From £9,920
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £9,760
Trusted and professional extension builder in Barnard Castle. Experienced in all extension buildering work and keeping within budget and on quote. ...
From £9,848
Need to find an Extension Builder near you for all your extension buildering work?
Victory Procurement Solutions provides a local, trusted...
From £9,632
Partek Site Services is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote...
From £9,760
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 £10,064
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 £9,848
Need to find an Extension Builder near you for all your extension buildering work?
ANWEN CONSTRUCTION provides a local, trusted extension b...
From £10,208
Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in Barnard Castle. No obligation free quotes an...
From £9,968
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Garden offices range from the cheapest of £9,632 (Partek Site Services based in DL2) to the dearest of £10,208 (Pidesigns based in DL1), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in Barnard Castle by posting a job with HaMuch. We'll send it to extension builders in Barnard Castle.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Bishop Auckland | £39 | £247 |
| Garden Office near Newton Aycliffe | £39 | £227 |
| Garden Office near Darlington | £60 | £222 |
| Garden Office near Spennymoor | £38 | £248 |
| Garden Office near Consett | £33 | £241 |
| Garden Office near Durham | £47 | £267 |
| Garden Office near Stanley | £34 | £242 |
| Garden Office near Chester-le-Street | £35 | £242 |
| Garden Office near Stockton-on-Tees | £41 | £228 |
| Garden Office 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