From £16,980
Trusted and professional extension builder in BN8. Experienced in all extension buildering work and keeping within budget and on quote. Mr have man...
From £17,332
We have been in the trade 40 years highly experienced tradesman excellent references
From £17,700
Intrinsic Spaces Ltd is an established extension buildering business in BN8. We come highly recommended and provide competitive quotes for your wor...
From £17,604
Intrinsic Spaces can provide the framework upon which you can turn your vision into a reality. We reduce the stress associated with managing a comp...
From £17,244
MB Cable Limited is a trusted extension builder serving customers in BN8 and the surrounding area. Contact us to today to get a competitive quote f...
From £17,596
Trusted and professional extension builder in BN8. Experienced in all extension buildering work and keeping within budget and on quote. RJW CONSTRU...
From £17,340
Experienced extension builder ready to quote for your work. Uckfield Building Services is the best extension builder in BN8. No obligation free quo...
From £17,564
Need an Extension Builder in BN8? DE LELLIS CONSTRUCTION LTD has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £17,748
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,860
TOLLEY CARPENTRY is an established extension buildering business in BN8. We come highly recommended and provide competitive quotes for your work.

Underpinning ranges from £16,980 (Mr based in BN8) to £17,860 (TOLLEY CARPENTRY based in RH17), 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 BN8 by posting a job with HaMuch and we will send it to extension builders in BN8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Burgess Hill | £36 | £240 |
| Underpin A Building near Wealden | £35 | £256 |
| Underpin A Building near Haywards Heath | £35 | £256 |
| Underpin A Building near Brighton and Hove | £35 | £251 |
| Underpin A Building near Hailsham | £31 | £243 |
| Underpin A Building near Seaford | £34 | £243 |
| Underpin A Building near Brighton | £35 | £251 |
| Underpin A Building near Crowborough | £36 | £258 |
| Underpin A Building near Mid Sussex | £35 | £261 |
| Underpin A Building near Eastbourne | £32 | £245 |
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 - £17,497

Two storey extension - £87,995

Build a timber frame extension - £25,997

Build a swimming pool - £80,997

Single storey extension - £54,936

Side return extension - £41,464

Install an RSJ - £2,197

Outbuilding - £9,997

Build a Mansard loft conversion - £51,997

Loft conversion - £33,720

Build a kitchen extension - £41,997

Hip to gable loft conversion - £41,997

Granny annexe - £86,997

Garden office - £9,997

Convert a Garage - £15,997

Garage - £18,497

Build a flat roof extension - £21,997

Build a dormer loft conversion - £41,997

Concrete foundations - £6,247

Convert a bungalow loft - £28,997

Convert a basement - £37,464