Cost to build a flat roof extension in EC3V

Flat roof extension cost in EC3V

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 EC3V?

A flat roof extension ranges from the cheapest of £21,848 (Volute London based in EC4N) to the dearest of £21,944 (London Roof Gardens based in EC3V), 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 EC3V by posting a job with HaMuch. We'll send it to extension builders in EC3V.

Estimates for flat roof extension near EC3V

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	£17,394
	Build a two storey extension	£87,841
	Build a timber frame extension	£25,894
	Install a swimming pool	£80,894
	Cost to build a single storey extension	£52,875
	Cost to build a side return extension	£40,305
	Install an RSJ	£2,094
	Build an outbuilding	£9,894
	Build a mansard loft conversion	£51,894
	Cost of a loft conversion	£32,754
	Build a kitchen extension	£41,894
	Build a hip to gable loft conversion	£41,894
	Build a granny annexe	£86,894
	Build a garden office	£9,894
	Convert a garage	£15,894
	Build a new garage	£18,394
	Build a flat roof extension	£21,894
	Build a dormer loft conversion	£41,894
	Lay a concrete foundation	£6,144
	Convert a bungalow loft	£28,894
	Basement conversion cost	£36,305

Business name	Flat roof extension cost
Omniform, Greater London, EC3V	£21,856
London Roof Gardens, 30 The Leadenhall Building, 122 Leadenhall Street, London, Greater London, EC3V	£21,944
Volute London, London, Greater London, EC4N	£21,848
GenUp Digital, East Dunbartonshire, EC3M	£21,944
evolve property solutions, Unit 143, 155 Minories, London, Greater London, EC3N	£21,856
Shine Your Home, Shine Your Home Services, London, Greater London, E1	£21,856
Venta Construction, 8 City Road, London, Greater London, EC1Y	£21,848
Aylaa Exclusive, 9 Newbury Street, london, Greater London, EC1A	£21,848
Flow Property Services, London, Greater London, EC4M	£21,848
Londoner Building Ltd., Greater London, EC1A	£21,944
Pencil and Brick, Greater London, E1	£21,944
SDL PKB, 107 - 111 Fleet street - London -, London, Ec4a	£21,848
Fornia Build Ltd, Greater London, EC1V	£21,944
Fornia Build Ltd, London, Greater London, EC1V	£21,848
Space Design Construction Services Ltd, London, Greater London, SE1	£21,848
MakoExpert Ltd - Property Refurbishment Specialist, Greater London, EC2A	£21,944
Helix Group Ltd, London, EC2A	£21,944
TOP CONSTRUCTION, Moorfields Eye Hospital, EC1V	£21,856
BUILDCOM, Greater London, Ec2a	£21,944
Torrington, london, EC2A	£21,888
Kindred Elite, London, Hertfordshire, EC2A	£21,856
London Art Construction and Design, Greater London, EC2A	£21,944
Grandis Whim, Greater London, EC2A	£21,944
WECAN Associates, WECAN Associates, 86-90 Paul Street, London, Greater London, EC2A	£21,856
WECAN Associates, Greater London, EC2A	£21,944

Extend your EC3V with an extension

Flat roof extension cost in EC3V

Estimates for common extension builder jobs in EC3V;

Rates for other EC3V trades

Flat roof extension cost in EC3V

Get extension builder rates instantly