From £86,920
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,968
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £86,736
Need an Extension Builder in Bishop Auckland? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension buil...
From £87,064
Croft-Hill Building & Joinery is a trusted extension builder serving customers in Bishop Auckland and the surrounding area. Contact us to today to ...
From £87,040
Need to find an Extension Builder near you for all your extension buildering work?
SBC (BUILDERS) LIMITED provides a local, trusted extensi...
From £86,848
Need to find an Extension Builder near you for all your extension buildering work?
ANWEN CONSTRUCTION provides a local, trusted extension b...
From £86,760
Need an Extension Builder in Bishop Auckland? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs f...
From £86,824
Experienced extension builder ready to quote for your work. AW Building Projects North East Ltd is the best extension builder in Bishop Auckland. N...
From £87,000
Relax... you have found a reliable extension builder in Bishop Auckland. AA Paving is a friendly and reliable company based in Bishop Auckland who ...

Building a granny annexe ranges from £86,736 (Northern Roofline Solutions based in DL14) to £87,264 (Heritage NE Ltd based in DL17), 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 Bishop Auckland by posting a job with HaMuch. We will send it to extension builders in Bishop Auckland who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bishop Auckland | £39 | £247 |
| Granny Annexe near Spennymoor | £38 | £248 |
| Granny Annexe near Newton Aycliffe | £39 | £227 |
| Granny Annexe near Durham | £47 | £267 |
| Granny Annexe near Darlington | £60 | £222 |
| Granny Annexe near Chester-le-Street | £35 | £242 |
| Granny Annexe near Stanley | £34 | £242 |
| Granny Annexe near Consett | £33 | £241 |
| Granny Annexe near Stockton-on-Tees | £41 | £228 |
| Granny Annexe near Peterlee | £36 | £230 |
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 - £17,442

Two storey extension - £87,914

Build a timber frame extension - £25,942

Build a swimming pool - £80,942

Single storey extension - £53,848

Side return extension - £40,852

Install an RSJ - £2,142

Outbuilding - £9,942

Build a Mansard loft conversion - £51,942

Loft conversion - £33,210

Build a kitchen extension - £41,942

Hip to gable loft conversion - £41,942

Granny annexe - £86,942

Garden office - £9,942

Convert a Garage - £15,942

Garage - £18,442

Build a flat roof extension - £21,942

Build a dormer loft conversion - £41,942

Concrete foundations - £6,192

Convert a bungalow loft - £28,942

Convert a basement - £36,852