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Select your affordable Crumlin extension builder
From £16,836
Trusted and professional extension builder in Crumlin. Experienced in all extension buildering work and keeping within budget and on quote. Belfast...

Underpinning ranges from £16,836 (Belfast Loft Company based in BT17) 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 Crumlin by posting a job with HaMuch and we will send it to extension builders in Crumlin.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Crumlin | £26 | £194 |
| Underpin A Building near Maghaberry | £31 | £205 |
| Underpin A Building near Lisburn | £24 | £164 |
| Underpin A Building near Hillsborough and Culcavy | £25 | £170 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Ballyclare | £20 | £124 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Waringstown | £23 | £167 |
| Underpin A Building near Greenisland | £23 | £153 |
| Underpin A Building near Holywood | £23 | £159 |
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 - £17,448

Two storey extension - £87,922

Build a timber frame extension - £25,948

Build a swimming pool - £80,948

Single storey extension - £53,960

Side return extension - £40,915

Install an RSJ - £2,148

Outbuilding - £9,948

Build a Mansard loft conversion - £51,948

Loft conversion - £33,263

Build a kitchen extension - £41,948

Hip to gable loft conversion - £41,948

Granny annexe - £86,948

Garden office - £9,948

Convert a Garage - £15,948

Garage - £18,448

Build a flat roof extension - £21,948

Build a dormer loft conversion - £41,948

Concrete foundations - £6,198

Convert a bungalow loft - £28,948

Convert a basement - £36,915