From £21,344
James Groarke
All works carried out to a very high standard, 30 years experience in all aspects of building works & general plumbing, honest reliable tradesm...
From £21,648
Colin Marsh
Trusted and professional extension builder in NR19. Experienced in all extension buildering work and keeping within budget and on quote. C MARSH BU...
From £21,896
Planet ozone ltd is an established and experienced local extension builder in NR19. Please contact us for a free, no obligation quote and competiti...
From £21,128
Richard MacDonald
Our team are a well established and well trusted company with many years experiance all roofing and building work completed to th...

A flat roof extension ranges from the cheapest of £21,128 (RM contractors based in Nr20) to the dearest of £21,896 (Planet ozone ltd based in Nr9), 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 NR19 by posting a job with HaMuch. We'll send it to extension builders in NR19.
"Flat roof extension" - NR19, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Dereham | £25 | £203 |
| Build A Flat Roof Extension near Breckland | £28 | £248 |
| Build A Flat Roof Extension near Broadland | £24 | £194 |
| Build A Flat Roof Extension near Norwich | £25 | £200 |
| Build A Flat Roof Extension near Thetford | £42 | £277 |
| Build A Flat Roof Extension near Kings Lynn & West Norfolk | £31 | £238 |
| Build A Flat Roof Extension near King's Lynn | £33 | £254 |
| Build A Flat Roof Extension near Great Yarmouth | £13 | £132 |
| Build A Flat Roof Extension near Bury St Edmunds | £34 | £251 |
| Build A Flat Roof Extension near Ely | £40 | £279 |
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 - £17,004

Two storey extension - £87,256

Build a timber frame extension - £25,504

Build a swimming pool - £80,504

Single storey extension - £45,080

Side return extension - £35,920

Install an RSJ - £1,704

Outbuilding - £9,504

Build a Mansard loft conversion - £51,504

Loft conversion - £29,100

Build a kitchen extension - £41,504

Hip to gable loft conversion - £41,504

Granny annexe - £86,504

Garden office - £9,504

Convert a Garage - £15,504

Garage - £18,004

Build a flat roof extension - £21,504

Build a dormer loft conversion - £41,504

Concrete foundations - £5,754

Convert a bungalow loft - £28,504

Convert a basement - £31,920