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Select your affordable Knaresborough extension builder
Need to find an Extension Builder near you for all your extension buildering work?
Extra Space Developments Ltd provides a local, trusted e...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in Knaresborough. Rob Brumfitt Dry Stone Walling is a friendly and reliable company based in K...
Experienced extension builder ready to quote for your work. Fellbrook Builders is the best extension builder in Knaresborough. No obligation free q...
Knaresborough, HG5
Need to find an Extension Builder near you for all your extension buildering work?
ARORA CONSTRUCTION LIMITED provides a local, trusted ext...
Relax... you have found a reliable extension builder in Knaresborough. Homebuild ltd is a friendly and reliable company based in Knaresborough who ...
Andrew Marshall
Need to find an Extension Builder near you for all your extension buildering work?
A MARSHALL provides a local, trusted extension builderin...
We are a part of the award-winning Refresh Renovation franchise network.Perhaps you want to freshen up the décor in your Victorian townhouse, or y...
From £1,984
Bayley Heritage Building is a trusted extension builder serving customers in Knaresborough and the surrounding area. Contact us to today to get a c...
From £1,792
Gary Hudson
Need an Extension Builder in Knaresborough? G Hudson Roofing Ltd has been helping local clients (20 mile radius) with their extension buildering jo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Knaresborough it ranges from £1,792 (G Hudson Roofing Ltd based in HG1) to £2,120 (Rob Brumfitt Dry Stone Walling based in HG1).
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 Knaresborough by posting a job with HaMuch and we will send it to extension builders in Knaresborough.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Harrogate | £29 | £225 |
| Install An RSJ near Chapeltown | £30 | £232 |
| Install An RSJ near Leeds | £31 | £236 |
| Install An RSJ near York | £30 | £229 |
| Install An RSJ near Beeston | £31 | £236 |
| Install An RSJ near Pudsey | £30 | £227 |
| Install An RSJ near Shipley | £29 | £226 |
| Install An RSJ near Rothwell | £30 | £230 |
| Install An RSJ near Bingley | £30 | £229 |
| Install An RSJ near Bradford | £29 | £225 |
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 - £17,269

Two storey extension - £87,653

Build a timber frame extension - £25,769

Build a swimming pool - £80,769

Single storey extension - £50,376

Side return extension - £38,899

Install an RSJ - £1,969

Outbuilding - £9,769

Build a Mansard loft conversion - £51,769

Loft conversion - £31,583

Build a kitchen extension - £41,769

Hip to gable loft conversion - £41,769

Granny annexe - £86,769

Garden office - £9,769

Convert a Garage - £15,769

Garage - £18,269

Build a flat roof extension - £21,769

Build a dormer loft conversion - £41,769

Concrete foundations - £6,019

Convert a bungalow loft - £28,769

Convert a basement - £34,899