Relax... you have found a reliable extension builder in BT15. SM Plumbing & Heating is a friendly and reliable company based in BT15 who consider n...
From £25,296
Ballantine building solutions is an established extension buildering business in BT15. We come highly recommended and provide competitive quotes fo...
From £25,384
Designco Ltd is an established extension buildering business in BT15. We come highly recommended and provide competitive quotes for your work.
...From £25,176
Trusted and professional extension builder in BT15. Experienced in all extension buildering work and keeping within budget and on quote. Extended l...

A timber frame extension built in BT15 typically ranges from £25,176 (Extended living by Gilbert-Ash based in BT12) to £25,384 (Designco Ltd based in BT36), 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 BT15 by posting a job with HaMuch and we'll send it to extension builders in BT15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Timber Frame Extension near Belfast | £23 | £161 |
| Build A Timber Frame Extension near Holywood | £23 | £159 |
| Build A Timber Frame Extension near Greenisland | £23 | £153 |
| Build A Timber Frame Extension near Carryduff | £23 | £158 |
| Build A Timber Frame Extension near Comber | £22 | £160 |
| Build A Timber Frame Extension near Lisburn | £24 | £164 |
| Build A Timber Frame Extension near Carrickfergus | £23 | £158 |
| Build A Timber Frame Extension near Ballyclare | £20 | £124 |
| Build A Timber Frame Extension near Ballygowan | £24 | £183 |
| Build A Timber Frame Extension near Crumlin | £26 | £194 |
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 - £16,806

Two storey extension - £86,959

Build a timber frame extension - £25,306

Build a swimming pool - £80,306

Single storey extension - £41,120

Side return extension - £33,693

Install an RSJ - £1,506

Outbuilding - £9,306

Build a Mansard loft conversion - £51,306

Loft conversion - £27,244

Build a kitchen extension - £41,306

Hip to gable loft conversion - £41,306

Granny annexe - £86,306

Garden office - £9,306

Convert a Garage - £15,306

Garage - £17,806

Build a flat roof extension - £21,306

Build a dormer loft conversion - £41,306

Concrete foundations - £5,556

Convert a bungalow loft - £28,306

Convert a basement - £29,693