Cost to build a flat roof extension in NW8

Flat roof extension cost in NW8

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 NW8?

A flat roof extension ranges from the cheapest of £21,840 (R&Co Property Development Ltd based in NW8) to the dearest of £22,400 (ELJHANI BUILDING & PROPERTY MANAGEMENT SERVICES LTD based in NE4), 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 NW8 by posting a job with HaMuch. We'll send it to extension builders in NW8.

Estimates for flat roof extension near NW8

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?
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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	£17,416
	Build a two storey extension	£87,874
	Build a timber frame extension	£25,916
	Install a swimming pool	£80,916
	Cost to build a single storey extension	£53,323
	Cost to build a side return extension	£40,557
	Install an RSJ	£2,116
	Build an outbuilding	£9,916
	Build a mansard loft conversion	£51,916
	Cost of a loft conversion	£32,964
	Build a kitchen extension	£41,916
	Build a hip to gable loft conversion	£41,916
	Build a granny annexe	£86,916
	Build a garden office	£9,916
	Convert a garage	£15,916
	Build a new garage	£18,416
	Build a flat roof extension	£21,916
	Build a dormer loft conversion	£41,916
	Lay a concrete foundation	£6,166
	Convert a bungalow loft	£28,916
	Basement conversion cost	£36,557

Business name	Flat roof extension cost
R&Co Property Development Ltd, London, NW8	£21,840
Cly Design, Greater London, NW8	£21,944
London Craftmasters LTD, 57, 29 Abercorn Place, Westminster, Greater London, NW8	£21,848
Niko Jikuri, London, NW1	£21,944
ProHome Construction ltd, Maida Vale, West London, London, Greater London, W9	£21,848
ADAM Carpentry, Greater London, W2	£21,944
EUROBUILD PROPERTIES CO LTD, Kilburn, NW6	£21,856
Bonsai Property Services, Flat, 78 York Street, London, Greater London, W1H	£21,848
Mark Collett Design and Build, 8 St Georges Terrace, Primrose Hill, London, Greater London, NW1	£21,848
ELJHANI BUILDING & PROPERTY MANAGEMENT SERVICES LTD, Newcastle upon Tyne , NE4	£22,400
Hampstead Design Hub, Londonderry, NW6	£21,944
Marylebone Interiors London Ltd, Greater London, W1H	£21,944
Kigumi ltd, London, Nw3	£21,944
CB Design & Architecture, 24 d cambridge avenue, london, Greater London, nw6	£21,848
Northwest Building Constructions Ltd, Paddington, W2	£21,888
Oscar Builder, Kilburn, NW6	£21,864
Hisham Al Sawan, Kilburn, NW6	£21,888
Buildview Construction Ltd, Greater London, NW3	£21,944
ASE Design & Build Ltd, Kilburn, NW6	£21,888
Duke of Design, 3 Southwick Street, London, Greater London, W2	£21,848
Duke of Design, Greater London, W2	£21,944
Reniam Limited, Greater London, W2	£21,944
Blue, Greater London, NW6	£21,944
Typhoon Services Ltd, Kilburn, NW6	£21,888
BUILD SPACE, Primrose Hill, NW3	£21,864

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Flat roof extension cost in NW8

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Flat roof extension cost in NW8

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