Cost to build a flat roof extension in E4

Extend your E4 with an extension

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 E4?

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Flat roof extension cost in E4

A flat roof extension ranges from the cheapest of £21,816 (JPL Building and Landscaping based in IG9) to the dearest of £21,936 (Better Homes Studio based in E4), 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 E4 by posting a job with HaMuch. We'll send it to extension builders in E4.

Estimates for build a flat roof extension near E4

	Job	Estimate
	Cost to underpin a house	£17,380
	Build a two storey extension	£87,820
	Cost to build a timber frame extension	£25,880
	Cost to build a swimming pool	£80,880
	Cost to build a single storey extension	£52,594
	Cost to build a side return extension	£40,146
	Cost to Install an RSJ	£2,080
	Build an outbuilding	£9,880
	Cost to build a mansard loft conversion	£51,880
	Cost of a loft conversion	£32,622
	Cost to build a kitchen extension	£41,880
	Build a hip to gable loft conversion	£41,880
	Build a granny annexe	£86,880
	Build a garden office	£9,880
	Cost of a garage conversion	£15,880
	Build a new garage	£18,380
	Cost to build a flat roof extension	£21,880
	Cost to build a dormer loft conversion	£41,880
	Lay a concrete foundation	£6,130
	Cost of a bungalow loft conversion	£28,880
	Basement conversion cost	£36,146

Business name	Build a flat roof extension cost
Better Homes Studio, London, E4	£21,936
Celli Design & Build, Chingford, London, E4	£21,840
EMZO CONSTRUCTION LTD, Chingford, E4	£21,856
Kagimu Builders Ltd, Chingford, E4	£21,880
UK BUILDING WORKS LTD, Chingford, E4	£21,848
Loft and Teams Ltd, London, E4	£21,880
SHJ Construction Services Limited, Greater London, E4	£21,936
M Salsbury Building Services, Chingford, E4	£21,848
MJ Building & Electrical Services, London, E4	£21,936
NICHOLAS STEPHENS CONSTRUCTION, Chingford, E4	£21,848
K J B Loft Conversions & Extensions, London, E4	£21,880
Supreme Lofts Ltd, London, E4	£21,824
Paul Francis, Woodford Green, IG8	£21,880
JPM Independent Surveyors, Greater London, E4	£21,936
Build, Essex, IG8	£21,936
Class1 Maintenance, Walthamstow, E17	£21,880
YIP CONSTRUCTION LTD, Loughton, IG9	£21,848
PEUTIRE BUILDERS, Walthamstow, E17	£21,848
B&M BUILDING SERVICES LIMITED, Greater London, E17	£21,936
KJ Darby Building Contracts Ltd, Woodford Green, IG8	£21,880
M & D BUILDING & DECORATING, Walthamstow, E17	£21,856
Tip Top Lofts, Buckhurst hill, IG9	£21,880
Precision Developments London Ltd, Essex, E4	£21,936
CHRIS BUILDER, Walthamstow, E17	£21,848
JPL Building and Landscaping, Buckhurst Hill, IG9	£21,816

Extend your E4 with an extension

Flat roof extension cost in E4

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Build a flat roof extension cost in E4

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