T.I Building is a trusted extension builder serving customers in BT28 and the surrounding area. Contact us to today to get a competitive quote for ...
From £9,336
Trusted and professional extension builder in BT28. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lo...
From £9,384
Relax... you have found a reliable extension builder in BT28. Finch Construction NI is a friendly and reliable company based in BT28 who consider n...

Garden offices range from the cheapest of £9,336 (Belfast Loft Company based in BT17) to the dearest of £9,400 (T.I Building based in BT28), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in BT28 by posting a job with HaMuch. We'll send it to extension builders in BT28.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Lisburn | £24 | £164 |
| Garden Office near Hillsborough and Culcavy | £25 | £170 |
| Garden Office near Maghaberry | £31 | £205 |
| Garden Office near Carryduff | £23 | £158 |
| Garden Office near Crumlin | £26 | £194 |
| Garden Office near Belfast | £23 | £161 |
| Garden Office near Waringstown | £23 | £167 |
| Garden Office near Saintfield | £23 | £162 |
| Garden Office near Ballynahinch | £19 | £189 |
| Garden Office 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 - £16,873

Two storey extension - £87,060

Build a timber frame extension - £25,373

Build a swimming pool - £80,373

Single storey extension - £42,467

Side return extension - £34,450

Install an RSJ - £1,573

Outbuilding - £9,373

Build a Mansard loft conversion - £51,373

Loft conversion - £27,875

Build a kitchen extension - £41,373

Hip to gable loft conversion - £41,373

Granny annexe - £86,373

Garden office - £9,373

Convert a Garage - £15,373

Garage - £17,873

Build a flat roof extension - £21,373

Build a dormer loft conversion - £41,373

Concrete foundations - £5,623

Convert a bungalow loft - £28,373

Convert a basement - £30,450