Cost to build a flat roof extension in SE11

Flat roof extension cost in SE11

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 SE11?

A flat roof extension ranges from the cheapest of £21,840 (Cliden Construction (London) based in SW1V) to the dearest of £21,944 (Building and Plastering Solution based in SE5), 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 SE11 by posting a job with HaMuch. We'll send it to extension builders in SE11.

Estimates for flat roof extension near SE11

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	£17,384
	Build a two storey extension	£87,825
	Build a timber frame extension	£25,884
	Install a swimming pool	£80,884
	Cost to build a single storey extension	£52,670
	Cost to build a side return extension	£40,190
	Install an RSJ	£2,084
	Build an outbuilding	£9,884
	Build a mansard loft conversion	£51,884
	Cost of a loft conversion	£32,658
	Build a kitchen extension	£41,884
	Build a hip to gable loft conversion	£41,884
	Build a granny annexe	£86,884
	Build a garden office	£9,884
	Convert a garage	£15,884
	Build a new garage	£18,384
	Build a flat roof extension	£21,884
	Build a dormer loft conversion	£41,884
	Lay a concrete foundation	£6,134
	Convert a bungalow loft	£28,884
	Basement conversion cost	£36,190

Business name	Flat roof extension cost
Cornerstones Construction, Stockwell, SW9	£21,888
Propia Limited, The Clarence Centre, 6 St George's Circus, London, Greater London, SE1	£21,848
Finch Lockerbie, Kennington Park Business Centre, 1-3 Brixton Road, London, Greater London, SW9	£21,848
AAA Design Decorators, Elephant & Castle, SE17	£21,880
Murdoch Building Services, Stockwell, SW9	£21,888
F & F Building Services, Houses of Parliament, SW1P	£21,880
A to Z Builders Ltd, Houses of Parliament, SW1P	£21,880
GILL BUILDING CONTRACTORS, Bermondsey, SE1	£21,864
Exquisite Build, London, Greater London, sw8	£21,848
AGRI CONSTRUCTION, Bermondsey, SE1	£21,856
DUWIX BUILDING MAINTENANCE, Camberwell, SE5	£21,864
Building and Plastering Solution, London, SE5	£21,944
Infinite CM, Greater London, SE1	£21,936
Space Design Construction Services Ltd, London, Greater London, SE1	£21,848
SE1 Property Care Ltd., Greater London, SE1	£21,944
Stanrock Building Services Ltd, Unit 3b Plantain Place, London, Greater London, se1	£21,848
Stanrock Building Services Ltd, Greater London, se1	£21,944
Cliden Construction (London), London, Greater London, SW1V	£21,840
Emerald Aspects, Greater London, SW8	£21,944
Kia Designs, Greater London, SE1	£21,944
London Projects Ltd, 11 Carteret Street, London, Greater London, SW1H	£21,848
D & S CONSTRUCTION LTD, Bermondsey, SE1	£21,864
Oxus Construction, Kent, SE15	£21,944
Oxus Ltd, London, SE15	£21,848
Werner and Werner Limited, 256 Wandsworth Road, London, Greater London, SW8	£21,848

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Flat roof extension cost in SE11

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Flat roof extension cost in SE11

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