From £2,008
Need to find an Extension Builder near you for all your extension buildering work?
DINNAGE BUILDERS provides a local, trusted extension bui...
From £1,960
Experienced extension builder ready to quote for your work. M Hone Brickwork is the best extension builder in BN26. No obligation free quotes and m...
From £2,280
Relax... you have found a reliable extension builder in BN26. Hammonds Toon Design is a friendly and reliable company based in BN26 who consider no...
From £1,944
Need to find an Extension Builder near you for all your extension buildering work?
Colbran & Wingrove Building Contractors provides a local...
From £2,744
I have been in business for thirty eight year
I am a very good tradesmen and I am always
busy, I am a member of c...
From £1,888
Family run builders with high standards of workmanship and customer service, trading standards approved.
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 £2,032
Experienced extension builder ready to quote for your work. Mann Roofing is the best extension builder in BN26. No obligation free quotes and many ...
From £2,056
Need to find an Extension Builder near you for all your extension buildering work?
BUILDERS OF SUSSEX LTD provides a local, trusted extensi...
From £2,048
Firestone Roofing Specialists is a trusted extension builder serving customers in BN26 and the surrounding area. Contact us to today to get a compe...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BN26 it ranges from £1,888 (Homecare Building Maintenance based in BN22) to £2,744 (Angels Roofing based in BN27).
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 BN26 by posting a job with HaMuch and we will send it to extension builders in BN26.
| 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 Wealden | £35 | £256 |
| Install An RSJ near Bexhill-on-Sea | £31 | £243 |
| Install An RSJ near Brighton and Hove | £35 | £251 |
| Install An RSJ near Brighton | £35 | £251 |
| Install An RSJ near Hastings | £31 | £246 |
| 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 - £17,392

Two storey extension - £87,838

Build a timber frame extension - £25,892

Build a swimming pool - £80,892

Single storey extension - £52,840

Side return extension - £40,285

Install an RSJ - £2,092

Outbuilding - £9,892

Build a Mansard loft conversion - £51,892

Loft conversion - £32,738

Build a kitchen extension - £41,892

Hip to gable loft conversion - £41,892

Granny annexe - £86,892

Garden office - £9,892

Convert a Garage - £15,892

Garage - £18,392

Build a flat roof extension - £21,892

Build a dormer loft conversion - £41,892

Concrete foundations - £6,142

Convert a bungalow loft - £28,892

Convert a basement - £36,285