From £17,012
N W Doyle & Son is a trusted extension builder serving customers in Newcastle and the surrounding area. Contact us to today to get a competitive qu...
From £17,140
With extensive extension buildering experience, we provide reliable, high-quality workmanship at competitive prices. G K Contracts Building & Joine...
From £16,636
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
From £16,908
Trusted and professional extension builder in Newcastle. Experienced in all extension buildering work and keeping within budget and on quote. JDL C...
From £16,996
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £16,772
apex pharaoh ltd is a trusted extension builder serving customers in Newcastle and the surrounding area. Contact us to today to get a competitive q...

Underpinning ranges from £16,636 (Mount Oriel Conversions & Extensions based in BT8) to £17,140 (G K Contracts Building & Joinery based in BT32), 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 Newcastle by posting a job with HaMuch and we will send it to extension builders in Newcastle.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Kilkeel | £28 | £182 |
| Underpin A Building near Ballynahinch | £19 | £189 |
| Underpin A Building near Banbridge | £29 | £205 |
| Underpin A Building near Saintfield | £23 | £162 |
| Underpin A Building near Portaferry | £22 | £164 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Waringstown | £23 | £167 |
| Underpin A Building near Maghaberry | £31 | £205 |
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 - £16,911

Two storey extension - £87,116

Build a timber frame extension - £25,411

Build a swimming pool - £80,411

Single storey extension - £43,213

Side return extension - £34,870

Install an RSJ - £1,611

Outbuilding - £9,411

Build a Mansard loft conversion - £51,411

Loft conversion - £28,225

Build a kitchen extension - £41,411

Hip to gable loft conversion - £41,411

Granny annexe - £86,411

Garden office - £9,411

Convert a Garage - £15,411

Garage - £17,911

Build a flat roof extension - £21,411

Build a dormer loft conversion - £41,411

Concrete foundations - £5,661

Convert a bungalow loft - £28,411

Convert a basement - £30,870