From £86,944
Need an Extension Builder in Knottingley? D & D Builders has been helping local clients (20 mile radius) with their extension buildering jobs for m...
From £86,920
Experienced extension builder ready to quote for your work. J W Building Services is the best extension builder in Knottingley. No obligation free ...
From £86,832
Need an Extension Builder in Knottingley? Watertight Roofing Leeds has been helping local clients (20 mile radius) with their extension buildering ...
From £86,840
Need to find an Extension Builder near you for all your extension buildering work?
full circle garden and design provides a local, trusted ...
From £86,632
Trusted and professional extension builder in Knottingley. Experienced in all extension buildering work and keeping within budget and on quote. Fea...
From £86,808
Trusted and professional extension builder in Knottingley. Experienced in all extension buildering work and keeping within budget and on quote. NE ...
From £86,864
DAVID HARRISON BUILDING are here to help customers who need an Extension Builder in Knottingley. We offer a competitive rate to complete all your e...
From £87,064
Prestine Property Maintenance Services is an established and experienced local extension builder in Knottingley. Please contact us for a free, no o...
From £86,816
Trusted and professional extension builder in Knottingley. Experienced in all extension buildering work and keeping within budget and on quote. Gar...
From £86,816
SJL Construction is a trusted extension builder serving customers in Knottingley and the surrounding area. Contact us to today to get a competitive...

Building a granny annexe ranges from £86,632 (Fearnville Driveways based in LS8) to £87,064 (Prestine Property Maintenance Services based in YO8), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Knottingley by posting a job with HaMuch. We will send it to extension builders in Knottingley who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Pontefract | £30 | £228 |
| Granny Annexe near Castleford | £30 | £225 |
| Granny Annexe near Normanton | £30 | £233 |
| Granny Annexe near Rothwell | £30 | £230 |
| Granny Annexe near Selby | £30 | £240 |
| Granny Annexe near Wakefield | £31 | £240 |
| Granny Annexe near Beeston | £31 | £236 |
| Granny Annexe near Goole | £26 | £217 |
| Granny Annexe near Ossett | £33 | £245 |
| Granny Annexe near Chapeltown | £30 | £232 |
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 - £17,354

Two storey extension - £87,780

Build a timber frame extension - £25,854

Build a swimming pool - £80,854

Single storey extension - £52,072

Side return extension - £39,853

Install an RSJ - £2,054

Outbuilding - £9,854

Build a Mansard loft conversion - £51,854

Loft conversion - £32,378

Build a kitchen extension - £41,854

Hip to gable loft conversion - £41,854

Granny annexe - £86,854

Garden office - £9,854

Convert a Garage - £15,854

Garage - £18,354

Build a flat roof extension - £21,854

Build a dormer loft conversion - £41,854

Concrete foundations - £6,104

Convert a bungalow loft - £28,854

Convert a basement - £35,853