From £21,896
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,848
Need to find an Extension Builder near you for all your extension buildering work?
ANWEN CONSTRUCTION provides a local, trusted extension b...
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 £21,824
Experienced extension builder ready to quote for your work. AW Building Projects North East Ltd is the best extension builder in DL17. No obligatio...
From £21,760
Need an Extension Builder in DL17? K & J Property has been helping local clients (20 mile radius) with their extension buildering jobs for many yea...
From £21,736
Need an Extension Builder in DL17? Northern Roofline Solutions has been helping local clients (20 mile radius) with their extension buildering jobs...
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 £22,064
Croft-Hill Building & Joinery is a trusted extension builder serving customers in DL17 and the surrounding area. Contact us to today to get a compe...
From £22,104
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in DL17. Please contact us for a free, no obligation quote and c...

A flat roof extension ranges from the cheapest of £21,736 (Northern Roofline Solutions based in DL14) to the dearest of £22,264 (Heritage NE Ltd based in DL17), 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 DL17 by posting a job with HaMuch. We'll send it to extension builders in DL17.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Spennymoor | £38 | £248 |
| Build A Flat Roof Extension near Newton Aycliffe | £39 | £227 |
| Build A Flat Roof Extension near Bishop Auckland | £39 | £247 |
| Build A Flat Roof Extension near Durham | £47 | £267 |
| Build A Flat Roof Extension near Peterlee | £35 | £222 |
| Build A Flat Roof Extension near Darlington | £60 | £222 |
| Build A Flat Roof Extension near Stockton-on-Tees | £40 | £226 |
| Build A Flat Roof Extension near Billingham | £43 | £240 |
| Build A Flat Roof Extension near Chester-le-Street | £35 | £242 |
| Build A Flat Roof Extension near Seaham | £34 | £229 |
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 - £17,438

Two storey extension - £87,908

Build a timber frame extension - £25,938

Build a swimming pool - £80,938

Single storey extension - £53,768

Side return extension - £40,807

Install an RSJ - £2,138

Outbuilding - £9,938

Build a Mansard loft conversion - £51,938

Loft conversion - £33,173

Build a kitchen extension - £41,938

Hip to gable loft conversion - £41,938

Granny annexe - £86,938

Garden office - £9,938

Convert a Garage - £15,938

Garage - £18,438

Build a flat roof extension - £21,938

Build a dormer loft conversion - £41,938

Concrete foundations - £6,188

Convert a bungalow loft - £28,938

Convert a basement - £36,807