Relax... you have found a reliable extension builder in BT12. SM Plumbing & Heating is a friendly and reliable company based in BT12 who consider n...
From £25,336
Trusted and professional extension builder in BT12. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lo...
From £25,176
Trusted and professional extension builder in BT12. Experienced in all extension buildering work and keeping within budget and on quote. Extended l...

A timber frame extension built in BT12 typically ranges from £25,176 (Extended living by Gilbert-Ash based in BT12) to £25,368 (SM Plumbing & Heating based in BT7), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension 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 a timber frame extension in BT12 by posting a job with HaMuch and we'll send it to extension builders in BT12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Belfast | £23 | £161 |
| Build A Timber Frame Extension near Carryduff | £23 | £158 |
| Build A Timber Frame Extension near Holywood | £23 | £159 |
| Build A Timber Frame Extension near Lisburn | £24 | £164 |
| Build A Timber Frame Extension near Greenisland | £23 | £153 |
| Build A Timber Frame Extension near Comber | £22 | £160 |
| Build A Timber Frame Extension near Hillsborough and Culcavy | £25 | £170 |
| Build A Timber Frame Extension near Crumlin | £26 | £194 |
| Build A Timber Frame Extension near Ballygowan | £24 | £183 |
| Build A Timber Frame Extension near Saintfield | £23 | £162 |
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 - £16,793

Two storey extension - £86,940

Build a timber frame extension - £25,293

Build a swimming pool - £80,293

Single storey extension - £40,867

Side return extension - £33,550

Install an RSJ - £1,493

Outbuilding - £9,293

Build a Mansard loft conversion - £51,293

Loft conversion - £27,125

Build a kitchen extension - £41,293

Hip to gable loft conversion - £41,293

Granny annexe - £86,293

Garden office - £9,293

Convert a Garage - £15,293

Garage - £17,793

Build a flat roof extension - £21,293

Build a dormer loft conversion - £41,293

Concrete foundations - £5,543

Convert a bungalow loft - £28,293

Convert a basement - £29,550