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Our building services company Dallcompanies Limited was established in May 2023, but have been helping customers in Milton Keynes and the surroundi...
Need an Extension Builder in MK14? Highland Homes & Gardens has been helping local clients (20 mile radius) with their extension buildering jobs fo...
Trusted and professional extension builder in MK14. Experienced in all extension buildering work and keeping within budget and on quote. Langton Bu...
Relax... you have found a reliable extension builder in MK14. Dean Prichard Building Services is a friendly and reliable company based in MK14 who ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
Asanta Builder provides a local, trusted extension build...
Need to find an Extension Builder near you for all your extension buildering work?
Go-Large Design & Build Ltd provides a local, trusted ex...
Need an Extension Builder in MK14? D Catt Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
John Addis
Our building services company JAB Home Improvements helps customers in Milton Keynes and the surrounding area by providing professional, trustworth...

Building a granny annexe ranges from £86,848 (Highland Homes & Gardens based in MK4) to £87,496 (JAB based in MK4), 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 MK14 by posting a job with HaMuch. We will send it to extension builders in MK14 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Milton Keynes | £39 | £263 |
| Granny Annexe near Bletchley | £39 | £265 |
| Granny Annexe near Leighton Buzzard | £38 | £270 |
| Granny Annexe near Ampthill | £38 | £258 |
| Granny Annexe near Kempston | £44 | £273 |
| Granny Annexe near Mid Bedfordshire | £42 | £276 |
| Granny Annexe near Aylesbury Vale | £36 | £246 |
| Granny Annexe near Bedford | £45 | £278 |
| Granny Annexe near South Bedfordshire | £45 | £278 |
| Granny Annexe near Northampton | £35 | £239 |
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 - £17,594

Two storey extension - £88,142

Build a timber frame extension - £26,094

Build a swimming pool - £81,094

Single storey extension - £56,888

Side return extension - £42,562

Install an RSJ - £2,294

Outbuilding - £10,094

Build a Mansard loft conversion - £52,094

Loft conversion - £34,635

Build a kitchen extension - £42,094

Hip to gable loft conversion - £42,094

Granny annexe - £87,094

Garden office - £10,094

Convert a Garage - £16,094

Garage - £18,594

Build a flat roof extension - £22,094

Build a dormer loft conversion - £42,094

Concrete foundations - £6,344

Convert a bungalow loft - £29,094

Convert a basement - £38,562