From £9,432
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on
From £9,496
Trusted and professional extension builder in BT43. Experienced in all extension buildering work and keeping within budget and on quote. purdy buil...
From £9,296
Been in business as 18 years alway put clients first and never had any combacks
From £8,976
Have worked in building industry for over 30 years contracts from government to private sector.
From £9,376
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Garden offices range from the cheapest of £8,976 (Anak based in BT40) to the dearest of £9,496 (Purdy build based in bt53), 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 BT43 by posting a job with HaMuch. We'll send it to extension builders in BT43.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Ballyclare | £20 | £124 |
| Garden Office near Ballymoney | £21 | £187 |
| Garden Office near Magherafelt | £30 | £238 |
| Garden Office near Larne | £15 | £122 |
| Garden Office near Crumlin | £26 | £194 |
| Garden Office near Coleraine | £23 | £201 |
| Garden Office near Greenisland | £23 | £153 |
| Garden Office near Carrickfergus | £23 | £158 |
| Garden Office near Belfast | £23 | £161 |
| 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 - £16,815

Two storey extension - £86,973

Build a timber frame extension - £25,315

Build a swimming pool - £80,315

Single storey extension - £41,304

Side return extension - £33,796

Install an RSJ - £1,515

Outbuilding - £9,315

Build a Mansard loft conversion - £51,315

Loft conversion - £27,330

Build a kitchen extension - £41,315

Hip to gable loft conversion - £41,315

Granny annexe - £86,315

Garden office - £9,315

Convert a Garage - £15,315

Garage - £17,815

Build a flat roof extension - £21,315

Build a dormer loft conversion - £41,315

Concrete foundations - £5,565

Convert a bungalow loft - £28,315

Convert a basement - £29,796