Cost to build a flat roof extension in EC2Y

Flat roof extension cost in EC2Y

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 EC2Y?

A flat roof extension ranges from the cheapest of £21,848 (Aylaa Exclusive based in EC1A) to the dearest of £21,944 (Londoner Building Ltd. based in EC1A), 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 EC2Y by posting a job with HaMuch. We'll send it to extension builders in EC2Y.

Estimates for flat roof extension near EC2Y

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	£52,818
	Cost to build a side return extension	£40,272
	Install an RSJ	£2,091
	Build an outbuilding	£9,891
	Build a mansard loft conversion	£51,891
	Cost of a loft conversion	£32,727
	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	£36,272

Business name	Flat roof extension cost
Aylaa Exclusive, 9 Newbury Street, london, Greater London, EC1A	£21,848
Londoner Building Ltd., Greater London, EC1A	£21,944
TOP CONSTRUCTION, Moorfields Eye Hospital, EC1V	£21,856
Fornia Build Ltd, Greater London, EC1V	£21,944
Fornia Build Ltd, London, Greater London, EC1V	£21,848
Venta Construction, 8 City Road, London, Greater London, EC1Y	£21,848
SCANDIIN, International House 24 Holborn Viaduct, London, Greater London, EC1A	£21,848
Flow Property Services, London, Greater London, EC4M	£21,848
Kovacs Construction Ltd, Greater London, EC1N	£21,944
Kovacs Construction Ltd, 4th Floor, 18 St. Cross Street, London, Greater London, EC1N	£21,848
SDL PKB, 107 - 111 Fleet street - London -, London, Ec4a	£21,848
Andrew Penny Construction, 63-66 Hatton Garden 5th floor Suite 23, London, Greater London, EC1N	£21,848
Oxford West, London, EC1N	£21,848
Omniform, Greater London, EC3V	£21,856
Dual City Building Contractors Limited, London, EC1V	£21,944
Eastgrand Limited, Greater London, EC1V	£21,944
Master Build Team, Greater London, EC1V	£21,944
Miah Designs and Build, Greater London, EC1V	£21,944
STAY STEEL, London, EC1V	£21,944
Redway Construction, London, Greater London, EC1V	£21,848
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
Aviary Property, Kent, EC1V	£21,944
PAD, Greater London, EC1V	£21,944

Extend your EC2Y with an extension

Flat roof extension cost in EC2Y

Estimates for common extension builder jobs in EC2Y;

Rates for other EC2Y trades

Flat roof extension cost in EC2Y

Get extension builder rates instantly