From £17,012
Ballynahinch, BT24
N W Doyle & Son is a trusted extension builder serving customers in Ballynahinch and the surrounding area. Contact us to today to get a competitive...
From £16,772
apex pharaoh ltd is a trusted extension builder serving customers in Ballynahinch and the surrounding area. Contact us to today to get a competitiv...
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 £16,900
T.I Building is a trusted extension builder serving customers in Ballynahinch and the surrounding area. Contact us to today to get a competitive qu...
From £16,884
Relax... you have found a reliable extension builder in Ballynahinch. Finch Construction NI is a friendly and reliable company based in Ballynahinc...
From £16,676
Trusted and professional extension builder in Ballynahinch. Experienced in all extension buildering work and keeping within budget and on quote. Ex...
From £16,836
Trusted and professional extension builder in Ballynahinch. Experienced in all extension buildering work and keeping within budget and on quote. Be...
From £16,868
Relax... you have found a reliable extension builder in Ballynahinch. SM Plumbing & Heating is a friendly and reliable company based in Ballynahinc...
From £16,812
Colin Gilmore Building Contractor is an established extension buildering business in Ballynahinch. We come highly recommended and provide competiti...

Underpinning ranges from £16,636 (Mount Oriel Conversions & Extensions based in BT8) to £17,012 (N W Doyle & Son based in BT24), 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 Ballynahinch by posting a job with HaMuch and we will send it to extension builders in Ballynahinch.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Ballynahinch | £19 | £189 |
| Underpin A Building near Saintfield | £23 | £162 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Comber | £22 | £160 |
| Underpin A Building near Ballygowan | £24 | £183 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Portaferry | £22 | £164 |
| 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 - £16,838

Two storey extension - £87,008

Build a timber frame extension - £25,338

Build a swimming pool - £80,338

Single storey extension - £41,768

Side return extension - £34,057

Install an RSJ - £1,538

Outbuilding - £9,338

Build a Mansard loft conversion - £51,338

Loft conversion - £27,548

Build a kitchen extension - £41,338

Hip to gable loft conversion - £41,338

Granny annexe - £86,338

Garden office - £9,338

Convert a Garage - £15,338

Garage - £17,838

Build a flat roof extension - £21,338

Build a dormer loft conversion - £41,338

Concrete foundations - £5,588

Convert a bungalow loft - £28,338

Convert a basement - £30,057