From £17,596
MJ solutions is an established and experienced local extension builder in Royal Wootton Bassett. Please contact us for a free, no obligation quote...
From £17,300
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,652
Prestige Build Services LTD is a trusted extension builder serving customers in Royal Wootton Bassett and the surrounding area. Contact us to today...
From £17,036
Need an Extension Builder in Royal Wootton Bassett? R PEARCE BUILDING has been helping local clients (20 mile radius) with their extension builderi...
From £17,628
Relax... you have found a reliable extension builder in Royal Wootton Bassett. CHF CONSTRUCTION is a friendly and reliable company based in Royal W...
From £17,556
DSA CONSTRUCTION is an established extension buildering business in Royal Wootton Bassett. We come highly recommended and provide competitive quote...
From £17,364
Relax... you have found a reliable extension builder in Royal Wootton Bassett. A P BUILDING CONTRACTORS LTD is a friendly and reliable company base...
From £16,980
MR HOWELL are here to help customers who need an Extension Builder in Royal Wootton Bassett. We offer a competitive rate to complete all your exten...
From £17,652
Need to find an Extension Builder near you for all your extension buildering work?
A S A BUILDING SERVICES LTD provides a local, trusted ex...
From £17,452
A D BUILDING SERVICES T/A is a trusted extension builder serving customers in Royal Wootton Bassett and the surrounding area. Contact us to today t...

Underpinning ranges from £16,980 (MR HOWELL based in SN3) to £17,652 (Prestige Build Services 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 Royal Wootton Bassett by posting a job with HaMuch and we will send it to extension builders in Royal Wootton Bassett.
"Underpin a building" - SN3, job posted 09/05/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Swindon | £38 | £238 |
| Underpin A Building near Stratton St Margaret | £37 | £238 |
| Underpin A Building near Thamesdown | £38 | £239 |
| Underpin A Building near Calne | £29 | £225 |
| Underpin A Building near North Wiltshire | £32 | £242 |
| Underpin A Building near West Wiltshire | £32 | £242 |
| Underpin A Building near Devizes | £32 | £242 |
| Underpin A Building near Vale of White Horse | £36 | £271 |
| Underpin A Building near Chippenham | £34 | £258 |
| Underpin A Building near Trowbridge | £34 | £266 |
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 - £17,422

Two storey extension - £87,882

Build a timber frame extension - £25,922

Build a swimming pool - £80,922

Single storey extension - £53,432

Side return extension - £40,618

Install an RSJ - £2,122

Outbuilding - £9,922

Build a Mansard loft conversion - £51,922

Loft conversion - £33,015

Build a kitchen extension - £41,922

Hip to gable loft conversion - £41,922

Granny annexe - £86,922

Garden office - £9,922

Convert a Garage - £15,922

Garage - £18,422

Build a flat roof extension - £21,922

Build a dormer loft conversion - £41,922

Concrete foundations - £6,172

Convert a bungalow loft - £28,922

Convert a basement - £36,618