Cost to build a flat roof extension in TW2

Extend your TW2 with an extension

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 TW2?

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Flat roof extension cost in TW2
Build a flat roof extension cost in TW2
Estimates for common extension builder jobs in TW2;

Flat roof extension cost in TW2

A flat roof extension ranges from the cheapest of £21,840 (Tota Builders based in TW2) to the dearest of £21,952 (SmallBerg based in TW2), 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 TW2 by posting a job with HaMuch. We'll send it to extension builders in TW2.

Estimates for build a flat roof extension near TW2

Estimates for common extension builder jobs in TW2;

Rates for other TW2 trades

Build a flat roof extension cost in TW2

Estimate Build a flat roof extension cost in TW2 based on hourly/daily rate (excluding VAT or callout charges)
Business name	Build a flat roof extension cost
Tota Builders, Twickenham, TW2	£21,840
SmallBerg, Greater London, TW2	£21,952
A Twickenham Roofing Service, Twickenham, TW2	£21,864
Planning Design Building, Greater London, TW2	£21,952
Maltwood, Korus House, 6-8 Colne Road, Twickenham, Greater London, TW1	£21,840
CALLAGHAN CONSTRUCTION, Strawberry Hill, TW2	£21,856
Everest Design Ltd, Hampton Road, Twickenham, Greater London, TW2	£21,848
RG BUILDING SERVICES, Strawberry Hill, TW2	£21,872
Twickenham Home Ltd, Greater London, TW2	£21,944
Darwin Home Improvements, Greater London, TW2	£21,944
Active Builders London ltd, Twickenham, Greater London, tw2	£21,856
Skora Contractors Ltd, 299A Whitton Dene, Isleworth, Greater London, TW7	£21,848
Habitus Home Improvements, Greater London, TW1	£21,944
BC 10 Builder Services, Greater London, TW1	£21,944
Dashwood Interiors, Greater London, TW1	£21,944
Slick Construction Ltd, Isleworth, TW7	£21,888
Slick Construction, Greater London, tw7	£21,944
Slick Construction, 23 thatchers way, isleworth, Greater London, tw7	£21,848
Masterbuild & Design Ltd, Twickenham, TW1	£21,864
Hawaii Ltd, Hounslow, TW3	£21,888
Patrick + Rosie, London, Greater London, TW1	£21,840
S & M, Faltham, TW13	£21,896
Burbeck Project Management, London, TW1	£21,944
WeAreKooshty, Surrey, TW1	£21,944
IMKO, Jardine House, 1C Claremont Road, Teddington, London, Greater London, TW11	£21,840

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	Job	Estimate
	Cost to underpin a house	£17,394
	Build a two storey extension	£87,841
	Cost to build a timber frame extension	£25,894
	Cost to build a swimming pool	£80,894
	Cost to build a single storey extension	£52,875
	Cost to build a side return extension	£40,305
	Cost to Install an RSJ	£2,094
	Build an outbuilding	£9,894
	Cost to build a mansard loft conversion	£51,894
	Cost of a loft conversion	£32,754
	Cost to build a kitchen extension	£41,894
	Build a hip to gable loft conversion	£41,894
	Build a granny annexe	£86,894
	Build a garden office	£9,894
	Cost of a garage conversion	£15,894
	Build a new garage	£18,394
	Cost to build a flat roof extension	£21,894
	Cost to build a dormer loft conversion	£41,894
	Lay a concrete foundation	£6,144
	Cost of a bungalow loft conversion	£28,894
	Basement conversion cost	£36,305