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 £86,760
Trusted and professional extension builder in Barnard Castle. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £86,848
Need to find an Extension Builder near you for all your extension buildering work?
Victory Procurement Solutions provides a local, trusted...
From £86,632
Partek Site Services is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote...
From £86,760
Need an Extension Builder in Barnard Castle? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs fo...
From £87,064
Croft-Hill Building & Joinery is a trusted extension builder serving customers in Barnard Castle and the surrounding area. Contact us to today to g...
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 £87,208
Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in Barnard Castle. No obligation free quotes an...
From £86,968
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 £86,632 (Partek Site Services based in DL2) to £87,208 (Pidesigns based in DL1), 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 Barnard Castle by posting a job with HaMuch. We will send it to extension builders in Barnard Castle who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Bishop Auckland | £39 | £247 |
| Granny Annexe near Newton Aycliffe | £39 | £227 |
| Granny Annexe near Darlington | £60 | £222 |
| Granny Annexe near Spennymoor | £38 | £248 |
| Granny Annexe near Consett | £33 | £241 |
| Granny Annexe near Durham | £47 | £267 |
| Granny Annexe near Stanley | £34 | £242 |
| Granny Annexe near Chester-le-Street | £35 | £242 |
| Granny Annexe near Stockton-on-Tees | £41 | £228 |
| Granny Annexe near Ingleby Barwick | £41 | £228 |
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 - £17,401

Two storey extension - £87,851

Build a timber frame extension - £25,901

Build a swimming pool - £80,901

Single storey extension - £53,016

Side return extension - £40,384

Install an RSJ - £2,101

Outbuilding - £9,901

Build a Mansard loft conversion - £51,901

Loft conversion - £32,820

Build a kitchen extension - £41,901

Hip to gable loft conversion - £41,901

Granny annexe - £86,901

Garden office - £9,901

Convert a Garage - £15,901

Garage - £18,401

Build a flat roof extension - £21,901

Build a dormer loft conversion - £41,901

Concrete foundations - £6,151

Convert a bungalow loft - £28,901

Convert a basement - £36,384