From £9,640
Lee Construction (LDG) Ltd is a trusted extension builder serving customers in DL10 and the surrounding area. Contact us to today to get a competit...
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 £9,728
GURKHA CONSTRUCTION SVCS LTD is a trusted extension builder serving customers in DL10 and the surrounding area. Contact us to today to get a compet...
From £9,632
Partek Site Services is an established and experienced local extension builder in DL10. Please contact us for a free, no obligation quote and compe...
From £9,760
Trusted and professional extension builder in DL10. Experienced in all extension buildering work and keeping within budget and on quote. D & G Buil...
From £9,720
S & K Windows are here to help customers who need an Extension Builder in DL10. We offer a competitive rate to complete all your extension builderi...
From £10,208
Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in DL10. No obligation free quotes and many hap...
From £9,872
Hi I'm darren
I'm a fully qualified time served joiner I have been doing it for 30 years and have been self employed for 12 years ...
From £9,880
Relax... you have found a reliable extension builder in DL10. Under Pressure is a friendly and reliable company based in DL10 who consider no job a...
From £9,792
Relax... you have found a reliable extension builder in DL10. Darlington Building Services is a friendly and reliable company based in DL10 who con...

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 DL10 by posting a job with HaMuch. We'll send it to extension builders in DL10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Garden Office near Darlington | £53 | £194 |
| Garden Office near Newton Aycliffe | £34 | £200 |
| Garden Office near Ingleby Barwick | £36 | £202 |
| Garden Office near Bishop Auckland | £34 | £218 |
| Garden Office near Stockton-on-Tees | £35 | £201 |
| Garden Office near Thornaby-on-Tees | £36 | £202 |
| Garden Office near Spennymoor | £33 | £220 |
| Garden Office near Billingham | £37 | £208 |
| Garden Office near Middlesbrough | £36 | £202 |
| Garden Office near Eston | £35 | £215 |
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 - £17,308

Two storey extension - £87,712

Build a timber frame extension - £25,808

Build a swimming pool - £80,808

Single storey extension - £51,160

Side return extension - £39,340

Install an RSJ - £2,008

Outbuilding - £9,808

Build a Mansard loft conversion - £51,808

Loft conversion - £31,950

Build a kitchen extension - £41,808

Hip to gable loft conversion - £41,808

Granny annexe - £86,808

Garden office - £9,808

Convert a Garage - £15,808

Garage - £18,308

Build a flat roof extension - £21,808

Build a dormer loft conversion - £41,808

Concrete foundations - £6,058

Convert a bungalow loft - £28,808

Convert a basement - £35,340