Cost to build a flat roof extension in NW11

Flat roof extension cost in NW11

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 NW11?

A flat roof extension ranges from the cheapest of £21,848 (Riverstone 13 Ltd based in NW11) to the dearest of £21,952 (Swiftdale Developments Ltd based in NW11), 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 NW11 by posting a job with HaMuch. We'll send it to extension builders in NW11.

Estimates for flat roof extension near NW11

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	£17,394
	Build a two storey extension	£87,841
	Build a timber frame extension	£25,894
	Install a swimming pool	£80,894
	Cost to build a single storey extension	£52,882
	Cost to build a side return extension	£40,308
	Install an RSJ	£2,094
	Build an outbuilding	£9,894
	Build a mansard loft conversion	£51,894
	Cost of a loft conversion	£32,757
	Build a kitchen extension	£41,894
	Build a hip to gable loft conversion	£41,894
	Build a granny annexe	£86,894
	Build a garden office	£9,894
	Convert a garage	£15,894
	Build a new garage	£18,394
	Build a flat roof extension	£21,894
	Build a dormer loft conversion	£41,894
	Lay a concrete foundation	£6,144
	Convert a bungalow loft	£28,894
	Basement conversion cost	£36,308

Business name	Flat roof extension cost
Riverstone 13 Ltd, 654 Finchley Road, London, Greater London, NW11	£21,848
Swiftdale Developments Ltd, Golders Green, NW11	£21,952
Fresh home builders UK LTD, Greater London, Nw11	£21,944
Fresh home builders UK LTD, London, Greater London, Nw11	£21,848
Kensington Green Ltd, 16A North End Road, London, NW11	£21,848
NK Design and Build, Greater London, NW11	£21,944
PearTree Homes, Greater London, NW11	£21,944
Coraff Flooring, 51 The Market Place, Falloden Way, Londo, NW11	£21,848
dc Designing Centre, Londonderry, nw2	£21,944
Citadel Design & Construction, 165 Granville Road, London, Greater London, NW2	£21,848
I Builder London Ltd., Londonderry, NW2	£21,944
BBG Constructions LTD, 55 Cotswold Gardens, London, Greater London, NW2	£21,848
Upscale Construction group, Greater London, NW4	£21,944
TKN BUILDERS & DEVELOPERS, Golders Green, NW11	£21,864
M R C Plumbing & Heating Ltd, 38 Renters Avenue, London, Greater Londo, NW4	£21,944
B. S. D. Design & Build Ltd, London, NW4	£21,888
SINCLAIR BUILDERS, Brent Cross, NW4	£21,864
Proficiency, 663 Finchley Road, London, Greater London, NW2	£21,848
Buildwiseonecompanyfoursolutions Ltd., London, Londonderry, N3	£21,848
Anahita Design and Development, Clitterhouse Farm House, 60 Claremont Road, London, NW2	£21,848
Anahita Design and Development, London, NW2	£21,944
L Sinaj Construction Ltd, Cricklewood, NW2	£21,864
Ivy Project Management, London, NW2	£21,848
Ivy Project Management, London, NW2	£21,944
BestDecorLondonLtd, Greater London, N3	£21,944

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Flat roof extension cost in NW11

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Flat roof extension cost in NW11

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