From £16,900
T.I Building is a trusted extension builder serving customers in Hillsborough And Culcavy and the surrounding area. Contact us to today to get a co...
From £16,884
Relax... you have found a reliable extension builder in Hillsborough And Culcavy. Finch Construction NI is a friendly and reliable company based in...
From £16,836
Trusted and professional extension builder in Hillsborough And Culcavy. Experienced in all extension buildering work and keeping within budget and ...
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 £16,676
Trusted and professional extension builder in Hillsborough And Culcavy. Experienced in all extension buildering work and keeping within budget and ...
From £16,948
Trusted and professional extension builder in Hillsborough And Culcavy. Experienced in all extension buildering work and keeping within budget and ...
From £16,868
Relax... you have found a reliable extension builder in Hillsborough And Culcavy. SM Plumbing & Heating is a friendly and reliable company based in...
From £16,860
Power Construction is an established and experienced local extension builder in Hillsborough And Culcavy. Please contact us for a free, no obligati...

Underpinning ranges from £16,636 (Mount Oriel Conversions & Extensions based in BT8) to £18,060 (Build a Boiler based in BT67), 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 Hillsborough And Culcavy by posting a job with HaMuch and we will send it to extension builders in Hillsborough And Culcavy.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Maghaberry | £31 | £205 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Waringstown | £23 | £167 |
| Underpin A Building near Ballynahinch | £19 | £189 |
| Underpin A Building near Saintfield | £23 | £162 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Crumlin | £26 | £194 |
| Underpin A Building near Banbridge | £29 | £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 - £16,966

Two storey extension - £87,198

Build a timber frame extension - £25,466

Build a swimming pool - £80,466

Single storey extension - £44,312

Side return extension - £35,488

Install an RSJ - £1,666

Outbuilding - £9,466

Build a Mansard loft conversion - £51,466

Loft conversion - £28,740

Build a kitchen extension - £41,466

Hip to gable loft conversion - £41,466

Granny annexe - £86,466

Garden office - £9,466

Convert a Garage - £15,466

Garage - £17,966

Build a flat roof extension - £21,466

Build a dormer loft conversion - £41,466

Concrete foundations - £5,716

Convert a bungalow loft - £28,466

Convert a basement - £31,488