From £2,304
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in DH1. Please contact us for a free, no obligation quote and co...
From £3,112
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
From £1,960
Need an Extension Builder in DH1? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
From £2,200
Relax... you have found a reliable extension builder in DH1. AA Paving is a friendly and reliable company based in DH1 who consider no job as too b...
From £2,032
LJP Roofing are here to help customers who need an Extension Builder in DH1. We offer a competitive rate to complete all your extension buildering ...
From £1,360
We provide expert advice on building defects and cost effective environmental friendly solutions throughout the North East of England. Our bu...
From £2,032
Experienced extension builder ready to quote for your work. L F BUILDING & JOINERY is the best extension builder in DH1. No obligation free quotes ...
From £2,264
Croft-Hill Building & Joinery is a trusted extension builder serving customers in DH1 and the surrounding area. Contact us to today to get a compet...
From £2,008
Trusted and professional extension builder in DH1. Experienced in all extension buildering work and keeping within budget and on quote. DHB Builder...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in DH1 it ranges from £1,360 (Dry Tec based in DH6) to £3,112 (Radici Construction North East Ltd based in DH1).
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 DH1 by posting a job with HaMuch and we will send it to extension builders in DH1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Durham | £47 | £267 |
| Install An RSJ near Chester-le-Street | £35 | £242 |
| Install An RSJ near Spennymoor | £38 | £248 |
| Install An RSJ near Washington | £33 | £251 |
| Install An RSJ near Sunderland | £33 | £251 |
| Install An RSJ near Stanley | £34 | £242 |
| Install An RSJ near Seaham | £34 | £229 |
| Install An RSJ near Bishop Auckland | £39 | £247 |
| Install An RSJ near Peterlee | £35 | £222 |
| Install An RSJ near Newton Aycliffe | £39 | £227 |
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 - £17,474

Two storey extension - £87,960

Build a timber frame extension - £25,974

Build a swimming pool - £80,974

Single storey extension - £54,472

Side return extension - £41,203

Install an RSJ - £2,174

Outbuilding - £9,974

Build a Mansard loft conversion - £51,974

Loft conversion - £33,503

Build a kitchen extension - £41,974

Hip to gable loft conversion - £41,974

Granny annexe - £86,974

Garden office - £9,974

Convert a Garage - £15,974

Garage - £18,474

Build a flat roof extension - £21,974

Build a dormer loft conversion - £41,974

Concrete foundations - £6,224

Convert a bungalow loft - £28,974

Convert a basement - £37,203