T.I Building is a trusted extension builder serving customers in BT29 and the surrounding area. Contact us to today to get a competitive quote for ...
Power Construction is an established and experienced local extension builder in BT29. Please contact us for a free, no obligation quote and competi...
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
Relax... you have found a reliable extension builder in BT29. SM Plumbing & Heating is a friendly and reliable company based in BT29 who consider n...
Been in business as 18 years alway put clients first and never had any combacks
Trusted and professional extension builder in BT29. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lo...
Ballantine building solutions is an established extension buildering business in BT29. We come highly recommended and provide competitive quotes fo...
Relax... you have found a reliable extension builder in BT29. Finch Construction NI is a friendly and reliable company based in BT29 who consider n...

Outbuilding costs in BT29 range from the cheapest of £9,136 (Mount Oriel Conversions & Extensions based in BT8) to the dearest of £10,560 (Build a Boiler based in BT67), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in BT29 by posting a job with HaMuch and we will send it to extension builders.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Outbuilding near Crumlin | £26 | £194 |
| Outbuilding near Maghaberry | £31 | £205 |
| Outbuilding near Lisburn | £24 | £164 |
| Outbuilding near Hillsborough and Culcavy | £25 | £170 |
| Outbuilding near Belfast | £23 | £161 |
| Outbuilding near Ballyclare | £20 | £124 |
| Outbuilding near Carryduff | £23 | £158 |
| Outbuilding near Waringstown | £23 | £167 |
| Outbuilding near Greenisland | £23 | £153 |
| Outbuilding 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 - £16,962

Two storey extension - £87,194

Build a timber frame extension - £25,462

Build a swimming pool - £80,462

Single storey extension - £44,248

Side return extension - £35,452

Install an RSJ - £1,662

Outbuilding - £9,462

Build a Mansard loft conversion - £51,462

Loft conversion - £28,710

Build a kitchen extension - £41,462

Hip to gable loft conversion - £41,462

Granny annexe - £86,462

Garden office - £9,462

Convert a Garage - £15,462

Garage - £17,962

Build a flat roof extension - £21,462

Build a dormer loft conversion - £41,462

Concrete foundations - £5,712

Convert a bungalow loft - £28,462

Convert a basement - £31,452