From £16,788
We offer a wide range of services completed to a high standard with fully trained personnel
From £16,908
NG Builders is an established extension buildering business in Dumlea. We come highly recommended and provide competitive quotes for your work.
...From £17,196
Relax... you have found a reliable extension builder in Dumlea. JAMSE CONSTRUCTION LTD is a friendly and reliable company based in Dumlea who consi...
From £17,284
JP&S Construction Ltd is an established extension buildering business in Dumlea. We come highly recommended and provide competitive quotes for your...
From £17,284
Relax... you have found a reliable extension builder in Dumlea. Tyrone Turbos is a friendly and reliable company based in Dumlea who consider no jo...
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...

Underpinning ranges from £16,788 (M & R McElhatton Joinery based in BT76) 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 Dumlea by posting a job with HaMuch and we will send it to extension builders in Dumlea.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Dungannon | £23 | £186 |
| Underpin A Building near Strabane | £21 | £173 |
| Underpin A Building near Coalisland | £21 | £173 |
| Underpin A Building near Dungiven | £21 | £179 |
| Underpin A Building near Newbuildings | £20 | £166 |
| Underpin A Building near Londonderry | £20 | £166 |
| Underpin A Building near Magherafelt | £25 | £200 |
| Underpin A Building near Strathfoyle | £20 | £166 |
| Underpin A Building near Craigavon | £22 | £170 |
| Underpin A Building near Coleraine | £21 | £181 |
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 - £17,163

Two storey extension - £87,494

Build a timber frame extension - £25,663

Build a swimming pool - £80,663

Single storey extension - £48,253

Side return extension - £37,705

Install an RSJ - £1,863

Outbuilding - £9,663

Build a Mansard loft conversion - £51,663

Loft conversion - £30,588

Build a kitchen extension - £41,663

Hip to gable loft conversion - £41,663

Granny annexe - £86,663

Garden office - £9,663

Convert a Garage - £15,663

Garage - £18,163

Build a flat roof extension - £21,663

Build a dormer loft conversion - £41,663

Concrete foundations - £5,913

Convert a bungalow loft - £28,663

Convert a basement - £33,705