Cost to build a flat roof extension in HA6

Flat roof extension cost in HA6

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 HA6?

A flat roof extension ranges from the cheapest of £20,040 (Adams Build and Design LTD. based in Ha6) to the dearest of £24,000 (Design & Build Builders Ltd based in WD18), 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 HA6 by posting a job with HaMuch. We'll send it to extension builders in HA6.

Estimates for flat roof extension near HA6

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?
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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	£17,422
	Build a two storey extension	£87,883
	Build a timber frame extension	£25,922
	Install a swimming pool	£80,922
	Cost to build a single storey extension	£53,438
	Cost to build a side return extension	£40,622
	Install an RSJ	£2,122
	Build an outbuilding	£9,922
	Build a mansard loft conversion	£51,922
	Cost of a loft conversion	£33,018
	Build a kitchen extension	£41,922
	Build a hip to gable loft conversion	£41,922
	Build a granny annexe	£86,922
	Build a garden office	£9,922
	Convert a garage	£15,922
	Build a new garage	£18,422
	Build a flat roof extension	£21,922
	Build a dormer loft conversion	£41,922
	Lay a concrete foundation	£6,172
	Convert a bungalow loft	£28,922
	Basement conversion cost	£36,622

Business name	Flat roof extension cost
Daniel London, London, Greater London, HA6	£21,872
Adams Build and Design LTD., Greater London, Ha6	£20,040
Coste + Beno Ltd, Greater London, HA6	£21,968
Coste + Beno Ltd, 20 Leaf Close,, Northwood,, London, Greater London, HA6	£21,864
Project Squared Construction Ltd, Hertfordshire, ha6	£21,968
S2M VENTURES LLP, West Lothian, HA6	£21,968
J B S Development & Construction Ltd, Pinner, HA5	£21,888
Excelsior Construction Ltd, Pinner, HA5	£21,888
AV Home Improvements, Herts, WD19	£21,968
RMB Building and Development Ltd, 1 Egerton Close, Pinner, Middlesex, HA5	£21,856
Sharp Building Ltd, Watford, WD19	£21,896
Ideal Place Construction Ltd, Watford, WD19	£22,000
C S C BUILDINGS LTD, Oxhey, WD19	£21,888
GRAPHENE, London, Greater London, HA5	£21,856
Cannon Build Solutions, Hartsbourne House, Watford, Hertfordshire, WD19	£21,872
G.L. Campbell Builders LTD, 18 Colchester Drive, Pinner, Middlesex, HA5	£21,856
Building Service and Support Ltd, Pinner, HA5	£21,880
Design & Build Builders Ltd, Watford, WD18	£24,000
Frame Brickwork, West Watford, WD18	£21,896
Oldfield Construction, London, Greater London, Ha4	£21,856
Architectural Brickwork Services, Hertfordshire, WD19	£21,968
Harrow Roofing and Building Limited, Middlesex, HA5	£21,952
none, Lancashire, HA5	£21,944
The Property Planner, Greater London, HA4	£21,952
DeHavilland Design & Build Limited, Greater London, HA4	£21,952

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Flat roof extension cost in HA6

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Flat roof extension cost in HA6

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