Cost to build a flat roof extension in N1

Flat roof extension cost in N1

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 N1?

A flat roof extension ranges from the cheapest of £21,848 (Regent Developments based in N1) 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 N1 by posting a job with HaMuch. We'll send it to extension builders in N1.

Estimates for flat roof extension near N1

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	£17,397
	Build a two storey extension	£87,846
	Build a timber frame extension	£25,897
	Install a swimming pool	£80,897
	Cost to build a single storey extension	£52,946
	Cost to build a side return extension	£40,344
	Install an RSJ	£2,097
	Build an outbuilding	£9,897
	Build a mansard loft conversion	£51,897
	Cost of a loft conversion	£32,787
	Build a kitchen extension	£41,897
	Build a hip to gable loft conversion	£41,897
	Build a granny annexe	£86,897
	Build a garden office	£9,897
	Convert a garage	£15,897
	Build a new garage	£18,397
	Build a flat roof extension	£21,897
	Build a dormer loft conversion	£41,897
	Lay a concrete foundation	£6,147
	Convert a bungalow loft	£28,897
	Basement conversion cost	£36,344

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
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
Ant-works, London, Surrey, 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
Master Build Team, Kemp House,, 152-160 city road, London, Greater London, EC1V	£21,848
Cadway Group Ltd, Kemp House, 160 City Road, London, Greater London, EC1V	£21,848
TP Building & Development Services Limited, Greater London, EC1V	£21,944
Redway Construction, London, Greater London, EC1V	£21,848
Miah Designs and Build, Greater London, EC1V	£21,944
PAD, Greater London, EC1V	£21,944
Equitable Property & Financial Services LTD, Greater London, EC1V	£21,944
Master Build Team, Greater London, EC1V	£21,944
MM Construction Group, 152-160 City Road, London, Greater London, EC1V	£21,848
Alkemist Build and Decorate, Kemp House, 160 City Road,, London, Londonderry, EC1V	£21,848
Aviary Property, Kent, EC1V	£21,944
Reltic Project, Londonderry, EC1V	£21,944
Uno contract limited, Greater London, EC1V	£21,944
Eastgrand Limited, Greater London, EC1V	£21,944

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Flat roof extension cost in N1

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Flat roof extension cost in N1

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