From £17,532
Need to find an Extension Builder near you for all your extension buildering work?
Gem Construction (Sussex) Ltd provides a local, trusted ...
From £17,228
Need to find an Extension Builder near you for all your extension buildering work?
HARBOUR BUILDING SERVICES LTD provides a local, trusted ...
From £17,324
ATLAS BUILDING AND MAINT are here to help customers who need an Extension Builder in BN24. We offer a competitive rate to complete all your extensi...
From £17,436
Need to find an Extension Builder near you for all your extension buildering work?
Will Loch Construction provides a local, trusted extensi...
From £17,356
Need to find an Extension Builder near you for all your extension buildering work?
Heymann Builders Ltd provides a local, trusted extension...
From £17,604
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...
From £17,420
Technique Roofing and Maintenance are here to help customers who need an Extension Builder in BN24. We offer a competitive rate to complete all you...
From £17,380
Henty Building Services Ltd is a trusted extension builder serving customers in BN24 and the surrounding area. Contact us to today to get a competi...
From £17,740
Experienced extension builder ready to quote for your work. CG Renovations Ltd is the best extension builder in BN24. No obligation free quotes and...
From £18,284
With over 20 years experience covering a multiple of disciplines within the building Industry, we are best placed to give you the correct advice on...

Underpinning ranges from £17,228 (HARBOUR BUILDING SERVICES LTD based in BN23) to £18,284 (Insite Sepecialists 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 BN24 by posting a job with HaMuch and we will send it to extension builders in BN24.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Eastbourne | £32 | £245 |
| Underpin A Building near Hailsham | £31 | £243 |
| Underpin A Building near Bexhill-on-Sea | £31 | £243 |
| Underpin A Building near Seaford | £34 | £243 |
| Underpin A Building near Hastings | £31 | £246 |
| Underpin A Building near Wealden | £35 | £256 |
| Underpin A Building near Crowborough | £36 | £258 |
| 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 - £17,530

Two storey extension - £88,046

Build a timber frame extension - £26,030

Build a swimming pool - £81,030

Single storey extension - £55,608

Side return extension - £41,842

Install an RSJ - £2,230

Outbuilding - £10,030

Build a Mansard loft conversion - £52,030

Loft conversion - £34,035

Build a kitchen extension - £42,030

Hip to gable loft conversion - £42,030

Granny annexe - £87,030

Garden office - £10,030

Convert a Garage - £16,030

Garage - £18,530

Build a flat roof extension - £22,030

Build a dormer loft conversion - £42,030

Concrete foundations - £6,280

Convert a bungalow loft - £29,030

Convert a basement - £37,842