From £87,240
I am a British Gas trained engineer with a vast knowledge of all gas, central heating, and plumbing systems. Now working independently, I provide i...
From £87,224
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,272
Need to find an Extension Builder near you for all your extension buildering work?
Asanta Builder provides a local, trusted extension build...
From £87,088
Need to find an Extension Builder near you for all your extension buildering work?
Go-Large Design & Build Ltd provides a local, trusted ex...
From £86,744
Need an Extension Builder in MK10? J&J Property Services has been helping local clients (20 mile radius) with their extension buildering jobs for m...
From £87,040
Trusted and professional extension builder in MK10. Experienced in all extension buildering work and keeping within budget and on quote. Langton Bu...
From £87,232
Our building services company Steve Miller Building Services have thirty-eight years’ experience and have been helping customers in Pagnell and t...
From £87,440
EXPERT BUILDING SERVICES is an established and experienced local extension builder in MK10. Please contact us for a free, no obligation quote and c...
From £87,152
Our building services company Dallcompanies Limited was established in May 2023, but have been helping customers in Milton Keynes and the surroundi...
From £87,416
BURCROFT BUILDERS is an established and experienced local extension builder in MK10. Please contact us for a free, no obligation quote and competit...

Building a granny annexe ranges from £86,744 (J&J Property Services based in MK14) to £87,440 (EXPERT BUILDING SERVICES based in MK17), 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 MK10 by posting a job with HaMuch. We will send it to extension builders in MK10 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Milton Keynes | £33 | £226 |
| Granny Annexe near Bletchley | £34 | £227 |
| Granny Annexe near Ampthill | £31 | £214 |
| Granny Annexe near Leighton Buzzard | £33 | £235 |
| Granny Annexe near Mid Bedfordshire | £34 | £225 |
| Granny Annexe near Kempston | £37 | £230 |
| Granny Annexe near South Bedfordshire | £38 | £233 |
| Granny Annexe near Bedford | £38 | £233 |
| Granny Annexe near Dunstable | £36 | £235 |
| Granny Annexe near Aylesbury Vale | £34 | £230 |
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 - £17,685

Two storey extension - £88,277

Build a timber frame extension - £26,185

Build a swimming pool - £81,185

Single storey extension - £58,696

Side return extension - £43,579

Install an RSJ - £2,385

Outbuilding - £10,185

Build a Mansard loft conversion - £52,185

Loft conversion - £35,483

Build a kitchen extension - £42,185

Hip to gable loft conversion - £42,185

Granny annexe - £87,185

Garden office - £10,185

Convert a Garage - £16,185

Garage - £18,685

Build a flat roof extension - £22,185

Build a dormer loft conversion - £42,185

Concrete foundations - £6,435

Convert a bungalow loft - £29,185

Convert a basement - £39,579