From £22,480
On time/ professional/ time served/trustworthy
From £21,896
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
2 reviews
From £22,264
30 years experience In building . Plastering and colour renders
"Totally unreliable, takes your money and doesn't finish the job." - NORTH EAST,reviewed 04/10/17, L S
From £22,104
RAINTON CONSTRUCTION LTD is an established and experienced local extension builder in DH9. Please contact us for a free, no obligation quote and co...
From £22,912
Trusted General Builders in Durham From small fixes to full renovations, Radici Construction delivers quality workmanship, clear communication,...
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 £21,808
ANDREW HUNTER BUILDING SERVICES is an established and experienced local extension builder in DH9. Please contact us for a free, no obligation quote...
From £21,040
Member since July 2020
I have over 40 years experience in the field of construction. Thank you and I hope I will be of service to you.
From £21,784
Trusted and professional extension builder in DH9. Experienced in all extension buildering work and keeping within budget and on quote. DGS Propert...

A flat roof extension ranges from the cheapest of £21,040 (OCC Construction based in NE10) to the dearest of £22,912 (Radici Construction North East Ltd based in DH1), 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 DH9 by posting a job with HaMuch. We'll send it to extension builders in DH9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Stanley | £34 | £242 |
| Build A Flat Roof Extension near Chester-le-Street | £35 | £242 |
| Build A Flat Roof Extension near Consett | £33 | £241 |
| Build A Flat Roof Extension near Gateshead | £33 | £236 |
| Build A Flat Roof Extension near Washington | £33 | £254 |
| Build A Flat Roof Extension near Durham | £47 | £267 |
| Build A Flat Roof Extension near Newcastle Upon Tyne | £33 | £236 |
| Build A Flat Roof Extension near Sunderland | £33 | £251 |
| Build A Flat Roof Extension near Hebburn | £34 | £246 |
| Build A Flat Roof Extension near Longbenton | £34 | £234 |
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 - £17,521

Two storey extension - £88,031

Build a timber frame extension - £26,021

Build a swimming pool - £81,021

Single storey extension - £55,416

Side return extension - £41,734

Install an RSJ - £2,221

Outbuilding - £10,021

Build a Mansard loft conversion - £52,021

Loft conversion - £33,945

Build a kitchen extension - £42,021

Hip to gable loft conversion - £42,021

Granny annexe - £87,021

Garden office - £10,021

Convert a Garage - £16,021

Garage - £18,521

Build a flat roof extension - £22,021

Build a dormer loft conversion - £42,021

Concrete foundations - £6,271

Convert a bungalow loft - £29,021

Convert a basement - £37,734