Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
HAROLD ROBINSON
HAROLDS CORP is a trusted extension builder serving customers in WN7 and the surrounding area. Contact us to today to get a competitive quote for e...
Andrew Smethurst
APS pointing and property maintenance offers a complete building service from small patch pointing to full refurb or extensions. Competitiv...
From £17,300
Need to find an Extension Builder near you for all your extension buildering work?
J R Building Services provides a local, trusted extensio...
From £17,500
SBA Facilities is a family run business founded by Director, Josef who has over 25 years of experience with the corporate, commercial, and domestic...
From £17,532
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Underpinning ranges from £16,956 (Aps pointing and property maintenance based in WN2) to £17,548 (HAROLDS CORP based in WN2), 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 WN7 by posting a job with HaMuch and we will send it to extension builders in WN7.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Leigh | £31 | £224 |
| Underpin A Building near Atherton | £31 | £223 |
| Underpin A Building near Westhoughton | £31 | £222 |
| Underpin A Building near Golborne | £30 | £222 |
| Underpin A Building near Hindley | £30 | £219 |
| Underpin A Building near Little Hulton | £31 | £220 |
| Underpin A Building near Ashton-in-Makerfield | £30 | £220 |
| Underpin A Building near Irlam | £32 | £225 |
| Underpin A Building near Newton-le-Willows | £31 | £221 |
| Underpin A Building near Wigan | £30 | £220 |
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 - £17,321

Two storey extension - £87,732

Build a timber frame extension - £25,821

Build a swimming pool - £80,821

Single storey extension - £51,427

Side return extension - £39,490

Install an RSJ - £2,021

Outbuilding - £9,821

Build a Mansard loft conversion - £51,821

Loft conversion - £32,075

Build a kitchen extension - £41,821

Hip to gable loft conversion - £41,821

Granny annexe - £86,821

Garden office - £9,821

Convert a Garage - £15,821

Garage - £18,321

Build a flat roof extension - £21,821

Build a dormer loft conversion - £41,821

Concrete foundations - £6,071

Convert a bungalow loft - £28,821

Convert a basement - £35,490