From £10,432
Experienced extension builder ready to quote for your work. SWANEY CONSTRUCTION LTD is the best extension builder in MK45. No obligation free quote...
From £10,568
We strive for quality for our clients. With over 37 years experience in the building industry we can offer a full service for our clients including...
From £10,272
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,552
Blue Conker are dedicated to creating spaces for you to enjoy living. From the planning stages through to the finishing touches, our team of profes...
From £10,240
G/WORKS & GENERAL BUILDING is an established extension buildering business in MK45. We come highly recommended and provide competitive quotes for y...
From £10,328
Our building services company David Douglas Developments has over 30 years’ experience, and built an established reputation of providing customer...
From £9,624
Trusted and professional extension builder in MK45. Experienced in all extension buildering work and keeping within budget and on quote. K FREEMAN ...
From £10,280
Trusted and professional extension builder in MK45. Experienced in all extension buildering work and keeping within budget and on quote. JHF Constr...
From £9,880
Experienced extension builder ready to quote for your work. Cousins Builders Ltd is the best extension builder in MK45. No obligation free quotes a...
From £9,848
Need an Extension Builder in MK45? R&J Building Services Ltd has been helping local clients (20 mile radius) with their extension buildering jobs f...

Garden offices range from the cheapest of £9,624 (K FREEMAN BUILDERS LIMITED based in MK43) to the dearest of £10,568 (O & E Developments Ld based in MK45), 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 MK45 by posting a job with HaMuch. We'll send it to extension builders in MK45.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Ampthill | £38 | £258 |
| Garden Office near Mid Bedfordshire | £42 | £276 |
| Garden Office near Kempston | £44 | £273 |
| Garden Office near South Bedfordshire | £45 | £278 |
| Garden Office near Bedford | £45 | £278 |
| Garden Office near Biggleswade | £41 | £268 |
| Garden Office near Luton | £42 | £276 |
| Garden Office near Dunstable | £41 | £270 |
| Garden Office near Letchworth | £44 | £283 |
| Garden Office near Bletchley | £39 | £265 |
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 - £17,702

Two storey extension - £88,304

Build a timber frame extension - £26,202

Build a swimming pool - £81,202

Single storey extension - £59,048

Side return extension - £43,777

Install an RSJ - £2,402

Outbuilding - £10,202

Build a Mansard loft conversion - £52,202

Loft conversion - £35,648

Build a kitchen extension - £42,202

Hip to gable loft conversion - £42,202

Granny annexe - £87,202

Garden office - £10,202

Convert a Garage - £16,202

Garage - £18,702

Build a flat roof extension - £22,202

Build a dormer loft conversion - £42,202

Concrete foundations - £6,452

Convert a bungalow loft - £29,202

Convert a basement - £39,777