Russell Channnon
At Templar Developments we work with our clients from thought to finish all the while keeping quality 110%. We cover all your construction needs on...
Hailsham, BN27
Need to find an Extension Builder near you for all your extension buildering work?
S F CONSTRUCTION provides a local, trusted extension bu...
Graham Grooms
Need to find an Extension Builder near you for all your extension buildering work?
HARBOUR BUILDING SERVICES LTD provides a local, trusted ...
Need to find an Extension Builder near you for all your extension buildering work?
Gem Construction (Sussex) Ltd provides a local, trusted ...
Technique Roofing and Maintenance are here to help customers who need an Extension Builder in Hailsham. We offer a competitive rate to complete all...
Experienced extension builder ready to quote for your work. CG Renovations Ltd is the best extension builder in Hailsham. No obligation free quotes...
Need to find an Extension Builder near you for all your extension buildering work?
Heymann Builders Ltd provides a local, trusted extension...
ATLAS BUILDING AND MAINT are here to help customers who need an Extension Builder in Hailsham. We offer a competitive rate to complete all your ext...
From £17,676
Hailsham, BN27
Need to find an Extension Builder near you for all your extension buildering work?
Accurate Roofing & Building Limited provides a local, tr...
From £16,980
Krzysztof Jankowski
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,980 (Pro For You based in BN22) to £17,740 (CG Renovations Ltd based in BN23), 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 Hailsham by posting a job with HaMuch and we will send it to extension builders in Hailsham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Hailsham | £31 | £243 |
| Underpin A Building near Eastbourne | £32 | £245 |
| Underpin A Building near Wealden | £35 | £256 |
| Underpin A Building near Seaford | £34 | £243 |
| Underpin A Building near Bexhill-on-Sea | £31 | £243 |
| Underpin A Building near Crowborough | £36 | £258 |
| Underpin A Building near Hastings | £31 | £246 |
| Underpin A Building near Brighton and Hove | £35 | £251 |
| Underpin A Building near Brighton | £35 | £251 |
| Underpin A Building near Tunbridge Wells | £37 | £258 |
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 - £17,412

Two storey extension - £87,868

Build a timber frame extension - £25,912

Build a swimming pool - £80,912

Single storey extension - £53,240

Side return extension - £40,510

Install an RSJ - £2,112

Outbuilding - £9,912

Build a Mansard loft conversion - £51,912

Loft conversion - £32,925

Build a kitchen extension - £41,912

Hip to gable loft conversion - £41,912

Granny annexe - £86,912

Garden office - £9,912

Convert a Garage - £15,912

Garage - £18,412

Build a flat roof extension - £21,912

Build a dormer loft conversion - £41,912

Concrete foundations - £6,162

Convert a bungalow loft - £28,912

Convert a basement - £36,510