Cost to build a flat roof extension in NW4

Flat roof extension cost in NW4

A flat roof extension is a great way to add extra space to your home without splashing out on the costs of a pitched roof extension. Often exempt from planning permission rules, you can build a flat roof extension up to 3 metres in height as long as it's not visible from a road. But how much do they cost in NW4?

A flat roof extension ranges from the cheapest of £21,848 (Combit Constructuion based in NW4) to the dearest of £22,800 (Greenbuild maintenance sevices ltd based in NW4), 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 NW4 by posting a job with HaMuch. We'll send it to extension builders in NW4.

Estimates for flat roof extension near NW4

How much does a flat roof extension cost?
Flat roof extension cost per m2
Factors affecting the cost of flat roof extensions
Advantages and disadvantages of flat roofs
Which is cheaper: a flat roof or pitched roof?
How long does a flat roof extension take?
Do you need planning permission for a flat roof extension?
How long does a flat roof last?
Can you walk on a flat roof extension?
What insulation do I need for a flat roof extension?

	Job	Estimate
	Underpinning a house	£17,447
	Build a two storey extension	£87,920
	Build a timber frame extension	£25,947
	Install a swimming pool	£80,947
	Cost to build a single storey extension	£53,938
	Cost to build a side return extension	£40,902
	Install an RSJ	£2,147
	Build an outbuilding	£9,947
	Build a mansard loft conversion	£51,947
	Cost of a loft conversion	£33,252
	Build a kitchen extension	£41,947
	Build a hip to gable loft conversion	£41,947
	Build a granny annexe	£86,947
	Build a garden office	£9,947
	Convert a garage	£15,947
	Build a new garage	£18,447
	Build a flat roof extension	£21,947
	Build a dormer loft conversion	£41,947
	Lay a concrete foundation	£6,197
	Convert a bungalow loft	£28,947
	Basement conversion cost	£36,902

Business name	Flat roof extension cost
Combit Construction Ltd, Greater London, NW4	£21,944
Combit Constructuion, London, Greater London, NW4	£21,848
Greenbuild maintenance sevices ltd, London, NW4	£22,800
Upscale Construction group, Greater London, NW4	£21,944
B. S. D. Design & Build Ltd, London, NW4	£21,888
Saha Properties Ltd, Greater London, NW4	£21,944
AG design-build, Greater London, NW4	£21,944
SINCLAIR BUILDERS, Brent Cross, NW4	£21,864
M R C Plumbing & Heating Ltd, 38 Renters Avenue, London, Greater Londo, NW4	£21,944
Milkov and Son Construction, Greater London, NW4	£21,944
dc Designing Centre, Londonderry, nw2	£21,944
Bathrooms and kitchens specialist, West Midlands, NW9	£21,944
Golden Genesis Construction and Design, London, NW4	£21,944
Golden Genesis Construction and Design, London, NW4	£21,848
Carl Construction Limited, London, NW9	£21,944
Lifestyle D.sign, 374 Watford way,, London, Greater London, NW4	£21,848
Fresh home builders UK LTD, London, Greater London, Nw11	£21,848
Fresh home builders UK LTD, Greater London, Nw11	£21,944
Swiftdale Developments Ltd, Golders Green, NW11	£21,952
Hallpark Construction, Unit B2 Connaught Business Centre, Hyde Estate Rd, London, Greater London, NW9	£21,848
InConstruction Services Ltd, London, Greater London, NW9	£21,848
PearTree Homes, Greater London, NW11	£21,944
Arhiterra Design and Build Ltd, Greater London, NW9	£21,944
WHITE EAGLE CONSTRUCTION LTD, Colindale, NW9	£21,864
Space Dimensioned Ltd., Greater London, NW9	£21,944

Extend your NW4 with an extension

Flat roof extension cost in NW4

Estimates for common extension builder jobs in NW4;

Rates for other NW4 trades

Flat roof extension cost in NW4

Get extension builder rates instantly