Cost to build a flat roof extension in W1T

Flat roof extension cost in W1T

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 W1T?

A flat roof extension ranges from the cheapest of £21,848 (Atlant Construction based in W1T) to the dearest of £21,944 (Capatus properties ltd based in W1W), 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 W1T by posting a job with HaMuch. We'll send it to extension builders in W1T.

Estimates for flat roof extension near W1T

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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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	£17,405
	Build a two storey extension	£87,857
	Build a timber frame extension	£25,905
	Install a swimming pool	£80,905
	Cost to build a single storey extension	£53,099
	Cost to build a side return extension	£40,431
	Install an RSJ	£2,105
	Build an outbuilding	£9,905
	Build a mansard loft conversion	£51,905
	Cost of a loft conversion	£32,859
	Build a kitchen extension	£41,905
	Build a hip to gable loft conversion	£41,905
	Build a granny annexe	£86,905
	Build a garden office	£9,905
	Convert a garage	£15,905
	Build a new garage	£18,405
	Build a flat roof extension	£21,905
	Build a dormer loft conversion	£41,905
	Lay a concrete foundation	£6,155
	Convert a bungalow loft	£28,905
	Basement conversion cost	£36,431

Business name	Flat roof extension cost
Atlant Construction, London, Greater London, W1T	£21,848
Grand Phase Ltd, 85 Great Portland Street, London, Greater London, W1W	£21,848
Capatus properties ltd, Greater London, W1W	£21,944
Italian Soft Leather Purses, Greater London, W1W	£21,944
Design 2000 UK Ltd, Greater London, W1W	£21,944
Teammax LTD, 85 Great Portland Street, London, Greater London, W1W	£21,848
Eternal Solutions, Greater London, W1W	£21,944
JK Doors, Fitzrovia, W1W	£21,888
KBB Master Builder Ltd, Greater London, W1W	£21,944
KBB Master Builder LTD, Greater London, W1W	£21,944
UCS UK Ltd, Greater London, W1W	£21,944
JAY Executinos LTD, London, W1W	£21,944
Hestia Contractors Ltd, 207 Regent Street, London, Greater London, W1B	£21,848
CORRECTBUILDIV.LTD, Greater London, W1B	£21,944
Guildon LTD, Greater London, w1b	£21,944
NWL BUILDERS LTD, 4th Floor, Silverstream House, 45 Fitzroy Street, Fitzrovia, London, Greater London, W1T	£21,848
Simone Pinducciu - Mesoni Ltd, Greater London, W1W	£21,944
plansing, london, W1W	£21,888
Sehem Design, london, W1F	£21,944
Cornerstone, Greater London, W1F	£21,944
Big Mamma, Greater London, W1F	£21,944
Starfish Properties, 14 Hanover Street, 3rd Floor, London, W1S	£21,848
Dominic Payte - Design & Build, 14 Hanover Square, Mayfair, Greater London, W1S	£21,848
FLAVIA CONDE, 27 Old Gloucester Street, London, Greater London, WC1N	£21,848
Pacho Build Ltd, 27 Old Gloucester Street, London, Greater London, wc1n	£21,848

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Flat roof extension cost in W1T

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Flat roof extension cost in W1T

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