From £21,880
J.collinson is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote and comp...
From £21,816
DANNY WOOD BUILDERS LIMITED are here to help customers who need an Extension Builder in Barnard Castle. We offer a competitive rate to complete all...
From £21,736
Need an Extension Builder in Barnard Castle? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension build...
From £21,968
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,920
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,040
Need to find an Extension Builder near you for all your extension buildering work?
SBC (BUILDERS) LIMITED provides a local, trusted extensi...
From £21,632
Partek Site Services is an established and experienced local extension builder in Barnard Castle. Please contact us for a free, no obligation quote...
From £21,728
GURKHA CONSTRUCTION SVCS LTD is a trusted extension builder serving customers in Barnard Castle and the surrounding area. Contact us to today to ge...
From £22,064
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 £21,848
Need to find an Extension Builder near you for all your extension buildering work?
Victory Procurement Solutions provides a local, trusted...

A flat roof extension ranges from the cheapest of £21,632 (Partek Site Services based in DL2) to the dearest of £22,064 (Croft-Hill Building & Joinery based in DL15), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost 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 |
|---|---|---|
| Build A Flat Roof Extension near Bishop Auckland | £34 | £218 |
| Build A Flat Roof Extension near Newton Aycliffe | £34 | £200 |
| Build A Flat Roof Extension near Darlington | £53 | £194 |
| Build A Flat Roof Extension near Spennymoor | £33 | £220 |
| Build A Flat Roof Extension near Consett | £28 | £202 |
| Build A Flat Roof Extension near Durham | £42 | £236 |
| Build A Flat Roof Extension near Stanley | £29 | £206 |
| Build A Flat Roof Extension near Chester-le-Street | £31 | £213 |
| Build A Flat Roof Extension near Stockton-on-Tees | £35 | £201 |
| Build A Flat Roof Extension near Ingleby Barwick | £36 | £202 |
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 - £17,363

Two storey extension - £87,795

Build a timber frame extension - £25,863

Build a swimming pool - £80,863

Single storey extension - £52,264

Side return extension - £39,961

Install an RSJ - £2,063

Outbuilding - £9,863

Build a Mansard loft conversion - £51,863

Loft conversion - £32,468

Build a kitchen extension - £41,863

Hip to gable loft conversion - £41,863

Granny annexe - £86,863

Garden office - £9,863

Convert a Garage - £15,863

Garage - £18,363

Build a flat roof extension - £21,863

Build a dormer loft conversion - £41,863

Concrete foundations - £6,113

Convert a bungalow loft - £28,863

Convert a basement - £35,961