From £17,316
Urban Projects are here to help customers who need an Extension Builder in BH14. We offer a competitive rate to complete all your extension builder...
From £17,516
K CONSTRUCTION T/A is an established and experienced local extension builder in BH14. Please contact us for a free, no obligation quote and competi...
From £17,532
BIRCHES CONSTRUCTION LTD are here to help customers who need an Extension Builder in BH14. We offer a competitive rate to complete all your extensi...
From £17,324
Experienced extension builder ready to quote for your work. ARNOLD SNELL BUILDING LTD is the best extension builder in BH14. No obligation free quo...
From £18,084
Need an Extension Builder in BH14? RNTP ltd has been helping local clients (20 mile radius) with their extension buildering jobs for many years. Ge...
From £17,460
Relax... you have found a reliable extension builder in BH14. William Bowley Projects is a friendly and reliable company based in BH14 who consider...
From £16,748
Frank Barnfield Bricklayer is an established and experienced local extension builder in BH14. Please contact us for a free, no obligation quote and...
From £17,724
Trusted and professional extension builder in BH14. Experienced in all extension buildering work and keeping within budget and on quote. WR WARREN ...
From £17,620
Your Home Construction is an established and experienced local extension builder in BH14. Please contact us for a free, no obligation quote and com...
From £17,396
Experienced extension builder ready to quote for your work. GREENDALE CONSTRUCTION LTD is the best extension builder in BH14. No obligation free qu...

Underpinning ranges from £16,748 (Frank Barnfield Bricklayer based in BH12) to £18,084 (RNTP ltd based in BH14), 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 BH14 by posting a job with HaMuch and we will send it to extension builders in BH14.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Poole | £38 | £250 |
| Underpin A Building near Bournemouth | £38 | £257 |
| Underpin A Building near Christchurch | £36 | £251 |
| Underpin A Building near New Forest | £32 | £245 |
| Underpin A Building near Dorchester | £30 | £230 |
| Underpin A Building near Totton | £34 | £243 |
| Underpin A Building near Weymouth | £33 | £260 |
| Underpin A Building near Salisbury | £35 | £247 |
| Underpin A Building near Romsey | £32 | £230 |
| Underpin A Building near Southampton | £34 | £243 |
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 - £17,472

Two storey extension - £87,958

Build a timber frame extension - £25,972

Build a swimming pool - £80,972

Single storey extension - £54,440

Side return extension - £41,185

Install an RSJ - £2,172

Outbuilding - £9,972

Build a Mansard loft conversion - £51,972

Loft conversion - £33,488

Build a kitchen extension - £41,972

Hip to gable loft conversion - £41,972

Granny annexe - £86,972

Garden office - £9,972

Convert a Garage - £15,972

Garage - £18,472

Build a flat roof extension - £21,972

Build a dormer loft conversion - £41,972

Concrete foundations - £6,222

Convert a bungalow loft - £28,972

Convert a basement - £37,185