From £5,618
Relax... you have found a reliable extension builder in BT4. SM Plumbing & Heating is a friendly and reliable company based in BT4 who consider no ...
From £5,634
Designco Ltd is an established extension buildering business in BT4. We come highly recommended and provide competitive quotes for your work.
From £5,426
Trusted and professional extension builder in BT4. Experienced in all extension buildering work and keeping within budget and on quote. Extended li...
From £5,546
Ballantine building solutions is an established extension buildering business in BT4. We come highly recommended and provide competitive quotes for...
From £5,514
Trusted and professional extension builder in BT4. Experienced in all extension buildering work and keeping within budget and on quote. DGA have ma...
From £5,386
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
From £5,626
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £5,586
Trusted and professional extension builder in BT4. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lof...
From £5,634
Relax... you have found a reliable extension builder in BT4. Finch Construction NI is a friendly and reliable company based in BT4 who consider no ...

Concrete foundations range from the £5,386 (Mount Oriel Conversions & Extensions based in BT8) to £5,738 (AK Building Services based in BT8) in BT4.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in BT4 by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
"Concrete foundation" - BELFAST, job posted 02/11/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Concrete Foundations near Belfast | £23 | £161 |
| Concrete Foundations near Holywood | £23 | £159 |
| Concrete Foundations near Carryduff | £23 | £158 |
| Concrete Foundations near Comber | £22 | £160 |
| Concrete Foundations near Greenisland | £23 | £153 |
| Concrete Foundations near Ballygowan | £24 | £183 |
| Concrete Foundations near Bangor | £24 | £183 |
| Concrete Foundations near Bangor | £24 | £183 |
| Concrete Foundations near Carrickfergus | £23 | £158 |
| Concrete Foundations near Lisburn | £24 | £164 |
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 - £16,821

Two storey extension - £86,981

Build a timber frame extension - £25,321

Build a swimming pool - £80,321

Single storey extension - £41,416

Side return extension - £33,859

Install an RSJ - £1,521

Outbuilding - £9,321

Build a Mansard loft conversion - £51,321

Loft conversion - £27,383

Build a kitchen extension - £41,321

Hip to gable loft conversion - £41,321

Granny annexe - £86,321

Garden office - £9,321

Convert a Garage - £15,321

Garage - £17,821

Build a flat roof extension - £21,321

Build a dormer loft conversion - £41,321

Concrete foundations - £5,571

Convert a bungalow loft - £28,321

Convert a basement - £29,859