MRE Maintenance Services is an established and experienced local extension builder in SL2. Please contact us for a free, no obligation quote and co...
BeautifulRenovation are here to help customers who need an Extension Builder in SL2. We offer a competitive rate to complete all your extension bui...
EIC Builders Ltd are here to help customers who need an Extension Builder in SL2. We offer a competitive rate to complete all your extension builde...
Experienced extension builder ready to quote for your work. Sherry Construction is the best extension builder in SL2. No obligation free quotes and...
BDR Home Improvement are here to help customers who need an Extension Builder in SL2. We offer a competitive rate to complete all your extension bu...
Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
HAMPTON CONSTRUCTION LTD are here to help customers who need an Extension Builder in SL2. We offer a competitive rate to complete all your extensio...
Our building services company A Iqbal Construction Ltd was established in 2018. Since then, we have been helping customers in Slough and the surrou...
Experienced extension builder ready to quote for your work. Rai Builders is the best extension builder in SL2. No obligation free quotes and many h...
Mario
Trusted and professional extension builder in SL2. Experienced in all extension buildering work and keeping within budget and on quote. Mario Polis...

Underpinning ranges from £17,180 (Lp Townsend Brickwork based in SL2) to £17,884 (HAMPTON CONSTRUCTION LTD based in SL2), 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 SL2 by posting a job with HaMuch and we will send it to extension builders in SL2.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Slough | £42 | £272 |
| Underpin A Building near Windsor & Maidenhead | £42 | £272 |
| Underpin A Building near Windsor | £41 | £271 |
| Underpin A Building near Gerrards Cross | £43 | £282 |
| Underpin A Building near Maidenhead | £41 | £273 |
| Underpin A Building near Hillingdon | £63 | £276 |
| Underpin A Building near Egham | £42 | £266 |
| Underpin A Building near Staines-upon-Thames | £42 | £269 |
| Underpin A Building near Ascot | £41 | £276 |
| Underpin A Building near Rickmansworth | £42 | £279 |
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 - £17,560

Two storey extension - £88,090

Build a timber frame extension - £26,060

Build a swimming pool - £81,060

Single storey extension - £56,200

Side return extension - £42,175

Install an RSJ - £2,260

Outbuilding - £10,060

Build a Mansard loft conversion - £52,060

Loft conversion - £34,313

Build a kitchen extension - £42,060

Hip to gable loft conversion - £42,060

Granny annexe - £87,060

Garden office - £10,060

Convert a Garage - £16,060

Garage - £18,560

Build a flat roof extension - £22,060

Build a dormer loft conversion - £42,060

Concrete foundations - £6,310

Convert a bungalow loft - £29,060

Convert a basement - £38,175