Cost to build a flat roof extension in N5

Flat roof extension cost in N5

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 N5?

A flat roof extension ranges from the cheapest of £21,840 (Amastic Roofing Building and Scaffolding Services Ltd based in N16) to the dearest of £21,944 (E T W Building Services based in N5), 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 N5 by posting a job with HaMuch. We'll send it to extension builders in N5.

Estimates for flat roof extension near N5

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	£17,399
	Build a two storey extension	£87,848
	Build a timber frame extension	£25,899
	Install a swimming pool	£80,899
	Cost to build a single storey extension	£52,971
	Cost to build a side return extension	£40,359
	Install an RSJ	£2,099
	Build an outbuilding	£9,899
	Build a mansard loft conversion	£51,899
	Cost of a loft conversion	£32,799
	Build a kitchen extension	£41,899
	Build a hip to gable loft conversion	£41,899
	Build a granny annexe	£86,899
	Build a garden office	£9,899
	Convert a garage	£15,899
	Build a new garage	£18,399
	Build a flat roof extension	£21,899
	Build a dormer loft conversion	£41,899
	Lay a concrete foundation	£6,149
	Convert a bungalow loft	£28,899
	Basement conversion cost	£36,359

Business name	Flat roof extension cost
CAPITAL CONSTRUCTION LIMITED, Highbury, N5	£21,864
E T W Building Services, Greater London, N5	£21,944
DLER SINGH D S BUILDERS, Stamford Hill, N16	£21,864
COMPLETE BUILDING COMPANY, Stamford Hill, N16	£21,864
Brooks Builders & Decorators, London, N1	£21,856
Bok Services Ltd, Greater London, N7	£21,944
Nucleus Design Studio, London, N7	£21,944
Nucleus Design Studio, The Basement, 324 Liverpool Road, London, N7	£21,848
Mel Massey Studio, Greater London, N4	£21,944
London Trowel Co., Stamford Hill, N16	£21,888
Tedrex Ltd, London, N1	£21,848
CMT Ltd, Islington, N1	£21,888
Maddison & Sons, Greater London, N16	£21,944
Regent Developments, London, Greater London, N1	£21,848
My Plumbing & Heating Ltd, Greater London, N16	£21,944
Parkway Maintenance & Construction, London, N16	£21,944
Andreas Thomas Demetri, Holloway, N7	£21,888
ACAR BROTHERS, Greater London, N16	£21,944
Upper Class Builders, London, N1	£21,944
Brothers Group, London, N4	£21,944
FISKA DESIGN & BUILD, Stamford Hill, N16	£21,864
Amastic Roofing Building and Scaffolding Services Ltd, 33B Darville Road, London, Greater Londo, N16	£21,840
D.W Baker, Holloway, N7	£21,888
Thermodynamic Building Services Ltd, Hackney, E8	£21,888
Five Star Builder, Stamford Hill, N16	£21,888

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Flat roof extension cost in N5

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Flat roof extension cost in N5

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