Cost to build a flat roof extension in TW8

Flat roof extension cost in TW8

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 TW8?

A flat roof extension ranges from the cheapest of £21,600 (CHURCHWOOD MANAGEMENT LTD based in W13) to the dearest of £21,944 (RAID Architecture based in TW8), 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 TW8 by posting a job with HaMuch. We'll send it to extension builders in TW8.

Estimates for flat roof extension near TW8

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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What insulation do I need for a flat roof extension?

	Job	Estimate
	Underpinning a house	£17,366
	Build a two storey extension	£87,799
	Build a timber frame extension	£25,866
	Install a swimming pool	£80,866
	Cost to build a single storey extension	£52,318
	Cost to build a side return extension	£39,992
	Install an RSJ	£2,066
	Build an outbuilding	£9,866
	Build a mansard loft conversion	£51,866
	Cost of a loft conversion	£32,493
	Build a kitchen extension	£41,866
	Build a hip to gable loft conversion	£41,866
	Build a granny annexe	£86,866
	Build a garden office	£9,866
	Convert a garage	£15,866
	Build a new garage	£18,366
	Build a flat roof extension	£21,866
	Build a dormer loft conversion	£41,866
	Lay a concrete foundation	£6,116
	Convert a bungalow loft	£28,866
	Basement conversion cost	£35,992

Business name	Flat roof extension cost
BUILDING ANGELS LTD, Brentford, TW8	£21,856
Pearl Valley Construction Services, Brentford, TW8	£21,888
BSE Construction Ltd, London, Greater London, TW8	£21,840
RAID Architecture, Greater London, TW8	£21,944
Kantec, London, Greater London, TW8	£21,840
Buildup London Limited, Ealing, Greater London, TW8	£21,840
HOAM BUILD, Brentford, TW8	£21,944
Buildup London Limited, Greater London, TW8	£21,944
Kacmar Building Service, Brentford, TW8	£21,888
RAF Construction Solutions, Brentford, TW8	£21,856
Foran Construction Ltd, Brentford, TW8	£21,864
Andy Harris Construction, Lichfield Road, Kew, TW9	£21,888
Portal Property Services Ltd, Greater London, W13	£21,944
Pro Construction London Ltd, Greater London, TW9	£21,944
Renovations, Building, Servicing and Maintenance, 3C Blake Mews, Kew, Richmond, Greater London, TW9	£21,840
MALL BUILDERS, Hanwell, W7	£21,848
Hamilton King, Greater London, W4	£21,840
R10 Builders Ltd, Richmond upon Thames, Surrey, tw9	£21,840
S. A. W. Building Contractors Ltd., S A W Building Contractors Ltd, 46-48 St. Marys Road, London, Greater London, W5	£21,840
MoreSpace, Ealing, London, Greater London, W5	£21,840
SW CHELSEA CONSTRUCTION, Greater London, W4	£21,944
Tom Corrigan Building & Decorating, West Ealing, W13	£21,888
All 4 Property, London, Surrey, TW7	£21,840
JOHN HOPWOOD DELTA CONSTRUCTION SERVICES, Chiswick, W4	£21,848
CHURCHWOOD MANAGEMENT LTD, London, W13	£21,600

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Flat roof extension cost in TW8

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Flat roof extension cost in TW8

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