From £86,640
With extensive extension buildering experience, we provide reliable, high-quality workmanship at competitive prices. G K Contracts Building & Joine...
From £86,408
Trusted and professional extension builder in BT35. Experienced in all extension buildering work and keeping within budget and on quote. JDL Contra...
From £86,536
Experienced extension builder ready to quote for your work. Terry Design is the best extension builder in BT35. No obligation free quotes and many ...
From £86,360
Power Construction is an established and experienced local extension builder in BT35. Please contact us for a free, no obligation quote and competi...
From £86,448
Trusted and professional extension builder in BT35. Experienced in all extension buildering work and keeping within budget and on quote. The Method...

Building a granny annexe ranges from £86,360 (Power Construction based in BT65) to £86,640 (G K Contracts Building & Joinery based in BT32), 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 BT35 by posting a job with HaMuch. We will send it to extension builders in BT35 who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Banbridge | £29 | £205 |
| Granny Annexe near Craigavon | £23 | £181 |
| Granny Annexe near Kilkeel | £28 | £182 |
| Granny Annexe near Waringstown | £23 | £167 |
| Granny Annexe near Maghaberry | £31 | £205 |
| Granny Annexe near Hillsborough and Culcavy | £25 | £170 |
| Granny Annexe near Coalisland | £27 | £223 |
| Granny Annexe near Lisburn | £24 | £164 |
| Granny Annexe near Ballynahinch | £19 | £189 |
| Granny Annexe near Dungannon | £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 - £16,978

Two storey extension - £87,218

Build a timber frame extension - £25,478

Build a swimming pool - £80,478

Single storey extension - £44,568

Side return extension - £35,632

Install an RSJ - £1,678

Outbuilding - £9,478

Build a Mansard loft conversion - £51,478

Loft conversion - £28,860

Build a kitchen extension - £41,478

Hip to gable loft conversion - £41,478

Granny annexe - £86,478

Garden office - £9,478

Convert a Garage - £15,478

Garage - £17,978

Build a flat roof extension - £21,478

Build a dormer loft conversion - £41,478

Concrete foundations - £5,728

Convert a bungalow loft - £28,478

Convert a basement - £31,632