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Select your affordable Sovereign Harbour extension builder
ATLAS BUILDING AND MAINT are here to help customers who need an Extension Builder in Sovereign Harbour. We offer a competitive rate to complete all...
Experienced extension builder ready to quote for your work. CG Renovations Ltd is the best extension builder in Sovereign Harbour. No obligation fr...
Russell Channnon
At Templar Developments we work with our clients from thought to finish all the while keeping quality 110%. We cover all your construction needs on...
Need to find an Extension Builder near you for all your extension buildering work?
Heymann Builders Ltd provides a local, trusted extension...
Need to find an Extension Builder near you for all your extension buildering work?
S F CONSTRUCTION provides a local, trusted extension bu...
Need to find an Extension Builder near you for all your extension buildering work?
Gem Construction (Sussex) Ltd provides a local, trusted ...
Technique Roofing and Maintenance are here to help customers who need an Extension Builder in Sovereign Harbour. We offer a competitive rate to com...
BEAUTIFUL CONVERSIONS, RESTORATIONS AND NEW BUILDSPhoenix Design and Construction are a main contractor and builder delivering beautiful conversion...
From £1,680
Krzysztof Jankowski
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,016
Experienced extension builder ready to quote for your work. Razvan Building Services Ltd is the best extension builder in Sovereign Harbour. No obl...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Sovereign Harbour it ranges from £1,680 (Pro For You based in BN22) to £2,440 (CG Renovations Ltd based in BN23).
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 Sovereign Harbour by posting a job with HaMuch and we will send it to extension builders in Sovereign Harbour.
| 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 Bexhill-on-Sea | £31 | £243 |
| Install An RSJ near Seaford | £34 | £243 |
| Install An RSJ near Wealden | £35 | £256 |
| Install An RSJ near Hastings | £31 | £246 |
| Install An RSJ near Crowborough | £36 | £258 |
| Install An RSJ near Brighton and Hove | £35 | £252 |
| Install An RSJ near Brighton | £35 | £253 |
| Install An RSJ near Burgess Hill | £36 | £256 |
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 - £17,390

Two storey extension - £87,834

Build a timber frame extension - £25,890

Build a swimming pool - £80,890

Single storey extension - £52,792

Side return extension - £40,258

Install an RSJ - £2,090

Outbuilding - £9,890

Build a Mansard loft conversion - £51,890

Loft conversion - £32,715

Build a kitchen extension - £41,890

Hip to gable loft conversion - £41,890

Granny annexe - £86,890

Garden office - £9,890

Convert a Garage - £15,890

Garage - £18,390

Build a flat roof extension - £21,890

Build a dormer loft conversion - £41,890

Concrete foundations - £6,140

Convert a bungalow loft - £28,890

Convert a basement - £36,258