From £17,140
With extensive extension buildering experience, we provide reliable, high-quality workmanship at competitive prices. G K Contracts Building & Joine...
From £16,860
Power Construction is an established and experienced local extension builder in Killylea. Please contact us for a free, no obligation quote and com...
From £17,516
Need to find an Extension Builder near you for all your extension buildering work?
GMC Construction provides a local, trusted extension bui...
From £17,036
Experienced extension builder ready to quote for your work. Terry Design is the best extension builder in Killylea. No obligation free quotes and m...
From £16,948
Trusted and professional extension builder in Killylea. Experienced in all extension buildering work and keeping within budget and on quote. The Me...
From £17,284
JP&S Construction Ltd is an established extension buildering business in Killylea. We come highly recommended and provide competitive quotes for yo...

Underpinning ranges from £16,860 (Power Construction based in BT65) to £17,516 (GMC Construction based in BT70), 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 Killylea by posting a job with HaMuch and we will send it to extension builders in Killylea.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Craigavon | £23 | £181 |
| Underpin A Building near Banbridge | £29 | £205 |
| Underpin A Building near Waringstown | £23 | £167 |
| Underpin A Building near Coalisland | £27 | £223 |
| Underpin A Building near Dungannon | £30 | £238 |
| Underpin A Building near Maghaberry | £31 | £205 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Crumlin | £26 | £194 |
| Underpin A Building near Kilkeel | £28 | £182 |
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 - £17,131

Two storey extension - £87,446

Build a timber frame extension - £25,631

Build a swimming pool - £80,631

Single storey extension - £47,613

Side return extension - £37,345

Install an RSJ - £1,831

Outbuilding - £9,631

Build a Mansard loft conversion - £51,631

Loft conversion - £30,288

Build a kitchen extension - £41,631

Hip to gable loft conversion - £41,631

Granny annexe - £86,631

Garden office - £9,631

Convert a Garage - £15,631

Garage - £18,131

Build a flat roof extension - £21,631

Build a dormer loft conversion - £41,631

Concrete foundations - £5,881

Convert a bungalow loft - £28,631

Convert a basement - £33,345