From £17,500
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,908
A "widespread respect and admiration" is how the dictionary describes the word "prestige" and we know that our customers perceive, not just the kit...
From £17,468
Experienced extension builder ready to quote for your work. Archway Construction (UK) Limited is the best extension builder in PE7. No obligation f...
From £17,276
GVT is an established extension buildering business in PE7. We come highly recommended and provide competitive quotes for your work.
From £17,420
Trusted and professional extension builder in PE7. Experienced in all extension buildering work and keeping within budget and on quote. RBAM Constr...
From £17,660
DAR CONSTRUCTION are here to help customers who need an Extension Builder in PE7. We offer a competitive rate to complete all your extension builde...
From £17,900
Member since January 2026
Welcome to Price & Sons! We are a building company based in Peterborough. If you are interested in a quote please get in touch with us!
From £17,388
Your Local builders in Peterborough
GMF Builders is owned and managed by Graham Fuller who has approximately 23 years experience in the ...
From £17,580
Trusted and professional extension builder in PE7. Experienced in all extension buildering work and keeping within budget and on quote. Moores Roof...
From £17,604
Lauren Builders are a domestic and commercial building company based in Peterborough, and is owned and run by Father & Son, Mick & Lee Gapper, who ...

Underpinning ranges from £17,276 (GVT based in PE1) to £17,908 (Prestige Kitchen & Bathrooms Ltd based in PE2), 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 PE7 by posting a job with HaMuch and we will send it to extension builders in PE7.
"Underpinning around 160linear meters 400mm wide x 350mm deep" - PE2, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Peterborough | £42 | £280 |
| Underpin A Building near Huntingdonshire | £36 | £290 |
| Underpin A Building near Huntingdon | £38 | £284 |
| Underpin A Building near Stamford | £35 | £248 |
| Underpin A Building near Wisbech | £34 | £255 |
| Underpin A Building near Spalding | £32 | £238 |
| Underpin A Building near St Neots | £51 | £318 |
| Underpin A Building near Corby | £30 | £214 |
| Underpin A Building near Kettering | £34 | £237 |
| Underpin A Building near Rushden | £34 | £231 |
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 - £17,570

Two storey extension - £88,106

Build a timber frame extension - £26,070

Build a swimming pool - £81,070

Single storey extension - £56,408

Side return extension - £42,292

Install an RSJ - £2,270

Outbuilding - £10,070

Build a Mansard loft conversion - £52,070

Loft conversion - £34,410

Build a kitchen extension - £42,070

Hip to gable loft conversion - £42,070

Granny annexe - £87,070

Garden office - £10,070

Convert a Garage - £16,070

Garage - £18,570

Build a flat roof extension - £22,070

Build a dormer loft conversion - £42,070

Concrete foundations - £6,320

Convert a bungalow loft - £29,070

Convert a basement - £38,292