From £17,364
Blunsdon, SN26
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,180
Trusted and professional extension builder in Blunsdon. Experienced in all extension buildering work and keeping within budget and on quote. G R & ...
From £17,260
Dacol Services is Swindons number 1 property maintenance service.
Trusted by many letting agents, landlords, homeowners, and hoteliers.
From £17,596
MJ solutions is an established and experienced local extension builder in Blunsdon. Please contact us for a free, no obligation quote and competit...
From £16,956
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,324
R & R BUILDERS is an established and experienced local extension builder in Blunsdon. Please contact us for a free, no obligation quote and competi...
From £17,644
BROWNS TOTAL DESIGN & BUILD LTD is an established and experienced local extension builder in Blunsdon. Please contact us for a free, no obligation ...
From £17,740
Experienced extension builder ready to quote for your work. Biocraft South West Ltd is the best extension builder in Blunsdon. No obligation free q...
From £17,572
We have a skilled and dedicated team of professional tradesmen to carry out all your requirements. Whether you are looking to build, extend or upgr...
From £17,228
SWIFT DESIGN & BUILD LTD are here to help customers who need an Extension Builder in Blunsdon. We offer a competitive rate to complete all your ext...

Underpinning ranges from £16,956 (Watts Builders based in SN25) to £17,740 (Biocraft South West Ltd based in SN5), 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 Blunsdon by posting a job with HaMuch and we will send it to extension builders in Blunsdon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Thamesdown | £38 | £239 |
| Underpin A Building near Stratton St Margaret | £37 | £238 |
| Underpin A Building near Swindon | £38 | £238 |
| Underpin A Building near Vale of White Horse | £36 | £271 |
| Underpin A Building near Calne | £29 | £225 |
| Underpin A Building near Witney | £32 | £244 |
| Underpin A Building near Chippenham | £34 | £258 |
| Underpin A Building near North Wiltshire | £32 | £242 |
| Underpin A Building near West Wiltshire | £32 | £242 |
| Underpin A Building near Stroud | £33 | £249 |
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 - £17,386

Two storey extension - £87,830

Build a timber frame extension - £25,886

Build a swimming pool - £80,886

Single storey extension - £52,728

Side return extension - £40,222

Install an RSJ - £2,086

Outbuilding - £9,886

Build a Mansard loft conversion - £51,886

Loft conversion - £32,685

Build a kitchen extension - £41,886

Hip to gable loft conversion - £41,886

Granny annexe - £86,886

Garden office - £9,886

Convert a Garage - £15,886

Garage - £18,386

Build a flat roof extension - £21,886

Build a dormer loft conversion - £41,886

Concrete foundations - £6,136

Convert a bungalow loft - £28,886

Convert a basement - £36,222