From £8,976
Have worked in building industry for over 30 years contracts from government to private sector.
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 Portglenone. Experienced in all extension buildering work and keeping within budget and on quote. pur...
From £9,608
Need an Extension Builder in Portglenone? SF Carpentry has been helping local clients (20 mile radius) with their extension buildering jobs for man...

Garden offices range from the cheapest of £8,976 (Anak based in BT40) to the dearest of £9,608 (SF Carpentry based in BT51), 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 Portglenone by posting a job with HaMuch. We'll send it to extension builders in Portglenone.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Ballymoney | £21 | £187 |
| Garden Office near Coleraine | £23 | £201 |
| Garden Office near Ballyclare | £20 | £124 |
| Garden Office near Larne | £15 | £122 |
| Garden Office near Magherafelt | £30 | £238 |
| Garden Office near Crumlin | £26 | £194 |
| Garden Office near Dungiven | £22 | £190 |
| Garden Office near Carrickfergus | £23 | £158 |
| Garden Office near Greenisland | £23 | £153 |
| 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 - £16,878

Two storey extension - £87,067

Build a timber frame extension - £25,378

Build a swimming pool - £80,378

Single storey extension - £42,560

Side return extension - £34,503

Install an RSJ - £1,578

Outbuilding - £9,378

Build a Mansard loft conversion - £51,378

Loft conversion - £27,919

Build a kitchen extension - £41,378

Hip to gable loft conversion - £41,378

Granny annexe - £86,378

Garden office - £9,378

Convert a Garage - £15,378

Garage - £17,878

Build a flat roof extension - £21,378

Build a dormer loft conversion - £41,378

Concrete foundations - £5,628

Convert a bungalow loft - £28,378

Convert a basement - £30,503