Trusted and professional extension builder in DL3. Experienced in all extension buildering work and keeping within budget and on quote. D & G Build...
From £22,208
Experienced extension builder ready to quote for your work. pidesigns is the best extension builder in DL3. No obligation free quotes and many happ...

A flat roof extension ranges from the cheapest of £21,760 (D & G Builders based in DL3) to the dearest of £22,208 (Pidesigns based in DL1), 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 DL3 by posting a job with HaMuch. We'll send it to extension builders in DL3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Darlington | £60 | £222 |
| Build A Flat Roof Extension near Newton Aycliffe | £38 | £225 |
| Build A Flat Roof Extension near Stockton-on-Tees | £41 | £228 |
| Build A Flat Roof Extension near Bishop Auckland | £38 | £248 |
| Build A Flat Roof Extension near Ingleby Barwick | £41 | £228 |
| Build A Flat Roof Extension near Thornaby-on-Tees | £42 | £231 |
| Build A Flat Roof Extension near Spennymoor | £37 | £249 |
| Build A Flat Roof Extension near Billingham | £44 | £242 |
| Build A Flat Roof Extension near Middlesbrough | £43 | £236 |
| Build A Flat Roof Extension near Eston | £42 | £241 |
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 - £17,484

Two storey extension - £87,976

Build a timber frame extension - £25,984

Build a swimming pool - £80,984

Single storey extension - £54,680

Side return extension - £41,320

Install an RSJ - £2,184

Outbuilding - £9,984

Build a Mansard loft conversion - £51,984

Loft conversion - £33,600

Build a kitchen extension - £41,984

Hip to gable loft conversion - £41,984

Granny annexe - £86,984

Garden office - £9,984

Convert a Garage - £15,984

Garage - £18,484

Build a flat roof extension - £21,984

Build a dormer loft conversion - £41,984

Concrete foundations - £6,234

Convert a bungalow loft - £28,984

Convert a basement - £37,320