From £17,540
Trusted and professional extension builder in MK5. Experienced in all extension buildering work and keeping within budget and on quote. Langton Bui...
From £17,892
Need an Extension Builder in MK5? STARGRADE CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,652
Our building services company Dallcompanies Limited was established in May 2023, but have been helping customers in Milton Keynes and the surroundi...
From £17,996
Our building services company JAB Home Improvements helps customers in Milton Keynes and the surrounding area by providing professional, trustworth...
From £17,348
Need an Extension Builder in MK5? Highland Homes & Gardens has been helping local clients (20 mile radius) with their extension buildering jobs for...
From £17,588
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 £17,724
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,772
Need to find an Extension Builder near you for all your extension buildering work?
Asanta Builder provides a local, trusted extension build...
From £17,452
Relax... you have found a reliable extension builder in MK5. Dean Prichard Building Services is a friendly and reliable company based in MK5 who co...
From £17,740
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...

Underpinning ranges from £17,348 (Highland Homes & Gardens based in MK4) to £17,996 (JAB based in MK4), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in MK5 by posting a job with HaMuch and we will send it to extension builders in MK5.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Milton Keynes | £39 | £263 |
| Underpin A Building near Bletchley | £39 | £265 |
| Underpin A Building near Leighton Buzzard | £38 | £270 |
| Underpin A Building near Aylesbury Vale | £36 | £246 |
| Underpin A Building near Ampthill | £38 | £258 |
| Underpin A Building near Mid Bedfordshire | £42 | £276 |
| Underpin A Building near Aylesbury | £42 | £270 |
| Underpin A Building near Dunstable | £41 | £270 |
| Underpin A Building near Kempston | £44 | £273 |
| Underpin A Building near Bedford | £45 | £278 |
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 - £17,670

Two storey extension - £88,256

Build a timber frame extension - £26,170

Build a swimming pool - £81,170

Single storey extension - £58,408

Side return extension - £43,417

Install an RSJ - £2,370

Outbuilding - £10,170

Build a Mansard loft conversion - £52,170

Loft conversion - £35,348

Build a kitchen extension - £42,170

Hip to gable loft conversion - £42,170

Granny annexe - £87,170

Garden office - £10,170

Convert a Garage - £16,170

Garage - £18,670

Build a flat roof extension - £22,170

Build a dormer loft conversion - £42,170

Concrete foundations - £6,420

Convert a bungalow loft - £29,170

Convert a basement - £39,417