From £2,080
Experienced extension builder ready to quote for your work. CIA Construction Limited is the best extension builder in ME3. No obligation free quote...
From £2,264
Hyde Building Ltd are here to help customers who need an Extension Builder in ME3. We offer a competitive rate to complete all your extension build...
From £2,560
Need an Extension Builder in ME3? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension buildering jo...
From £2,208
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...
From £2,816
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in ME3 and the surrounding area. Contact us to today to get a comp...
From £2,440
M&J Brickwork Ltd are a Chelmsford based Bricklaying & General Building company that operate throughout the Essex and South London...
From £3,432
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
From £2,416
Experienced extension builder ready to quote for your work. Liviu Toma is the best extension builder in ME3. No obligation free quotes and many hap...
From £2,456
Lover Build is an established and experienced local extension builder in ME3. Please contact us for a free, no obligation quote and competitive rat...
From £2,376
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in ME3 and the surrounding area. Contact us to today to get a co...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in ME3 it ranges from £2,080 (CIA Construction Limited based in RM18) to £3,432 (Optimus Build Solutions based in Rm1).
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 ME3 by posting a job with HaMuch and we will send it to extension builders in ME3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Chatham | £39 | £254 |
| Install An RSJ near Gillingham | £39 | £253 |
| Install An RSJ near Rochester | £39 | £254 |
| Install An RSJ near Canvey Island | £39 | £256 |
| Install An RSJ near Gravesend | £40 | £260 |
| Install An RSJ near Stanford-le-Hope | £40 | £254 |
| Install An RSJ near Northfleet | £41 | £261 |
| Install An RSJ near Thurrock | £41 | £260 |
| Install An RSJ near Thundersley | £38 | £251 |
| Install An RSJ near Chafford Hundred | £41 | £261 |
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 - £17,805

Two storey extension - £88,457

Build a timber frame extension - £26,305

Build a swimming pool - £81,305

Single storey extension - £61,096

Side return extension - £44,929

Install an RSJ - £2,505

Outbuilding - £10,305

Build a Mansard loft conversion - £52,305

Loft conversion - £36,608

Build a kitchen extension - £42,305

Hip to gable loft conversion - £42,305

Granny annexe - £87,305

Garden office - £10,305

Convert a Garage - £16,305

Garage - £18,805

Build a flat roof extension - £22,305

Build a dormer loft conversion - £42,305

Concrete foundations - £6,555

Convert a bungalow loft - £29,305

Convert a basement - £40,929