Cost to build a flat roof extension in Seven Sisters

Flat roof extension cost in Seven Sisters

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 Seven Sisters?

A flat roof extension ranges from the cheapest of £21,320 (ADD CONSTRUCTION (LONDON) LTD based in N15) to the dearest of £21,944 (Unique Design Projects Ltd based in N15), 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 Seven Sisters by posting a job with HaMuch. We'll send it to extension builders in Seven Sisters.

Estimates for flat roof extension near Seven Sisters

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
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	Job	Estimate
	Underpinning a house	£17,368
	Build a two storey extension	£87,802
	Build a timber frame extension	£25,868
	Install a swimming pool	£80,868
	Cost to build a single storey extension	£52,363
	Cost to build a side return extension	£40,017
	Install an RSJ	£2,068
	Build an outbuilding	£9,868
	Build a mansard loft conversion	£51,868
	Cost of a loft conversion	£32,514
	Build a kitchen extension	£41,868
	Build a hip to gable loft conversion	£41,868
	Build a granny annexe	£86,868
	Build a garden office	£9,868
	Convert a garage	£15,868
	Build a new garage	£18,368
	Build a flat roof extension	£21,868
	Build a dormer loft conversion	£41,868
	Lay a concrete foundation	£6,118
	Convert a bungalow loft	£28,868
	Basement conversion cost	£36,017

Business name	Flat roof extension cost
Greg's Builders, Seven Sisters, N15	£21,888
Building Noer General Art Ltd, Londra, N15	£21,848
Unique Design Projects Ltd, Greater London, N15	£21,944
ADD CONSTRUCTION (LONDON) LTD, London, N15	£21,320
F, Londonderry, n15	£21,944
Build 4 London, 77 Lealand Road, LONDON, Greater London, N15	£21,848
Azzep Building Services, Seven Sisters, N15	£21,888
M Collins Builders Ltd, London, N4	£21,944
GG CONSTRUCTION LTD, Tottenham, N17	£21,864
KJV CONSTRUCTION LTD, Tottenham, N17	£21,864
BM Lofts Limited, London, N4	£21,888
Five Star Builder, Stamford Hill, N16	£21,888
OAKWOOD CONSTRUCTION UK LTD, Wood Green, N22	£21,864
SSS Brothers Limited, Wood Green, London, Londonderry, N15	£21,848
D Keighley Project Management Ltd, Greater London, n16	£21,944
Nicky Price, Greater London, N17	£21,944
Fine Loft Construction, London, N22	£21,888
B&H Design Construction LTD, Greater London, N17	£21,944
Top Class Roofing & Guttering Services, London, N17	£21,888
MSN Pyramid Construction Ltd, Tottenham, N17	£21,888
Barnaby Reynolds Design., London, Greater London, N16	£21,848
Douglas & Davis Consultant Ltd, Tottenham, N17	£21,880
Concept Design Builders, London, Greater London, N17	£21,848
JMP Contractors & Engineers, 12A Baronet Grove, London, Greater London, N17	£21,848
Maddison & Sons, Greater London, N16	£21,944

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Flat roof extension cost in Seven Sisters

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Flat roof extension cost in Seven Sisters

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