From £17,660
Silverwood Construction (Cambridge) Ltd are here to help customers who need an Extension Builder in CB1. We offer a competitive rate to complete al...
From £17,652
Relax... you have found a reliable extension builder in CB1. CROWNBUILD is a friendly and reliable company based in CB1 who consider no job as too ...
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 £17,572
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,956
MDH Construction is an established and experienced local extension builder in CB1. Please contact us for a free, no obligation quote and competitiv...
From £18,860
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in CB1. No obligation free...
From £17,652
Need to find an Extension Builder near you for all your extension buildering work?
JKL Construction & Carpentry Ltd provides a local, trust...
From £17,588
Eric Handyman- builder is an established and experienced local extension builder in CB1. Please contact us for a free, no obligation quote and comp...
From £18,060
Relax... you have found a reliable extension builder in CB1. R G BUILDERS is a friendly and reliable company based in CB1 who consider no job as to...
From £17,068
We are a family business providing a one stop shop to meet all your building and renervation needs

Underpinning ranges from £17,068 (Sean W Scott General Builder based in IP28) to £18,860 (ALLIED BUILDING ASSOCIATES LTD based in CB22), 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 CB1 by posting a job with HaMuch and we will send it to extension builders in CB1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Cambridge | £38 | £271 |
| Underpin A Building near South Cambridgeshire | £43 | £305 |
| Underpin A Building near Haverhill | £37 | £260 |
| Underpin A Building near Ely | £40 | £279 |
| Underpin A Building near Huntingdon | £38 | £284 |
| Underpin A Building near St Neots | £51 | £318 |
| Underpin A Building near Biggleswade | £41 | £268 |
| Underpin A Building near Bishop's Stortford | £42 | £264 |
| Underpin A Building near East Hertfordshire | £44 | £289 |
| Underpin A Building near Letchworth | £44 | £283 |
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 - £17,784

Two storey extension - £88,426

Build a timber frame extension - £26,284

Build a swimming pool - £81,284

Single storey extension - £60,680

Side return extension - £44,695

Install an RSJ - £2,484

Outbuilding - £10,284

Build a Mansard loft conversion - £52,284

Loft conversion - £36,413

Build a kitchen extension - £42,284

Hip to gable loft conversion - £42,284

Granny annexe - £87,284

Garden office - £10,284

Convert a Garage - £16,284

Garage - £18,784

Build a flat roof extension - £22,284

Build a dormer loft conversion - £42,284

Concrete foundations - £6,534

Convert a bungalow loft - £29,284

Convert a basement - £40,695