From £17,364
All Build Construction Services is an established and experienced local extension builder in BH22. Please contact us for a free, no obligation quot...
From £17,660
Need to find an Extension Builder near you for all your extension buildering work?
J.V MARSTON BUILDERS provides a local, trusted extension...
From £18,700
Building extensions and conversions - commercial and domesticstructural repairsgroundworksdrainage workspaving, patios and concreti...
From £17,764
Ankers & Rawlings Developments Ltd is an established extension buildering business in BH22. We come highly recommended and provide competitive quot...
From £17,308
Need to find an Extension Builder near you for all your extension buildering work?
G DANIEL BUILD & MAINT LTD provides a local, trusted ext...
From £17,652
Veramut is a trusted extension builder serving customers in BH22 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £18,348
Rooster Construction is a family-run business located in Bournemouth, Dorset, backed by over 15 years of industry expertise. We specialize in ...
From £17,404
Experienced extension builder ready to quote for your work. PINEVALE BUILDING is the best extension builder in BH22. No obligation free quotes and ...
From £17,676
Trusted and professional extension builder in BH22. Experienced in all extension buildering work and keeping within budget and on quote. MDW KITCHE...

Underpinning ranges from £17,308 (G DANIEL BUILD & MAINT LTD based in BH21) to £18,700 (Wade and Son Builders based in bh22), 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 BH22 by posting a job with HaMuch and we will send it to extension builders in BH22.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bournemouth | £38 | £257 |
| Underpin A Building near Christchurch | £36 | £251 |
| 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 Salisbury | £35 | £247 |
| Underpin A Building near Romsey | £32 | £230 |
| Underpin A Building near Southampton | £34 | £243 |
| Underpin A Building near Eastleigh | £34 | £244 |
| Underpin A Building near Dorchester | £30 | £230 |
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 - £17,770

Two storey extension - £88,406

Build a timber frame extension - £26,270

Build a swimming pool - £81,270

Single storey extension - £60,408

Side return extension - £44,542

Install an RSJ - £2,470

Outbuilding - £10,270

Build a Mansard loft conversion - £52,270

Loft conversion - £36,285

Build a kitchen extension - £42,270

Hip to gable loft conversion - £42,270

Granny annexe - £87,270

Garden office - £10,270

Convert a Garage - £16,270

Garage - £18,770

Build a flat roof extension - £22,270

Build a dormer loft conversion - £42,270

Concrete foundations - £6,520

Convert a bungalow loft - £29,270

Convert a basement - £40,542