From £16,772
apex pharaoh ltd is a trusted extension builder serving customers in Comber and the surrounding area. Contact us to today to get a competitive quot...
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 £16,868
Relax... you have found a reliable extension builder in Comber. SM Plumbing & Heating is a friendly and reliable company based in Comber who consid...
From £16,676
Trusted and professional extension builder in Comber. Experienced in all extension buildering work and keeping within budget and on quote. Extended...
From £16,884
Designco Ltd is an established extension buildering business in Comber. We come highly recommended and provide competitive quotes for your work.
From £16,796
Ballantine building solutions is an established extension buildering business in Comber. We come highly recommended and provide competitive quotes ...
From £16,764
Trusted and professional extension builder in Comber. Experienced in all extension buildering work and keeping within budget and on quote. DGA have...
From £16,836
Trusted and professional extension builder in Comber. Experienced in all extension buildering work and keeping within budget and on quote. Belfast ...
From £16,900
T.I Building is a trusted extension builder serving customers in Comber and the surrounding area. Contact us to today to get a competitive quote fo...

Underpinning ranges from £16,636 (Mount Oriel Conversions & Extensions based in BT8) to £16,988 (AK Building Services based in BT8), 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 Comber by posting a job with HaMuch and we will send it to extension builders in Comber.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Underpin A Building near Comber | £22 | £160 |
| Underpin A Building near Ballygowan | £24 | £183 |
| Underpin A Building near Carryduff | £23 | £158 |
| Underpin A Building near Holywood | £23 | £159 |
| Underpin A Building near Saintfield | £23 | £162 |
| Underpin A Building near Belfast | £23 | £161 |
| Underpin A Building near Bangor | £24 | £183 |
| Underpin A Building near Bangor | £24 | £183 |
| Underpin A Building near Ballynahinch | £19 | £189 |
| Underpin A Building near Greenisland | £23 | £153 |
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 - £16,812

Two storey extension - £86,968

Build a timber frame extension - £25,312

Build a swimming pool - £80,312

Single storey extension - £41,240

Side return extension - £33,760

Install an RSJ - £1,512

Outbuilding - £9,312

Build a Mansard loft conversion - £51,312

Loft conversion - £27,300

Build a kitchen extension - £41,312

Hip to gable loft conversion - £41,312

Granny annexe - £86,312

Garden office - £9,312

Convert a Garage - £15,312

Garage - £17,812

Build a flat roof extension - £21,312

Build a dormer loft conversion - £41,312

Concrete foundations - £5,562

Convert a bungalow loft - £28,312

Convert a basement - £29,760