Cost to build a flat roof extension in Canary Wharf

Flat roof extension cost in Canary Wharf

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 Canary Wharf?

A flat roof extension ranges from the cheapest of £21,840 (Nextbuild based in E16) to the dearest of £21,944 (PHE BUILDING SERVICES based in E14), 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 Canary Wharf by posting a job with HaMuch. We'll send it to extension builders in Canary Wharf.

Estimates for flat roof extension near Canary Wharf

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	£17,400
	Build a two storey extension	£87,850
	Build a timber frame extension	£25,900
	Install a swimming pool	£80,900
	Cost to build a single storey extension	£53,003
	Cost to build a side return extension	£40,377
	Install an RSJ	£2,100
	Build an outbuilding	£9,900
	Build a mansard loft conversion	£51,900
	Cost of a loft conversion	£32,814
	Build a kitchen extension	£41,900
	Build a hip to gable loft conversion	£41,900
	Build a granny annexe	£86,900
	Build a garden office	£9,900
	Convert a garage	£15,900
	Build a new garage	£18,400
	Build a flat roof extension	£21,900
	Build a dormer loft conversion	£41,900
	Lay a concrete foundation	£6,150
	Convert a bungalow loft	£28,900
	Basement conversion cost	£36,377

Business name	Flat roof extension cost
PHE BUILDING SERVICES, Greater London, E14	£21,944
ALFA Building Solutions Ltd, Greater London, E14	£21,944
ALFA Building Solutions Ltd, London, Greater London, E14	£21,848
Andy Tunmer Building Services, Canary Wharf, E14	£21,888
Team Constructions, Greater London, E14	£21,944
Your Builder Hero, London, E14	£21,944
ROOSE CONSTRUCTION LTD, Rotherhithe, SE16	£21,864
MARMAREX, London, Greater London, SE16	£21,848
MARMAREX, London, SE16	£21,944
CG Design and Build LTD., London Arena, Greater London, e14	£21,848
CG Design and Build LTD., Greater London, e14	£21,944
Darren & Valentin Construction & Maintenance, Bow, E3	£21,856
Island design & Construction Ltd, Greater London, E14	£21,944
Glenward Builders Ltd, Bow, E3	£21,936
Builders, Shoreditch, E1	£21,888
Renobuild Group, London, E1	£21,888
DARKyellow, London, Greater London, E1	£21,856
Jamie Brown Construction, Greater London, E1	£21,944
Jamie Brown Construction, Jamie Brown Construction, London, Greater London, E1	£21,856
PMG Design & Build Ltd, Greater London, E1	£21,944
SCL Design & Build Ltd, Londonderry, SE16	£21,944
Trafalgar Building Company Limited, Greenwich, SE10	£21,864
Reconstruction, London, E3	£21,848
Nextbuild, Docklands, Greater London, E16	£21,840
Nextbuild, Greater London, E16	£21,936

Extend your Canary Wharf with an extension

Flat roof extension cost in Canary Wharf

Estimates for common extension builder jobs in Canary Wharf;

Rates for other Canary Wharf trades

Flat roof extension cost in Canary Wharf

Get extension builder rates instantly