Cost to build a flat roof extension in South Kensington

Flat roof extension cost in South Kensington

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 South Kensington?

A flat roof extension ranges from the cheapest of £21,840 (Ventura Property Developments based in SW7) to the dearest of £21,944 (Clarisford based in SW3), 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 South Kensington by posting a job with HaMuch. We'll send it to extension builders in South Kensington.

Estimates for flat roof extension near South Kensington

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	£17,387
	Build a two storey extension	£87,830
	Build a timber frame extension	£25,887
	Install a swimming pool	£80,887
	Cost to build a single storey extension	£52,734
	Cost to build a side return extension	£40,226
	Install an RSJ	£2,087
	Build an outbuilding	£9,887
	Build a mansard loft conversion	£51,887
	Cost of a loft conversion	£32,688
	Build a kitchen extension	£41,887
	Build a hip to gable loft conversion	£41,887
	Build a granny annexe	£86,887
	Build a garden office	£9,887
	Convert a garage	£15,887
	Build a new garage	£18,387
	Build a flat roof extension	£21,887
	Build a dormer loft conversion	£41,887
	Lay a concrete foundation	£6,137
	Convert a bungalow loft	£28,887
	Basement conversion cost	£36,226

Business name	Flat roof extension cost
Ventura Property Developments, Ground Floor Office, 97 Old Brompton Road, London, SW7	£21,840
Hartley Homes, 97 Old Brompton Road, South Kensington, Greater London, SW7	£21,840
Clarisford, Greater London, SW3	£21,944
Clarisford, London, Greater London, SW3	£21,840
Hearne House, London, Greater London, SW3	£21,840
Crosshatch, London, Greater London, SW3	£21,840
Crosshatch, Greater London, SW3	£21,944
MALLETT, London, Greater London, W8	£21,848
OL AND EDWARD LTD, 142 Cromwell Road, London, SW7	£21,848
Jeffery and Wilkes, International House,, 142 Cromwell Road, Kensington, London, Greater London, SW7	£21,848
Cobalt Interiors, London, Greater London, SW7	£21,944
Knightsbridge Design, Greater London, SW1X	£21,944
Oro Projects, 13 Radnor Walk, London, Greater London, SW3	£21,840
ADOVA, London, Greater London, SW3	£21,840
Sloane Ave Renovations, 130 Sloane Street, London, Greater London, SW1X	£21,840
Autas Developments, London, SW1W	£21,944
Property Refurbishment London, 21 Ellis Street, Sloane Square, London, Greater London, SW1X	£21,840
Leufroy, Greater London, SW5	£21,944
Leufroy, 62 Kenway Road, London, Greater London, SW5	£21,848
Varga Homes Renovation, Greater London, W8	£21,944
ALT CONSTRUCTION, Greater London, SW1W	£21,944
Builders by Design Ltd, Greater London, SW3	£21,936
FrontierstroyUK, Greater London, W8	£21,944
Haus to Home, Greater London, SW3	£21,936
Huntsmore, 96 Kensington High Street, London, Greater London, W8	£21,848

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Flat roof extension cost in South Kensington

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Flat roof extension cost in South Kensington

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