Cost to build a flat roof extension in Soho

Flat roof extension cost in Soho

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 Soho?

A flat roof extension ranges from the cheapest of £21,840 (We Love Build - Three Arches based in W1J) to the dearest of £21,944 (Big Mamma based in W1F), 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 Soho by posting a job with HaMuch. We'll send it to extension builders in Soho.

Estimates for flat roof extension near Soho

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	£17,410
	Build a two storey extension	£87,866
	Build a timber frame extension	£25,910
	Install a swimming pool	£80,910
	Cost to build a single storey extension	£53,208
	Cost to build a side return extension	£40,492
	Install an RSJ	£2,110
	Build an outbuilding	£9,910
	Build a mansard loft conversion	£51,910
	Cost of a loft conversion	£32,910
	Build a kitchen extension	£41,910
	Build a hip to gable loft conversion	£41,910
	Build a granny annexe	£86,910
	Build a garden office	£9,910
	Convert a garage	£15,910
	Build a new garage	£18,410
	Build a flat roof extension	£21,910
	Build a dormer loft conversion	£41,910
	Lay a concrete foundation	£6,160
	Convert a bungalow loft	£28,910
	Basement conversion cost	£36,492

Business name	Flat roof extension cost
Big Mamma, Greater London, W1F	£21,944
Cornerstone, Greater London, W1F	£21,944
Sehem Design, london, W1F	£21,944
Elv8 Interiors, Greater London, W1B	£21,944
Starfish Properties, 14 Hanover Street, 3rd Floor, London, W1S	£21,848
Dominic Payte - Design & Build, 14 Hanover Square, Mayfair, Greater London, W1S	£21,848
We Love Build - Three Arches, London, Greater London, W1J	£21,840
We Love Build, Greater London, W1J	£21,944
Guildon LTD, Greater London, w1b	£21,944
Hestia Contractors Ltd, 207 Regent Street, London, Greater London, W1B	£21,848
CORRECTBUILDIV.LTD, Greater London, W1B	£21,944
Luxe Refurbs, 16 Berkeley Street, London, Greater London, W1J	£21,840
Atlant Construction, London, Greater London, W1T	£21,848
Mayfair Design, Greater London, W1J	£21,944
Teammax LTD, 85 Great Portland Street, London, Greater London, W1W	£21,848
Capatus properties ltd, Greater London, W1W	£21,944
Italian Soft Leather Purses, Greater London, W1W	£21,944
Design 2000 UK Ltd, Greater London, W1W	£21,944
JK Doors, Fitzrovia, W1W	£21,888
JAY Executinos LTD, London, W1W	£21,944
Eternal Solutions, Greater London, W1W	£21,944
KBB Master Builder Ltd, Greater London, W1W	£21,944
Grand Phase Ltd, 85 Great Portland Street, London, Greater London, W1W	£21,848
KBB Master Builder LTD, Greater London, W1W	£21,944
UCS UK Ltd, Greater London, W1W	£21,944

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Flat roof extension cost in Soho

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Flat roof extension cost in Soho

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