Cost to build a flat roof extension in SW4

Flat roof extension cost in SW4

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 SW4?

A flat roof extension ranges from the cheapest of £21,840 (Zebra Property Group based in SW11) to the dearest of £21,944 (Hawksmoor Construction based in SW4), 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 SW4 by posting a job with HaMuch. We'll send it to extension builders in SW4.

Estimates for flat roof extension near SW4

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	£17,385
	Build a two storey extension	£87,828
	Build a timber frame extension	£25,885
	Install a swimming pool	£80,885
	Cost to build a single storey extension	£52,702
	Cost to build a side return extension	£40,208
	Install an RSJ	£2,085
	Build an outbuilding	£9,885
	Build a mansard loft conversion	£51,885
	Cost of a loft conversion	£32,673
	Build a kitchen extension	£41,885
	Build a hip to gable loft conversion	£41,885
	Build a granny annexe	£86,885
	Build a garden office	£9,885
	Convert a garage	£15,885
	Build a new garage	£18,385
	Build a flat roof extension	£21,885
	Build a dormer loft conversion	£41,885
	Lay a concrete foundation	£6,135
	Convert a bungalow loft	£28,885
	Basement conversion cost	£36,208

Business name	Flat roof extension cost
Grosvenor House Construction Ltd., 112A Clapham Park Road, London, London, Greater London, sw4	£21,848
ASAP Renovation, 101 Clapham High St., Clapham, Greater London, SW4	£21,848
Paddy Brown, 67 Wingate Square, Clapham, London, Greater London, SW4	£21,848
Hawksmoor Construction, Clapham Common, SW4	£21,944
South London Conversions Ltd, London, SW4	£21,888
Grandiem Vero, Greater London, SW4	£21,944
Gustav Building Services, Greater London, SW4	£21,944
Gustav Building Services, London, Greater London, SW4	£21,848
BUILD TEAM, Clapham, SW4	£21,864
Sturdy Evolution Developments Ltd, London, Greater London, SW4	£21,848
Basenet Ltd, London, SW4	£21,944
Inside Out Property Refurbishment Ltd, London, SW4	£21,936
Matthew Stroud Associates Ltd, Greater London, SW4	£21,936
Build Team, 342 Clapham Rd, London, Greater London, SW9	£21,848
D & G Building & Decorating, Nine Elms, SW8	£21,856
Zebra Property Group, 38 Lavender Hill, London, Greater London, SW11	£21,840
M. Watkins and Sons Ltd, Greater London, SW12	£21,944
Loran Design and Build Ltd, London, SW11	£21,936
R&M Lines Limited, R & M Lines Ltd, Unit 149, Battersea Business Centre, London, Greater London, SW11	£21,840
General Refurbishment BV Ltd, Stockwell, SW9	£21,888
R C BUILDER, Balham, SW12	£21,864
Werner and Werner Limited, 256 Wandsworth Road, London, Greater London, SW8	£21,848
CleanDay London Ltd, 242 Hydethorpe Road, Balham, London, Gre, SW12	£21,840
Emerald Aspects, Greater London, SW8	£21,944
Battersea Builders, Battersea Arts Centre, Scratch Hub, London, Greater London, SW11	£21,840

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Flat roof extension cost in SW4

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Flat roof extension cost in SW4

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