Cost to build a flat roof extension in W5

Flat roof extension cost in W5

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 W5?

A flat roof extension ranges from the cheapest of £21,600 (CHURCHWOOD MANAGEMENT LTD based in W13) to the dearest of £21,944 (Dream House 360 Ltd based in W5), 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 W5 by posting a job with HaMuch. We'll send it to extension builders in W5.

Estimates for flat roof extension near W5

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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Can you walk on a flat roof extension?
What insulation do I need for a flat roof extension?

	Job	Estimate
	Underpinning a house	£17,381
	Build a two storey extension	£87,822
	Build a timber frame extension	£25,881
	Install a swimming pool	£80,881
	Cost to build a single storey extension	£52,626
	Cost to build a side return extension	£40,164
	Install an RSJ	£2,081
	Build an outbuilding	£9,881
	Build a mansard loft conversion	£51,881
	Cost of a loft conversion	£32,637
	Build a kitchen extension	£41,881
	Build a hip to gable loft conversion	£41,881
	Build a granny annexe	£86,881
	Build a garden office	£9,881
	Convert a garage	£15,881
	Build a new garage	£18,381
	Build a flat roof extension	£21,881
	Build a dormer loft conversion	£41,881
	Lay a concrete foundation	£6,131
	Convert a bungalow loft	£28,881
	Basement conversion cost	£36,164

Business name	Flat roof extension cost
NK Property Renovations Ltd, London, Greater London, W5	£21,840
Dream House 360 Ltd, Buckinghamshire, W5	£21,944
Build & Decor, Greater London, W5	£21,944
Bricks Republic Limited, Londonderry, W5	£21,944
S. A. W. Building Contractors Ltd., S A W Building Contractors Ltd, 46-48 St. Marys Road, London, Greater London, W5	£21,840
Decozest Ltd, London, W5	£21,944
Demand Recruitment Services Ltd, Greater London, W5	£21,944
WIT CONSTRUCTION, Ealing, W5	£21,864
Detail D Limited, London, W5	£21,888
CHURCHWOOD MANAGEMENT LTD, London, W13	£21,600
Kensington Maintenance Ltd, West Ealing, W13	£21,888
SA BUILD SOLUTIONS LTD, London, Greater London, W13	£21,840
Decorators, Builders, West Ealing, W13	£21,888
Qualtak Limited, Greater London, W3	£21,944
Allen & Allen, London, W13	£21,944
Project 1 Design & Build, Ealing, Greater London, W13	£21,840
Stark Design & Build, Acton, W3	£21,888
Tom Corrigan Building & Decorating, West Ealing, W13	£21,888
MoreSpace, Ealing, London, Greater London, W5	£21,840
Pristine Projects Ltd, Greater London, W13	£21,944
Polish Builders Union Ltd, West Ealing, W13	£21,888
Debonair Group, 72 Leighton Road, London, Greater London, W13	£21,840
The Build Design, Greater London, W5	£21,944
PJS Building & Maintenance Ltd, 14 Heathfield Road, London, Greater London, W3	£21,840
Marcin Builder, Ealing, W5	£21,864

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Flat roof extension cost in W5

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Flat roof extension cost in W5

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