Cost to build a flat roof extension in New Cross

Flat roof extension cost in New Cross

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 New Cross?

A flat roof extension ranges from the cheapest of £21,600 (Total Home Refurbishments Ltd based in SE13) to the dearest of £21,944 (DWL Construction Ltd based in SE14), 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 New Cross by posting a job with HaMuch. We'll send it to extension builders in New Cross.

Estimates for flat roof extension near New Cross

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	£17,393
	Build a two storey extension	£87,840
	Build a timber frame extension	£25,893
	Install a swimming pool	£80,893
	Cost to build a single storey extension	£52,869
	Cost to build a side return extension	£40,301
	Install an RSJ	£2,093
	Build an outbuilding	£9,893
	Build a mansard loft conversion	£51,893
	Cost of a loft conversion	£32,751
	Build a kitchen extension	£41,893
	Build a hip to gable loft conversion	£41,893
	Build a granny annexe	£86,893
	Build a garden office	£9,893
	Convert a garage	£15,893
	Build a new garage	£18,393
	Build a flat roof extension	£21,893
	Build a dormer loft conversion	£41,893
	Lay a concrete foundation	£6,143
	Convert a bungalow loft	£28,893
	Basement conversion cost	£36,301

Business name	Flat roof extension cost
DWL Construction Ltd, London, SE14	£21,944
Dumrea Building Construction Ltd, London, SE14	£21,888
WiseContract, Studio 33, Unit 10, elizabeth Industrial Estate, Juno Way, London, Greater London, se14	£21,848
Baseline Build & Renovate, London, Greater London, SE15	£21,848
blitbolt ltd, london, Greater London, SE4	£21,848
blitbolt ltd, Greater London, SE4	£21,944
1M Construction Ltd, Peckham, SE15	£21,864
HUT Projects, Greater London, se15	£21,944
Ballara Ltd, Argyle Way, London, Greater London, SE16	£21,856
Ballara Ltd, Greater London, SE16	£21,944
Global Business BoxLttd, Greater London, SE15	£21,944
AZC BUILDING SERVICES, Greenwich, SE10	£21,864
CG Design and Build LTD., Greater London, e14	£21,944
CG Design and Build LTD., London Arena, Greater London, e14	£21,848
Island design & Construction Ltd, Greater London, E14	£21,944
South East Builders, London, SE4	£21,864
Casa Of Peckham London, London, SE15	£21,944
Demiri Builder Ltd, London, SE13	£21,944
Justin Bailey, Greater London, SE4	£21,944
Total Home Refurbishments Ltd, London, SE13	£21,600
SCL Design & Build Ltd, Londonderry, SE16	£21,944
MARMAREX, London, SE16	£21,944
MARMAREX, London, Greater London, SE16	£21,848
Ask Building, Bermondsey, SE1	£21,888
Oxus Construction, Kent, SE15	£21,944

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Flat roof extension cost in New Cross

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Flat roof extension cost in New Cross

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