From £17,252
4Walls Project Management Ltd is an established and experienced local extension builder in Andover. Please contact us for a free, no obligation quo...
From £17,484
Andover, SP10
Relax... you have found a reliable extension builder in Andover. Bob Shearer Property Maintenance, Building & Roofing is a friendly and reliable co...
From £17,396
Andover, SP10
Relax... you have found a reliable extension builder in Andover. Groundcraft Ltd is a friendly and reliable company based in Andover who consider n...
From £17,604
Relax... you have found a reliable extension builder in Andover. Eds Builders is a friendly and reliable company based in Andover who consider no j...
From £17,572
DMT Construction t/a are here to help customers who need an Extension Builder in Andover. We offer a competitive rate to complete all your extensio...
From £17,620
Our building services company Shadow UK Construction Ltd was established in March 2022, but have been providing professional, trustworthy building ...
From £17,668
Trusted and professional extension builder in Andover. Experienced in all extension buildering work and keeping within budget and on quote. Sarsen ...
From £17,500
Connie & Bella Industry Ltd is a trusted extension builder serving customers in Andover and the surrounding area. Contact us to today to get a comp...
From £17,540
Need an Extension Builder in Andover? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension builderin...
From £17,604
JJ Acquisitions ltd is a trusted extension builder serving customers in Andover and the surrounding area. Contact us to today to get a competitive ...

Underpinning ranges from £17,252 (4Walls Project Management Ltd based in SP10) to £17,668 (Sarsen Energy Ltd based in SN8), 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 Andover by posting a job with HaMuch and we will send it to extension builders in Andover.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Andover | £40 | £248 |
| Underpin A Building near Test Valley | £37 | £261 |
| Underpin A Building near Winchester | £37 | £266 |
| Underpin A Building near Basingstoke & Deane | £39 | £273 |
| Underpin A Building near Newbury | £37 | £262 |
| Underpin A Building near Romsey | £32 | £230 |
| Underpin A Building near Chandler's Ford | £34 | £245 |
| Underpin A Building near Thatcham | £38 | £266 |
| Underpin A Building near Salisbury | £35 | £247 |
| Underpin A Building near Basingstoke | £39 | £274 |
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 - £17,524

Two storey extension - £88,036

Build a timber frame extension - £26,024

Build a swimming pool - £81,024

Single storey extension - £55,480

Side return extension - £41,770

Install an RSJ - £2,224

Outbuilding - £10,024

Build a Mansard loft conversion - £52,024

Loft conversion - £33,975

Build a kitchen extension - £42,024

Hip to gable loft conversion - £42,024

Granny annexe - £87,024

Garden office - £10,024

Convert a Garage - £16,024

Garage - £18,524

Build a flat roof extension - £22,024

Build a dormer loft conversion - £42,024

Concrete foundations - £6,274

Convert a bungalow loft - £29,024

Convert a basement - £37,770