Cost to build a flat roof extension in EN4

Flat roof extension cost in EN4

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 EN4?

A flat roof extension ranges from the cheapest of £21,600 (Floor Sanding Specialists based in EN4) to the dearest of £22,632 (Artan Property Services Ltd based in N14), 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 EN4 by posting a job with HaMuch. We'll send it to extension builders in EN4.

Estimates for flat roof extension near EN4

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	£17,404
	Build a two storey extension	£87,856
	Build a timber frame extension	£25,904
	Install a swimming pool	£80,904
	Cost to build a single storey extension	£53,074
	Cost to build a side return extension	£40,416
	Install an RSJ	£2,104
	Build an outbuilding	£9,904
	Build a mansard loft conversion	£51,904
	Cost of a loft conversion	£32,847
	Build a kitchen extension	£41,904
	Build a hip to gable loft conversion	£41,904
	Build a granny annexe	£86,904
	Build a garden office	£9,904
	Convert a garage	£15,904
	Build a new garage	£18,404
	Build a flat roof extension	£21,904
	Build a dormer loft conversion	£41,904
	Lay a concrete foundation	£6,154
	Convert a bungalow loft	£28,904
	Basement conversion cost	£36,416

Business name	Flat roof extension cost
Roni Lofts Conversions Ltd, Barnet, EN4	£21,888
Home Projects, Barnet, EN4	£21,840
Refurb It All, 3 Mount Parade, Mount Pleasant, Cockfosters, London, Greater London, EN4	£21,848
New Finishes, Cockfosters, EN4	£21,888
The Building Company London, Hertfordshire, EN4	£21,848
Rafix Building, Cockfosters, EN4	£22,000
The Building Company London, Hertfordshire, EN4	£21,960
BT Projects London Ltd, Barnet, EN4	£21,960
Bt Projects London, Barnet, en4	£21,848
Homeland Building Ltd, Cockfosters, EN4	£21,888
C&CO Renovaiton, Greater London, EN4	£21,952
Wittick Building Ltd, Cockfosters, EN4	£21,888
R & I Builders, Cockfosters, EN4	£21,880
A Sparky Technical Building Services, East Barnet, Barnet, EN4	£21,864
ACME CONSTRUCTION LTD, Barnet, Greater London, EN5	£21,856
Floor Sanding Specialists, East Barnet, Barnet, EN4	£21,600
I Builder, New Barnet, EN5	£21,960
DRB International Ltd T/A Lofty Lofts, Barnet, EN4	£21,600
Pavillion Building Services, Cockfosters, EN4	£21,888
Din Floor, Barnet, EN5	£21,920
Nava Construction LTD, 48 Northway house, London, Greater London, N20	£21,848
Artan Property Services Ltd, London, N14	£22,632
AGK Building Services Ltd, Greater London, N14	£21,944
Artifex Building & Carpentry Limited, Southgate, N14	£21,944
Keenan Construction, North London Business Park, Building 3, London, Greater London, N11	£21,848

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Flat roof extension cost in EN4

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Flat roof extension cost in EN4

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