From £17,700
ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD is an established extension buildering business in OL3. We come highly recommended and provide competiti...
From £17,412
Relax... you have found a reliable extension builder in OL3. CM BUILDING SERVICES is a friendly and reliable company based in OL3 who consider no j...
From £17,148
Palm Developments is an established extension buildering business in OL3. We come highly recommended and provide competitive quotes for your work.<...
From £17,348
I teach others on how to achieve flawless finishes through my blog on my website. i also am a stickler for perfection. I'm very friendly and punctu...
From £17,260
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,220
Need an Extension Builder in OL3? W WELSBY BUILDING SERVICE has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £17,172
Experienced extension builder ready to quote for your work. KG Builders & Construction Ltd is the best extension builder in OL3. No obligation free...
From £17,268
New era developments is a small local limited company. Who create better living spaces . On time and on buget. To a very high standard. Thanks tony...
From £17,348
Trusted and professional extension builder in OL3. Experienced in all extension buildering work and keeping within budget and on quote. We Build ha...

Underpinning ranges from £16,684 (Valdecor based in OL8) to £17,700 (ANDREW WOOD CONSTRUCTION (SADDLEWORTH) LTD based in OL3), 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 OL3 by posting a job with HaMuch and we will send it to extension builders in OL3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Oldham | £31 | £228 |
| Underpin A Building near Royton | £30 | £225 |
| Underpin A Building near Stalybridge | £37 | £230 |
| Underpin A Building near Ashton-under-Lyne | £36 | £231 |
| Underpin A Building near Chadderton | £31 | £224 |
| Underpin A Building near Tameside | £35 | £231 |
| Underpin A Building near Dukinfield | £35 | £231 |
| Underpin A Building near Failsworth | £35 | £235 |
| Underpin A Building near Rochdale | £30 | £221 |
| Underpin A Building near Hyde | £36 | £227 |
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 - £17,256

Two storey extension - £87,634

Build a timber frame extension - £25,756

Build a swimming pool - £80,756

Single storey extension - £50,120

Side return extension - £38,755

Install an RSJ - £1,956

Outbuilding - £9,756

Build a Mansard loft conversion - £51,756

Loft conversion - £31,463

Build a kitchen extension - £41,756

Hip to gable loft conversion - £41,756

Granny annexe - £86,756

Garden office - £9,756

Convert a Garage - £15,756

Garage - £18,256

Build a flat roof extension - £21,756

Build a dormer loft conversion - £41,756

Concrete foundations - £6,006

Convert a bungalow loft - £28,756

Convert a basement - £34,755