Cost to build a flat roof extension in SW99

Flat roof extension cost in SW99

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 SW99?

A flat roof extension ranges from the cheapest of £21,840 (Cliden Construction (London) based in SW1V) to the dearest of £21,944 (Emerald Aspects based in SW8), 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 SW99 by posting a job with HaMuch. We'll send it to extension builders in SW99.

Estimates for flat roof extension near SW99

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	£17,381
	Build a two storey extension	£87,821
	Build a timber frame extension	£25,881
	Install a swimming pool	£80,881
	Cost to build a single storey extension	£52,613
	Cost to build a side return extension	£40,157
	Install an RSJ	£2,081
	Build an outbuilding	£9,881
	Build a mansard loft conversion	£51,881
	Cost of a loft conversion	£32,631
	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	£36,157

Business name	Flat roof extension cost
Exquisite Build, London, Greater London, sw8	£21,848
Build Team, 342 Clapham Rd, London, Greater London, SW9	£21,848
General Refurbishment BV Ltd, Stockwell, SW9	£21,888
Murdoch Building Services, Stockwell, SW9	£21,888
D & G Building & Decorating, Nine Elms, SW8	£21,856
Emerald Aspects, Greater London, SW8	£21,944
Finch Lockerbie, Kennington Park Business Centre, 1-3 Brixton Road, London, Greater London, SW9	£21,848
Werner and Werner Limited, 256 Wandsworth Road, London, Greater London, SW8	£21,848
Gustav Building Services, London, Greater London, SW4	£21,848
Gustav Building Services, Greater London, SW4	£21,944
Sturdy Evolution Developments Ltd, London, Greater London, SW4	£21,848
BUILD TEAM, Clapham, SW4	£21,864
Cornerstones Construction, Stockwell, SW9	£21,888
Building and Plastering Solution, London, SE5	£21,944
Matthew Stroud Associates Ltd, Greater London, SW4	£21,936
ASAP Renovation, 101 Clapham High St., Clapham, Greater London, SW4	£21,848
Inside Out Property Refurbishment Ltd, London, SW4	£21,936
Paddy Brown, 67 Wingate Square, Clapham, London, Greater London, SW4	£21,848
Grandiem Vero, Greater London, SW4	£21,944
South London Conversions Ltd, London, SW4	£21,888
Hawksmoor Construction, Clapham Common, SW4	£21,944
Grosvenor House Construction Ltd., 112A Clapham Park Road, London, London, Greater London, sw4	£21,848
Cliden Construction (London), London, Greater London, SW1V	£21,840
DEMA REFURBISHED LTD, BATERSEA PARK YOUNGS COURT, london, sw11	£21,840
Zebra Property Group, 38 Lavender Hill, London, Greater London, SW11	£21,840

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Flat roof extension cost in SW99

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Flat roof extension cost in SW99

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