Cost to build a flat roof extension in Islington

Flat roof extension cost in Islington

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 Islington?

A flat roof extension ranges from the cheapest of £21,776 (SH Enterprise based in EC1V) to the dearest of £21,944 (Upper Class Builders based in N1), 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 Islington by posting a job with HaMuch. We'll send it to extension builders in Islington.

Estimates for flat roof extension near Islington

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	£17,391
	Build a two storey extension	£87,836
	Build a timber frame extension	£25,891
	Install a swimming pool	£80,891
	Cost to build a single storey extension	£52,811
	Cost to build a side return extension	£40,269
	Install an RSJ	£2,091
	Build an outbuilding	£9,891
	Build a mansard loft conversion	£51,891
	Cost of a loft conversion	£32,724
	Build a kitchen extension	£41,891
	Build a hip to gable loft conversion	£41,891
	Build a granny annexe	£86,891
	Build a garden office	£9,891
	Convert a garage	£15,891
	Build a new garage	£18,391
	Build a flat roof extension	£21,891
	Build a dormer loft conversion	£41,891
	Lay a concrete foundation	£6,141
	Convert a bungalow loft	£28,891
	Basement conversion cost	£36,269

Business name	Flat roof extension cost
Upper Class Builders, London, N1	£21,944
Regent Developments, London, Greater London, N1	£21,848
PRG Extensions, Greater London, N1	£21,944
Ant-works, London, Surrey, N1	£21,848
PRG Extensions, 20-22 Wenlock Road, London, England, London, Greater London, N1	£21,848
Juxtacon Ltd, London, Greater London, N1	£21,848
Sandhill Bulding Solutions Ltd, Greater London, N1	£21,848
EB, London, EC1V	£21,888
CARTA NOVA - Architecture & Beyond, Greater London, N1	£21,944
CMT Ltd, Islington, N1	£21,888
Facit Homes, 3A Godson Street, London, Greater London, N1	£21,848
Cadway Group Ltd, Kemp House, 160 City Road, London, Greater London, EC1V	£21,848
MM Construction Group, 152-160 City Road, London, Greater London, EC1V	£21,848
TP Building & Development Services Limited, Greater London, EC1V	£21,944
Miah Designs and Build, Greater London, EC1V	£21,944
SH Enterprise, Moorfields Eye Hospital, EC1V	£21,776
Equitable Property & Financial Services LTD, Greater London, EC1V	£21,944
Master Build Team, Greater London, EC1V	£21,944
PAD, Greater London, EC1V	£21,944
Aviary Property, Kent, EC1V	£21,944
Master Build Team, Kemp House,, 152-160 city road, London, Greater London, EC1V	£21,848
Alkemist Build and Decorate, Kemp House, 160 City Road,, London, Londonderry, EC1V	£21,848
Reltic Project, Londonderry, EC1V	£21,944
Uno contract limited, Greater London, EC1V	£21,944
Redway Construction, London, Greater London, EC1V	£21,848

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Flat roof extension cost in Islington

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Flat roof extension cost in Islington

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