From £87,248
Hyatt and Co Building Services was established over 20 years ago and have been providing customers in Milton Keynes and the surrounding areas a pro...
From £87,232
Relax... you have found a reliable extension builder in MK11. Alexander Bradshaw LTD is a friendly and reliable company based in MK11 who consider ...
From £87,016
Need an Extension Builder in MK11? D Catt Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £86,952
Relax... you have found a reliable extension builder in MK11. Dean Prichard Building Services is a friendly and reliable company based in MK11 who ...
From £87,392
Need an Extension Builder in MK11? STARGRADE CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £87,280
Need an Extension Builder in MK11? JA Project Management Services has been helping local clients (20 mile radius) with their extension buildering j...
From £87,040
Trusted and professional extension builder in MK11. Experienced in all extension buildering work and keeping within budget and on quote. Langton Bu...
From £87,496
Our building services company JAB Home Improvements helps customers in Milton Keynes and the surrounding area by providing professional, trustworth...
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...

Building a granny annexe ranges from £86,856 (R&R CONSTRUCTION based in MK12) 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 MK11 by posting a job with HaMuch. We will send it to extension builders in MK11 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 Aylesbury Vale | £36 | £246 |
| Granny Annexe near Leighton Buzzard | £38 | £270 |
| Granny Annexe near Northampton | £35 | £239 |
| Granny Annexe near Ampthill | £38 | £258 |
| Granny Annexe near Aylesbury | £42 | £270 |
| Granny Annexe near Kempston | £44 | £273 |
| Granny Annexe near Mid Bedfordshire | £42 | £276 |
| Granny Annexe near Bicester | £35 | £249 |
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 - £17,678

Two storey extension - £88,268

Build a timber frame extension - £26,178

Build a swimming pool - £81,178

Single storey extension - £58,568

Side return extension - £43,507

Install an RSJ - £2,378

Outbuilding - £10,178

Build a Mansard loft conversion - £52,178

Loft conversion - £35,423

Build a kitchen extension - £42,178

Hip to gable loft conversion - £42,178

Granny annexe - £87,178

Garden office - £10,178

Convert a Garage - £16,178

Garage - £18,678

Build a flat roof extension - £22,178

Build a dormer loft conversion - £42,178

Concrete foundations - £6,428

Convert a bungalow loft - £29,178

Convert a basement - £39,507