From £86,632
Taggart Homes - The Designer Builder are here to help customers who need an Extension Builder in BT48. We offer a competitive rate to complete all ...

Building a granny annexe ranges from £86,632 (Taggart Homes - The Designer Builder based in BT47) to £86,632 (Taggart Homes - The Designer Builder based in BT47), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in BT48 by posting a job with HaMuch. We will send it to extension builders in BT48 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Strathfoyle | £24 | £190 |
| Granny Annexe near Culmore | £24 | £190 |
| Granny Annexe near Newbuildings | £24 | £190 |
| Granny Annexe near Londonderry | £24 | £190 |
| Granny Annexe near Eglinton | £25 | £204 |
| Granny Annexe near Strabane | £30 | £240 |
| Granny Annexe near Dungiven | £22 | £190 |
| Granny Annexe near Coleraine | £23 | £201 |
| Granny Annexe near Magherafelt | £30 | £238 |
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 - £17,132

Two storey extension - £87,448

Build a timber frame extension - £25,632

Build a swimming pool - £80,632

Single storey extension - £47,640

Side return extension - £37,360

Install an RSJ - £1,832

Outbuilding - £9,632

Build a Mansard loft conversion - £51,632

Loft conversion - £30,300

Build a kitchen extension - £41,632

Hip to gable loft conversion - £41,632

Granny annexe - £86,632

Garden office - £9,632

Convert a Garage - £15,632

Garage - £18,132

Build a flat roof extension - £21,632

Build a dormer loft conversion - £41,632

Concrete foundations - £5,882

Convert a bungalow loft - £28,632

Convert a basement - £33,360