From £10,248
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 £10,232
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 £10,016
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 £9,952
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 £10,392
Need an Extension Builder in MK11? STARGRADE CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £10,280
Need an Extension Builder in MK11? JA Project Management Services has been helping local clients (20 mile radius) with their extension buildering j...
From £10,040
Trusted and professional extension builder in MK11. Experienced in all extension buildering work and keeping within budget and on quote. Langton Bu...
From £10,496
Our building services company JAB Home Improvements helps customers in Milton Keynes and the surrounding area by providing professional, trustworth...
From £10,272
Need to find an Extension Builder near you for all your extension buildering work?
Asanta Builder provides a local, trusted extension build...

Garden offices range from the cheapest of £9,856 (R&R CONSTRUCTION based in MK12) to the dearest of £10,496 (JAB based in MK4), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in MK11 by posting a job with HaMuch. We'll send it to extension builders in MK11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Milton Keynes | £39 | £263 |
| Garden Office near Bletchley | £39 | £265 |
| Garden Office near Aylesbury Vale | £36 | £246 |
| Garden Office near Leighton Buzzard | £38 | £270 |
| Garden Office near Northampton | £35 | £239 |
| Garden Office near Ampthill | £38 | £258 |
| Garden Office near Aylesbury | £42 | £270 |
| Garden Office near Kempston | £44 | £273 |
| Garden Office near Mid Bedfordshire | £42 | £276 |
| Garden Office 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