From £2,456
Southend-on-Sea, SS2
Need an Extension Builder in Southend-on-sea? Essex Building Solutions has been helping local clients (20 mile radius) with their extension builder...
From £2,176
Anglian Preservation is an established and experienced local extension builder in Southend-on-sea. Please contact us for a free, no obligation quot...
From £2,368
Need to find an Extension Builder near you for all your extension buildering work?
Wrights Building Services provides a local, trusted exte...
From £2,232
Providing property maintenance, refurbishments, kitchens and bathrooms in the South East and South West of England.We are able to undertake...
From £2,048
Livinston & Son Ltd are here to help customers who need an Extension Builder in Southend-on-sea. We offer a competitive rate to complete all your e...
From £2,352
Experienced extension builder ready to quote for your work. House Q Ltd is the best extension builder in Southend-on-sea. No obligation free quotes...
From £2,200
Need an Extension Builder in Southend-on-sea? Castle Point Construction has been helping local clients (20 mile radius) with their extension builde...
From £1,976
Relax... you have found a reliable extension builder in Southend-on-sea. Old2New Projects is a friendly and reliable company based in Southend-on-s...
From £2,056
Experienced extension builder ready to quote for your work. FILO interiors is the best extension builder in Southend-on-sea. No obligation free quo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Southend-on-sea it ranges from £1,976 (Old2New Projects based in SS0) to £2,456 (Essex Building Solutions based in SS2).
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 Southend-on-sea by posting a job with HaMuch and we will send it to extension builders in Southend-on-sea.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Southend-on-Sea | £37 | £247 |
| 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 Wickford | £39 | £255 |
| Install An RSJ near Basildon | £39 | £251 |
| Install An RSJ near Stanford-le-Hope | £40 | £254 |
| Install An RSJ near Billericay | £38 | £248 |
| Install An RSJ near Gillingham | £39 | £253 |
| Install An RSJ near Maldon | £36 | £244 |
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 - £17,489

Two storey extension - £87,983

Build a timber frame extension - £25,989

Build a swimming pool - £80,989

Single storey extension - £54,776

Side return extension - £41,374

Install an RSJ - £2,189

Outbuilding - £9,989

Build a Mansard loft conversion - £51,989

Loft conversion - £33,645

Build a kitchen extension - £41,989

Hip to gable loft conversion - £41,989

Granny annexe - £86,989

Garden office - £9,989

Convert a Garage - £15,989

Garage - £18,489

Build a flat roof extension - £21,989

Build a dormer loft conversion - £41,989

Concrete foundations - £6,239

Convert a bungalow loft - £28,989

Convert a basement - £37,374