Cost to build a flat roof extension in TW12

Flat roof extension cost in TW12

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 TW12?

A flat roof extension ranges from the cheapest of £21,200 (Scott's Gardens based in TW13) to the dearest of £22,800 (TD PRECISION BUILD LTD based in KT8), 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 TW12 by posting a job with HaMuch. We'll send it to extension builders in TW12.

Estimates for flat roof extension near TW12

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	£17,407
	Build a two storey extension	£87,860
	Build a timber frame extension	£25,907
	Install a swimming pool	£80,907
	Cost to build a single storey extension	£53,138
	Cost to build a side return extension	£40,452
	Install an RSJ	£2,107
	Build an outbuilding	£9,907
	Build a mansard loft conversion	£51,907
	Cost of a loft conversion	£32,877
	Build a kitchen extension	£41,907
	Build a hip to gable loft conversion	£41,907
	Build a granny annexe	£86,907
	Build a garden office	£9,907
	Convert a garage	£15,907
	Build a new garage	£18,407
	Build a flat roof extension	£21,907
	Build a dormer loft conversion	£41,907
	Lay a concrete foundation	£6,157
	Convert a bungalow loft	£28,907
	Basement conversion cost	£36,452

Business name	Flat roof extension cost
Blue Ribbon Construction, 6 Sherborne Court, 40 Percy Road, Hampto, TW12	£21,848
REED CONSTRUCTION LTD, Hampton, TW12	£21,872
P Genders Building Services, Hampton, TW12	£21,872
HH Concept, Greater London, Greater London, TW12	£21,856
D GAFFNEY D G BUILDERS & CO, Hampton, TW12	£21,872
Home Build Building Revolution, Flat 1, A3 Kingsway business park, Hampton, TW12	£21,856
IN&OUT PROJECTS LTD, Hampton, Greater London, tw12	£21,856
Scott's Gardens, Feltham, TW13	£21,200
ENGLEFIELD CONSTRUCTION LTD, West Molesey, KT8	£21,872
MAGNAT KITCHENS LTD, West Molesey, KT8	£21,888
Cube Lofts, Teddington, Surrey, TW11	£21,848
S & M, Faltham, TW13	£21,896
TD PRECISION BUILD LTD, West Molesey, KT8	£22,800
J PATERSON (BUILDERS) LTD, Sunbury-on-Thames, TW16	£21,872
Stavarache Building, Feltham, Tw13	£22,400
Masterbuild & Design Ltd, Twickenham, TW1	£21,864
Everest Design Ltd, Hampton Road, Twickenham, Greater London, TW2	£21,848
IMKO, Jardine House, 1C Claremont Road, Teddington, London, Greater London, TW11	£21,840
FLK Builders, French street, Sunbury-on-Thames, Greater London, TW16	£21,856
JTB Developments, London, Greater London, TW13	£21,856
JTB Developments, Greater London, TW13	£21,952
SmallBerg, Greater London, TW2	£21,952
A Wahed Builder, Faltham, TW13	£21,880
TipTop Builders, Hounslow Road, Hanworth, Londonderry, TW13	£21,856
A Clean Sweep Ltd, 69 Uxbridge Road, Hanworth, Feltham, Mid, TW13	£21,960

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Flat roof extension cost in TW12

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Flat roof extension cost in TW12

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