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Select your affordable Knottingley extension builder
M C BUILDER (YORKSHIRE) LTD is an established extension buildering business in Knottingley. We come highly recommended and provide competitive quot...
NSB is a trusted extension builder serving customers in Knottingley and the surrounding area. Contact us to today to get a competitive quote for ex...
From £86,704
ANDY HARDEMAN
Knottingley, WF11
Need to find an Extension Builder near you for all your extension buildering work?
Ashdaleconstruction provides a local, trusted extension ...
From £86,776
Graham Kirkaldy
I've been in the trade over 25 years working on commercial and domestic high end properties
From £86,728
Need an Extension Builder in Knottingley? The Poured Project Ltd has been helping local clients (20 mile radius) with their extension buildering jo...
From £86,920
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,088
The Yorkshire Lime Company Ltd is an established and experienced local extension builder in Knottingley. Please contact us for a free, no obligatio...
From £86,696
D Noble Limited Building And Civil Engineering Contracts is an established extension buildering business in Knottingley. We come highly recommended...
From £86,584
Experienced extension builder ready to quote for your work. Noble Homes is the best extension builder in Knottingley. No obligation free quotes and...
From £87,032
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,584 (Noble Homes based in WF10) to £87,088 (The Yorkshire Lime Company Ltd based in WF10), 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 - £17,332

Two storey extension - £87,748

Build a timber frame extension - £25,832

Build a swimming pool - £80,832

Single storey extension - £51,640

Side return extension - £39,610

Install an RSJ - £2,032

Outbuilding - £9,832

Build a Mansard loft conversion - £51,832

Loft conversion - £32,175

Build a kitchen extension - £41,832

Hip to gable loft conversion - £41,832

Granny annexe - £86,832

Garden office - £9,832

Convert a Garage - £15,832

Garage - £18,332

Build a flat roof extension - £21,832

Build a dormer loft conversion - £41,832

Concrete foundations - £6,082

Convert a bungalow loft - £28,832

Convert a basement - £35,610