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Select an affordable extension builder
Operating across Yorkshire and offering all joinery works to suit your needs, we can beat any genuine quote. Our commitment to craftsmanship ensure...
From £17,636
Experienced in Interiors, products, furniture, styling, environment, Design for manufacture, Concept Design.
From £16,692
T & B Builders is an established extension buildering business in WF12. We come highly recommended and provide competitive quotes for your work.
From £17,228
Steve Blakeley
STEVE BLAKELEY BUILDERS LTD are here to help customers who need an Extension Builder in WF12. We offer a competitive rate to complete all your exte...
From £17,508
Bee brand designs is a trusted extension builder serving customers in WF12 and the surrounding area. Contact us to today to get a competitive quote...
From £17,436
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,564
Experienced extension builder ready to quote for your work. west yorkshire plumbing and heating services ltd is the best extension builder in WF12....
From £17,436
Need an Extension Builder in WF12? Paragon Oak Ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...

Underpinning ranges from £16,692 (T & B Builders based in WF17) to £17,636 (Bee brand designs based in wf12), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in WF12 by posting a job with HaMuch and we will send it to extension builders in WF12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Dewsbury | £33 | £245 |
| Underpin A Building near Ossett | £33 | £245 |
| Underpin A Building near Batley | £32 | £239 |
| Underpin A Building near Mirfield | £31 | £236 |
| Underpin A Building near Morley | £31 | £239 |
| Underpin A Building near Wakefield | £31 | £240 |
| Underpin A Building near Brighouse | £30 | £230 |
| Underpin A Building near Beeston | £31 | £236 |
| Underpin A Building near Huddersfield | £29 | £224 |
| Underpin A Building near Pudsey | £30 | £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 - £17,380

Two storey extension - £87,820

Build a timber frame extension - £25,880

Build a swimming pool - £80,880

Single storey extension - £52,600

Side return extension - £40,150

Install an RSJ - £2,080

Outbuilding - £9,880

Build a Mansard loft conversion - £51,880

Loft conversion - £32,625

Build a kitchen extension - £41,880

Hip to gable loft conversion - £41,880

Granny annexe - £86,880

Garden office - £9,880

Convert a Garage - £15,880

Garage - £18,380

Build a flat roof extension - £21,880

Build a dormer loft conversion - £41,880

Concrete foundations - £6,130

Convert a bungalow loft - £28,880

Convert a basement - £36,150