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From £86,496
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Building a granny annexe ranges from £86,496 (Ballygrange Contracts based in BT34) to £86,496 (Ballygrange Contracts based in BT34), 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 Newcastle by posting a job with HaMuch. We will send it to extension builders in Newcastle who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Kilkeel | £28 | £182 |
| Granny Annexe near Ballynahinch | £19 | £189 |
| Granny Annexe near Banbridge | £29 | £205 |
| Granny Annexe near Saintfield | £23 | £162 |
| Granny Annexe near Portaferry | £22 | £164 |
| Granny Annexe near Hillsborough and Culcavy | £25 | £170 |
| Granny Annexe near Lisburn | £24 | £164 |
| Granny Annexe near Carryduff | £23 | £158 |
| Granny Annexe near Waringstown | £23 | £167 |
| Granny Annexe near Maghaberry | £31 | £205 |
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 - £16,996

Two storey extension - £87,244

Build a timber frame extension - £25,496

Build a swimming pool - £80,496

Single storey extension - £44,920

Side return extension - £35,830

Install an RSJ - £1,696

Outbuilding - £9,496

Build a Mansard loft conversion - £51,496

Loft conversion - £29,025

Build a kitchen extension - £41,496

Hip to gable loft conversion - £41,496

Granny annexe - £86,496

Garden office - £9,496

Convert a Garage - £15,496

Garage - £17,996

Build a flat roof extension - £21,496

Build a dormer loft conversion - £41,496

Concrete foundations - £5,746

Convert a bungalow loft - £28,496

Convert a basement - £31,830