable homes for our c...
Sittingbourne, ME10
Experienced extension builder ready to quote for your work. SEAN EVANS GENERAL BUILDER is the best extension builder in Sittingbourne. No obligatio...
Sittingbourne, ME10
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Sittingbourne, ME9
I D S BUILDERS LIMITED is an established extension buildering business in Sittingbourne. We come highly recommended and provide competitive quotes ...
J E P Marine is an established and experienced local extension builder in Sittingbourne. Please contact us for a free, no obligation quote and comp...
Relax... you have found a reliable extension builder in Sittingbourne. BDC Construction South East Ltd is a friendly and reliable company based in ...
Justin Collins Building Services are here to help customers who need an Extension Builder in Sittingbourne. We offer a competitive rate to complete...
Sittingbourne, ME9
Need to find an Extension Builder near you for all your extension buildering work?
Pride Property Maintenance provides a local, trusted ext...
Carter Roofing is a trusted extension builder serving customers in Sittingbourne and the surrounding area. Contact us to today to get a competitive...
From £2,168
Daniel Wilson
Sittingbourne, ME10
D.E Wilson Builder Restoration & Refurbishment is an established extension buildering business in Sittingbourne. We come highly recommended and pro...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Sittingbourne it ranges from £2,008 (Justin Collins Building Services based in ME13) to £2,528 (Mayfair Developers ltd based in ME8).
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 Sittingbourne by posting a job with HaMuch and we will send it to extension builders in Sittingbourne.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Sittingbourne | £35 | £246 |
| Install An RSJ near Swale | £35 | £241 |
| Install An RSJ near Faversham | £34 | £235 |
| Install An RSJ near Gillingham | £39 | £253 |
| Install An RSJ near Chatham | £39 | £254 |
| Install An RSJ near Rochester | £39 | £254 |
| Install An RSJ near Maidstone | £40 | £255 |
| Install An RSJ near Larkfield | £41 | £253 |
| Install An RSJ near Whitstable | £28 | £214 |
| Install An RSJ near Canvey Island | £39 | £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 - £17,522

Two storey extension - £88,034

Build a timber frame extension - £26,022

Build a swimming pool - £81,022

Single storey extension - £55,448

Side return extension - £41,752

Install an RSJ - £2,222

Outbuilding - £10,022

Build a Mansard loft conversion - £52,022

Loft conversion - £33,960

Build a kitchen extension - £42,022

Hip to gable loft conversion - £42,022

Granny annexe - £87,022

Garden office - £10,022

Convert a Garage - £16,022

Garage - £18,522

Build a flat roof extension - £22,022

Build a dormer loft conversion - £42,022

Concrete foundations - £6,272

Convert a bungalow loft - £29,022

Convert a basement - £37,752