From £2,216
Trusted and professional extension builder in Old Town. Experienced in all extension buildering work and keeping within budget and on quote. Good C...
From £2,192
Experienced extension builder ready to quote for your work. Brighton Marina Hand Car Wash is the best extension builder in Old Town. No obligation ...
From £2,272
Relax... you have found a reliable extension builder in Old Town. R & G Construction Brighton Ltd is a friendly and reliable company based in Old T...
From £1,968
Experienced extension builder ready to quote for your work. Graeme Davies Plumbing and Heating is the best extension builder in Old Town. No obliga...
From £2,296
Need to find an Extension Builder near you for all your extension buildering work?
The Sussex Bookcase Company provides a local, trusted ex...
From £3,320
Experienced extension builder ready to quote for your work. CITY BUILDING SERVICES LIMITED is the best extension builder in Old Town. No obligation...
From £1,944
Relax... you have found a reliable extension builder in Old Town. Ljo Brickwork, Landscapes and General Building is a friendly and reliable company...
From £1,960
Need to find an Extension Builder near you for all your extension buildering work?
S F CONSTRUCTION provides a local, trusted extension bu...
From £2,056
Citadel Construction is an established extension buildering business in Old Town. We come highly recommended and provide competitive quotes for you...
From £1,968
Master builder since 1960 new build and refurb all trades many photo albums to show

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Old Town it ranges from £1,944 (Ljo Brickwork, Landscapes and General Building based in TN38) to £3,320 (CITY BUILDING SERVICES LIMITED based in BN2).
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 Old Town by posting a job with HaMuch and we will send it to extension builders in Old Town.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Eastbourne | £32 | £245 |
| Install An RSJ near Hailsham | £31 | £243 |
| Install An RSJ near Seaford | £34 | £243 |
| Install An RSJ near Bexhill-on-Sea | £31 | £243 |
| Install An RSJ near Wealden | £35 | £256 |
| Install An RSJ near Hastings | £31 | £246 |
| Install An RSJ near Brighton and Hove | £35 | £251 |
| Install An RSJ near Brighton | £35 | £251 |
| Install An RSJ near Crowborough | £36 | £258 |
| Install An RSJ near Burgess Hill | £36 | £240 |
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 - £17,519

Two storey extension - £88,029

Build a timber frame extension - £26,019

Build a swimming pool - £81,019

Single storey extension - £55,384

Side return extension - £41,716

Install an RSJ - £2,219

Outbuilding - £10,019

Build a Mansard loft conversion - £52,019

Loft conversion - £33,930

Build a kitchen extension - £42,019

Hip to gable loft conversion - £42,019

Granny annexe - £87,019

Garden office - £10,019

Convert a Garage - £16,019

Garage - £18,519

Build a flat roof extension - £22,019

Build a dormer loft conversion - £42,019

Concrete foundations - £6,269

Convert a bungalow loft - £29,019

Convert a basement - £37,716