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T.I Building is a trusted extension builder serving customers in Maghaberry and the surrounding area. Contact us to today to get a competitive quot...
From £86,336
Trusted and professional extension builder in Maghaberry. Experienced in all extension buildering work and keeping within budget and on quote. Belf...
From £86,384
Relax... you have found a reliable extension builder in Maghaberry. Finch Construction NI is a friendly and reliable company based in Maghaberry wh...
From £86,448
Trusted and professional extension builder in Maghaberry. Experienced in all extension buildering work and keeping within budget and on quote. The ...

Building a granny annexe ranges from £86,336 (Belfast Loft Company based in BT17) to £87,560 (Build a Boiler based in BT67), 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 Maghaberry by posting a job with HaMuch. We will send it to extension builders in Maghaberry who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Maghaberry | £31 | £205 |
| Granny Annexe near Hillsborough and Culcavy | £25 | £170 |
| Granny Annexe near Lisburn | £24 | £164 |
| Granny Annexe near Waringstown | £23 | £167 |
| Granny Annexe near Crumlin | £26 | £194 |
| Granny Annexe near Carryduff | £23 | £158 |
| Granny Annexe near Banbridge | £29 | £205 |
| Granny Annexe near Belfast | £23 | £161 |
| Granny Annexe near Craigavon | £23 | £181 |
| Granny Annexe near Ballynahinch | £19 | £189 |
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 - £17,126

Two storey extension - £87,438

Build a timber frame extension - £25,626

Build a swimming pool - £80,626

Single storey extension - £47,512

Side return extension - £37,288

Install an RSJ - £1,826

Outbuilding - £9,626

Build a Mansard loft conversion - £51,626

Loft conversion - £30,240

Build a kitchen extension - £41,626

Hip to gable loft conversion - £41,626

Granny annexe - £86,626

Garden office - £9,626

Convert a Garage - £15,626

Garage - £18,126

Build a flat roof extension - £21,626

Build a dormer loft conversion - £41,626

Concrete foundations - £5,876

Convert a bungalow loft - £28,626

Convert a basement - £33,288