From £17,932
Experienced extension builder ready to quote for your work. SWANEY CONSTRUCTION LTD is the best extension builder in Ampthill. No obligation free q...
From £18,068
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 £17,772
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,740
G/WORKS & GENERAL BUILDING is an established extension buildering business in Ampthill. We come highly recommended and provide competitive quotes f...
From £18,052
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 £17,124
Trusted and professional extension builder in Ampthill. Experienced in all extension buildering work and keeping within budget and on quote. K FREE...
From £17,380
Experienced extension builder ready to quote for your work. Cousins Builders Ltd is the best extension builder in Ampthill. No obligation free quot...
From £17,940
EXPERT BUILDING SERVICES is an established and experienced local extension builder in Ampthill. Please contact us for a free, no obligation quote a...
From £17,988
Need an Extension Builder in Ampthill? J B Smith Construction Limited has been helping local clients (20 mile radius) with their extension builderi...
From £17,852
Relax... you have found a reliable extension builder in Ampthill. Claridge Interiors Ltd is a friendly and reliable company based in Ampthill who c...

Underpinning ranges from £17,124 (K FREEMAN BUILDERS LIMITED based in MK43) to £18,068 (O & E Developments Ld based in MK45), 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 Ampthill by posting a job with HaMuch and we will send it to extension builders in Ampthill.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Ampthill | £38 | £258 |
| Underpin A Building near Mid Bedfordshire | £42 | £276 |
| Underpin A Building near Kempston | £44 | £273 |
| Underpin A Building near Bedford | £45 | £278 |
| Underpin A Building near South Bedfordshire | £45 | £278 |
| Underpin A Building near Bletchley | £39 | £265 |
| Underpin A Building near Biggleswade | £41 | £268 |
| Underpin A Building near Dunstable | £41 | £270 |
| Underpin A Building near Luton | £42 | £276 |
| Underpin A Building near Leighton Buzzard | £38 | £270 |
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 - £17,785

Two storey extension - £88,427

Build a timber frame extension - £26,285

Build a swimming pool - £81,285

Single storey extension - £60,696

Side return extension - £44,704

Install an RSJ - £2,485

Outbuilding - £10,285

Build a Mansard loft conversion - £52,285

Loft conversion - £36,420

Build a kitchen extension - £42,285

Hip to gable loft conversion - £42,285

Granny annexe - £87,285

Garden office - £10,285

Convert a Garage - £16,285

Garage - £18,785

Build a flat roof extension - £22,285

Build a dormer loft conversion - £42,285

Concrete foundations - £6,535

Convert a bungalow loft - £29,285

Convert a basement - £40,704