Cost to build a flat roof extension in N2

Flat roof extension cost in N2

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 N2?

A flat roof extension ranges from the cheapest of £21,360 (Simalex London based in N10) to the dearest of £21,944 (In the city decorators & design based in N2), 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 N2 by posting a job with HaMuch. We'll send it to extension builders in N2.

Estimates for flat roof extension near N2

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	£17,362
	Build a two storey extension	£87,793
	Build a timber frame extension	£25,862
	Install a swimming pool	£80,862
	Cost to build a single storey extension	£52,242
	Cost to build a side return extension	£39,948
	Install an RSJ	£2,062
	Build an outbuilding	£9,862
	Build a mansard loft conversion	£51,862
	Cost of a loft conversion	£32,457
	Build a kitchen extension	£41,862
	Build a hip to gable loft conversion	£41,862
	Build a granny annexe	£86,862
	Build a garden office	£9,862
	Convert a garage	£15,862
	Build a new garage	£18,362
	Build a flat roof extension	£21,862
	Build a dormer loft conversion	£41,862
	Lay a concrete foundation	£6,112
	Convert a bungalow loft	£28,862
	Basement conversion cost	£35,948

Business name	Flat roof extension cost
in the city decorators & design, London Bridge, N2	£21,944
Aqua Tierra Sol, Greater London, N2	£21,944
Coraff Flooring, 51 The Market Place, Falloden Way, Londo, NW11	£21,848
Builders Are Us, London, N2	£21,944
AK Builders, Finchley, N3	£21,840
Ally Electrical Services Ltd, Lonsto House, Princes Lane, London, Grea, N10	£21,944
Arundell Associates, London, N10	£21,600
SJ Expert Building Services, Muswell Hill, N10	£21,888
HAADAM Ltd., Greater London, N10	£21,848
N10 Tradespeople, Greater London, N10	£21,944
PLAN C - Design. Build. Create, Greater London, N10	£21,944
PLAN C - Design. Build. Create, 500 Muswell Hill Broadway, London, Greater London, N10	£21,848
N10 Building Contractors Ltd, Muswell Hill, N10	£21,840
Ninos Carpentry Ltd, Greater London, N3	£21,944
CM Build, Greater London, N10	£21,944
D Tymczyszyn T/A Tym Building, North Finchley, N12	£21,856
Urban Design Build, 84 George Crescent, London, Greater London, N10	£21,848
Gardens Dwarfs Home & Garden Service, Greater London, N10	£21,944
Buildwiseonecompanyfoursolutions Ltd., London, Londonderry, N3	£21,848
L&V BUILDING CONSTRUCTION LTD, Finchley, N3	£21,864
DPS Building Ltd, 100 unit, 116 Ballards Lane, Finchley, N3	£21,848
PearTree Homes, Greater London, NW11	£21,944
Simalex London, London, N10	£21,360
www.craftedpeople.com, Finchley, N3	£21,888
Madewellbuilders Ltd, Finchley, N3	£21,888

Extend your N2 with an extension

Flat roof extension cost in N2

Estimates for common extension builder jobs in N2;

Rates for other N2 trades

Flat roof extension cost in N2

Get extension builder rates instantly