From £17,292
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,476
Experienced extension builder ready to quote for your work. PINECLIFFE CONSTRUCTION LTD is the best extension builder in BH6. No obligation free qu...
From £17,716
Need an Extension Builder in BH6? Upscale Home Improvements has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £17,468
pantlin construction ltd are here to help customers who need an Extension Builder in BH6. We offer a competitive rate to complete all your extensio...
From £17,476
Our building services company Colin Sloper General Builder has twenty five years’ experience and have been helping customers in Dorset and the su...
From £17,660
A design and build service for commercial or residential properties. House of Tigerhorse is the design arm of Broad Construction which together of...
From £17,468
Trusted and professional extension builder in BH6. Experienced in all extension buildering work and keeping within budget and on quote. B.Hunter ha...
From £17,340
Relax... you have found a reliable extension builder in BH6. First Alpha Home Improvements Ltd is a friendly and reliable company based in BH6 who ...
From £17,724
Elmer Building Services ltd is an established extension buildering business in BH6. We come highly recommended and provide competitive quotes for y...

Underpinning ranges from £17,292 (J F DEWHIRST & CO based in BH6) to £18,004 (Zeneli Builders based in BH23), 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 BH6 by posting a job with HaMuch and we will send it to extension builders in BH6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Christchurch | £36 | £251 |
| Underpin A Building near Bournemouth | £38 | £257 |
| Underpin A Building near Poole | £38 | £250 |
| Underpin A Building near New Forest | £32 | £245 |
| Underpin A Building near Totton | £34 | £243 |
| Underpin A Building near Southampton | £34 | £243 |
| Underpin A Building near Isle of Wight | £34 | £246 |
| Underpin A Building near Romsey | £32 | £230 |
| Underpin A Building near Salisbury | £35 | £247 |
| Underpin A Building near Locks Heath | £33 | £240 |
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 - £17,562

Two storey extension - £88,094

Build a timber frame extension - £26,062

Build a swimming pool - £81,062

Single storey extension - £56,248

Side return extension - £42,202

Install an RSJ - £2,262

Outbuilding - £10,062

Build a Mansard loft conversion - £52,062

Loft conversion - £34,335

Build a kitchen extension - £42,062

Hip to gable loft conversion - £42,062

Granny annexe - £87,062

Garden office - £10,062

Convert a Garage - £16,062

Garage - £18,562

Build a flat roof extension - £22,062

Build a dormer loft conversion - £42,062

Concrete foundations - £6,312

Convert a bungalow loft - £29,062

Convert a basement - £38,202