Cost to build a flat roof extension in WC1X

Flat roof extension cost in WC1X

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 WC1X?

A flat roof extension ranges from the cheapest of £21,848 (Otto & Mensah Build based in WC1N) to the dearest of £23,200 (Q Lofts and Extensions based in EC1R), 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 WC1X by posting a job with HaMuch. We'll send it to extension builders in WC1X.

Estimates for flat roof extension near WC1X

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?
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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	£17,458
	Build a two storey extension	£87,937
	Build a timber frame extension	£25,958
	Install a swimming pool	£80,958
	Cost to build a single storey extension	£54,162
	Cost to build a side return extension	£41,028
	Install an RSJ	£2,158
	Build an outbuilding	£9,958
	Build a mansard loft conversion	£51,958
	Cost of a loft conversion	£33,357
	Build a kitchen extension	£41,958
	Build a hip to gable loft conversion	£41,958
	Build a granny annexe	£86,958
	Build a garden office	£9,958
	Convert a garage	£15,958
	Build a new garage	£18,458
	Build a flat roof extension	£21,958
	Build a dormer loft conversion	£41,958
	Lay a concrete foundation	£6,208
	Convert a bungalow loft	£28,958
	Basement conversion cost	£37,028

Business name	Flat roof extension cost
Buildwiser, King's Cross, WC1X	£21,864
Q Lofts and Extensions , London , EC1R	£23,200
Otto & Mensah Build, 15 Lambs Conduit Street, London, WC1N	£21,848
JM Building Services, Hatton Garden, EC1N	£21,888
GD CONSTRUCTION, London, WC1X	£22,000
Citygate, London, WC1H	£21,944
Andrew Penny Construction, 63-66 Hatton Garden 5th floor Suite 23, London, Greater London, EC1N	£21,848
Oxford West, London, EC1N	£21,848
Pacho Build Ltd, 27 Old Gloucester Street, London, Greater London, wc1n	£21,848
FLAVIA CONDE, 27 Old Gloucester Street, London, Greater London, WC1N	£21,848
CK Constructions & Development Ltd, Russell Square, WC1N	£21,888
Longland Construction, Greater London, WC1N	£21,944
Kovacs Construction Ltd, 4th Floor, 18 St. Cross Street, London, Greater London, EC1N	£21,848
Kovacs Construction Ltd, Greater London, EC1N	£21,944
DeHome Studio, Greater London, N1	£21,944
Minton Builders LTD, Greater London, N1	£21,944
Crowngate Construction, Warwickshire, N1	£21,944
Centaurus Construction Limited, Greater London, N1	£21,944
Cedar Developments, West Lothian, N1	£21,944
Rabjohn Construction Ltd, South Yorkshire, N1	£21,944
Gordon Construction, Cambridgeshire, N1	£21,944
Novo London Design and Build, Greater London, N1	£21,944
NARCH Ltd, Greater London, WC1H	£21,944
TipTop Joinery & Build, London, Greater London, WC1V	£21,848
Facit Homes, 3A Godson Street, London, Greater London, N1	£21,848

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Flat roof extension cost in WC1X

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Flat roof extension cost in WC1X

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