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 £1,616
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...
From £2,376
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in Benfleet and the surrounding area. Contact us to today to get...
From £1,656
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in Benfleet. No obligation free quote...
From £2,472
P OUGHTON BUILDING is an established and experienced local extension builder in Benfleet. Please contact us for a free, no obligation quote and com...
From £2,360
Property Maintenance are here to help customers who need an Extension Builder in Benfleet. We offer a competitive rate to complete all your extensi...
From £2,560
Need an Extension Builder in Benfleet? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension builderi...
From £2,424
Dalls Construction Limited prides in delivering an excellent extension buildering service and value for money in Benfleet and the surrounding areas...
From £2,208
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Benfleet it ranges from £1,616 (RTC Plumbers based in RM6) 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 Benfleet by posting a job with HaMuch and we will send it to extension builders in Benfleet.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Thundersley | £38 | £251 |
| Install An RSJ near Rayleigh | £39 | £252 |
| Install An RSJ near Canvey Island | £39 | £256 |
| Install An RSJ near Basildon | £39 | £251 |
| Install An RSJ near Wickford | £39 | £255 |
| Install An RSJ near Southend-on-Sea | £37 | £247 |
| Install An RSJ near Stanford-le-Hope | £40 | £254 |
| Install An RSJ near Billericay | £38 | £248 |
| Install An RSJ near Thurrock | £41 | £260 |
| Install An RSJ near Brentwood | £39 | £255 |
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 - £17,654

Two storey extension - £88,232

Build a timber frame extension - £26,154

Build a swimming pool - £81,154

Single storey extension - £58,088

Side return extension - £43,237

Install an RSJ - £2,354

Outbuilding - £10,154

Build a Mansard loft conversion - £52,154

Loft conversion - £35,198

Build a kitchen extension - £42,154

Hip to gable loft conversion - £42,154

Granny annexe - £87,154

Garden office - £10,154

Convert a Garage - £16,154

Garage - £18,654

Build a flat roof extension - £22,154

Build a dormer loft conversion - £42,154

Concrete foundations - £6,404

Convert a bungalow loft - £29,154

Convert a basement - £39,237