Cost to build a flat roof extension in Hornsey

Flat roof extension cost in Hornsey

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 Hornsey?

A flat roof extension ranges from the cheapest of £21,600 (Arundell Associates based in N10) to the dearest of £22,800 (Romex Building Service based in N22), 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 Hornsey by posting a job with HaMuch. We'll send it to extension builders in Hornsey.

Estimates for flat roof extension near Hornsey

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
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	Job	Estimate
	Underpinning a house	£17,427
	Build a two storey extension	£87,891
	Build a timber frame extension	£25,927
	Install a swimming pool	£80,927
	Cost to build a single storey extension	£53,541
	Cost to build a side return extension	£40,679
	Install an RSJ	£2,127
	Build an outbuilding	£9,927
	Build a mansard loft conversion	£51,927
	Cost of a loft conversion	£33,066
	Build a kitchen extension	£41,927
	Build a hip to gable loft conversion	£41,927
	Build a granny annexe	£86,927
	Build a garden office	£9,927
	Convert a garage	£15,927
	Build a new garage	£18,427
	Build a flat roof extension	£21,927
	Build a dormer loft conversion	£41,927
	Lay a concrete foundation	£6,177
	Convert a bungalow loft	£28,927
	Basement conversion cost	£36,679

Business name	Flat roof extension cost
BROARDWAY BUILDING SERVICES, Hornsey, N8	£21,864
Portico design and build ltd, 9 barrington road, London, Greater London, N8	£21,848
Portico design and build ltd, Greater London, N8	£21,944
Emperor.deco, London , N8	£21,888
SSS Brothers Limited, Wood Green, London, Londonderry, N15	£21,848
BM Lofts Limited, London, N4	£21,888
M Collins Builders Ltd, London, N4	£21,944
OAKWOOD CONSTRUCTION UK LTD, Wood Green, N22	£21,864
London Metropolitan Construction Ltd, Greater London, N22	£21,944
Gardens Dwarfs Home & Garden Service, Greater London, N10	£21,944
CM Build, Greater London, N10	£21,944
WeTradeWorks, Greater London, N19	£21,944
Raocon Limited, Greater London, N19	£21,944
N10 Tradespeople, Greater London, N10	£21,944
A K Decoration & Building Serv, Wood Green, N22	£21,864
SJ Expert Building Services, Muswell Hill, N10	£21,888
Arundell Associates, London, N10	£21,600
N10 Building Contractors Ltd, Muswell Hill, N10	£21,840
Supreme Home Improvements London, London, n19	£21,864
Fine Loft Construction, London, N22	£21,888
Brothers Group, London, N4	£21,944
Romex Building Service, London, N22	£22,800
PLAN C - Design. Build. Create, 500 Muswell Hill Broadway, London, Greater London, N10	£21,848
PLAN C - Design. Build. Create, Greater London, N10	£21,944
Ally Electrical Services Ltd, Lonsto House, Princes Lane, London, Grea, N10	£21,944

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Flat roof extension cost in Hornsey

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Flat roof extension cost in Hornsey

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