We send your job to ALL Boston Spa extension builders
Available extension builders in Boston Spa reply
Select your affordable Boston Spa extension builder
Trusted and professional extension builder in Boston Spa. Experienced in all extension buildering work and keeping within budget and on quote. Fear...
David Clayden
I am a building contracer with 30 years experience apprentice trained taking pride in my work
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 £1,864
Philip Gott
Experienced extension builder ready to quote for your work. AMG Design & Build is the best extension builder in Boston Spa. No obligation free quot...
From £1,872
Trusted and professional extension builder in Boston Spa. Experienced in all extension buildering work and keeping within budget and on quote. Atla...
From £1,960
Ashdale Projects Ltd is a trusted extension builder serving customers in Boston Spa and the surrounding area. Contact us to today to get a competit...
From £1,984
Experienced extension builder ready to quote for your work. Earlswood Construction Ltd is the best extension builder in Boston Spa. No obligation f...
From £1,944
Experienced extension builder ready to quote for your work. Future Roofs York Ltd T/A Future Roofs is the best extension builder in Boston Spa. No ...
From £2,144
We are a Leeds based design and build building and property development firm. We specialize in property renovation/restoration, but also have much ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Boston Spa it ranges from £1,832 (Fearnville Driveways based in LS8) to £2,144 (Zia Developments based in LS17).
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 Boston Spa by posting a job with HaMuch and we will send it to extension builders in Boston Spa.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Chapeltown | £30 | £232 |
| Install An RSJ near Harrogate | £29 | £225 |
| Install An RSJ near Leeds | £31 | £236 |
| Install An RSJ near Rothwell | £30 | £230 |
| Install An RSJ near York | £30 | £229 |
| Install An RSJ near Beeston | £31 | £236 |
| Install An RSJ near Castleford | £30 | £225 |
| Install An RSJ near Normanton | £30 | £233 |
| Install An RSJ near Pudsey | £30 | £227 |
| Install An RSJ near Selby | £30 | £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 - £17,261

Two storey extension - £87,641

Build a timber frame extension - £25,761

Build a swimming pool - £80,761

Single storey extension - £50,218

Side return extension - £38,810

Install an RSJ - £1,961

Outbuilding - £9,761

Build a Mansard loft conversion - £51,761

Loft conversion - £31,508

Build a kitchen extension - £41,761

Hip to gable loft conversion - £41,761

Granny annexe - £86,761

Garden office - £9,761

Convert a Garage - £15,761

Garage - £18,261

Build a flat roof extension - £21,761

Build a dormer loft conversion - £41,761

Concrete foundations - £6,011

Convert a bungalow loft - £28,761

Convert a basement - £34,810