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Need to find an Extension Builder near you for all your extension buildering work?
WILSONS BUILDERS CO LTD provides a local, trusted extens...
Need an Extension Builder in BS35? Alistair McKenzie has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
Experienced extension builder ready to quote for your work. G & J BUILDING MAINTENANCE is the best extension builder in BS35. No obligation free qu...
From £17,532
Trusted and professional extension builder in BS35. Experienced in all extension buildering work and keeping within budget and on quote. M A Church...

Underpinning ranges from £17,412 (G & J BUILDING MAINTENANCE based in BS35) to £17,684 (WILSONS BUILDERS CO LTD based in GL12), 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 BS35 by posting a job with HaMuch and we will send it to extension builders in BS35.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Bradley Stoke | £34 | £259 |
| Underpin A Building near South Gloucestershire | £34 | £260 |
| Underpin A Building near Yate | £34 | £263 |
| Underpin A Building near Kingswood | £34 | £257 |
| Underpin A Building near Bristol | £33 | £255 |
| Underpin A Building near Clifton | £33 | £255 |
| Underpin A Building near Portishead | £33 | £247 |
| Underpin A Building near Keynsham | £33 | £251 |
| Underpin A Building near Clevedon | £32 | £243 |
| Underpin A Building near Chippenham | £34 | £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 - £17,574

Two storey extension - £88,111

Build a timber frame extension - £26,074

Build a swimming pool - £81,074

Single storey extension - £56,480

Side return extension - £42,333

Install an RSJ - £2,274

Outbuilding - £10,074

Build a Mansard loft conversion - £52,074

Loft conversion - £34,444

Build a kitchen extension - £42,074

Hip to gable loft conversion - £42,074

Granny annexe - £87,074

Garden office - £10,074

Convert a Garage - £16,074

Garage - £18,574

Build a flat roof extension - £22,074

Build a dormer loft conversion - £42,074

Concrete foundations - £6,324

Convert a bungalow loft - £29,074

Convert a basement - £38,333