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Experienced extension builder ready to quote for your work. WDC LTD T/A is the best extension builder in Thundersley. No obligation free quotes and...
Livinston & Son Ltd are here to help customers who need an Extension Builder in Thundersley. We offer a competitive rate to complete all your exten...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Anglian Preservation is an established and experienced local extension builder in Thundersley. Please contact us for a free, no obligation quote an...
Frederick Head
Over 35 years experience
We are Gas Safe registered
We are Verified
We pride ourselves on great custom...
Darren Spencer
Need an Extension Builder in Thundersley? Ellis & James Builders Limited has been helping local clients (20 mile radius) with their extension build...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Witton & Pearce Builders in Essex is a trusted extension builder serving customers in Thundersley and the surrounding area. Contact us to today to ...
Billy Baverstock
Experienced extension builder ready to quote for your work. Capital Roofing Ltd is the best extension builder in Thundersley. No obligation free qu...
Property Maintenance are here to help customers who need an Extension Builder in Thundersley. We offer a competitive rate to complete all your exte...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Thundersley it ranges from £1,656 (Capital Roofing Ltd based in SS13) to £2,560 (Ellis & James Builders Limited based in SS17).
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 Thundersley by posting a job with HaMuch and we will send it to extension builders in Thundersley.
| 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 Wickford | £39 | £255 |
| Install An RSJ near Basildon | £39 | £251 |
| 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 Brentwood | £39 | £255 |
| Install An RSJ near Thurrock | £41 | £260 |
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 - £17,544

Two storey extension - £88,066

Build a timber frame extension - £26,044

Build a swimming pool - £81,044

Single storey extension - £55,880

Side return extension - £41,995

Install an RSJ - £2,244

Outbuilding - £10,044

Build a Mansard loft conversion - £52,044

Loft conversion - £34,163

Build a kitchen extension - £42,044

Hip to gable loft conversion - £42,044

Granny annexe - £87,044

Garden office - £10,044

Convert a Garage - £16,044

Garage - £18,544

Build a flat roof extension - £22,044

Build a dormer loft conversion - £42,044

Concrete foundations - £6,294

Convert a bungalow loft - £29,044

Convert a basement - £37,995