Cost to build a flat roof extension in Forest Hill

Flat roof extension cost in Forest Hill

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 Forest Hill?

A flat roof extension ranges from the cheapest of £21,840 (Albion Roofing Solutions based in SE23) to the dearest of £21,944 (By design - interior styling and remodelling based in Se26), 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 Forest Hill by posting a job with HaMuch. We'll send it to extension builders in Forest Hill.

Estimates for flat roof extension near Forest Hill

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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Can you walk on a flat roof extension?
What insulation do I need for a flat roof extension?

	Job	Estimate
	Underpinning a house	£17,392
	Build a two storey extension	£87,837
	Build a timber frame extension	£25,892
	Install a swimming pool	£80,892
	Cost to build a single storey extension	£52,830
	Cost to build a side return extension	£40,280
	Install an RSJ	£2,092
	Build an outbuilding	£9,892
	Build a mansard loft conversion	£51,892
	Cost of a loft conversion	£32,733
	Build a kitchen extension	£41,892
	Build a hip to gable loft conversion	£41,892
	Build a granny annexe	£86,892
	Build a garden office	£9,892
	Convert a garage	£15,892
	Build a new garage	£18,392
	Build a flat roof extension	£21,892
	Build a dormer loft conversion	£41,892
	Lay a concrete foundation	£6,142
	Convert a bungalow loft	£28,892
	Basement conversion cost	£36,280

Business name	Flat roof extension cost
STOYANOV CONSTRUCTION LTD, Forest Hill, SE23	£21,864
CHRIS BALL & SON ROOFING LTD, Forest Hill, SE23	£21,856
NKD Contractors, 65 Dartmouth Road, Forest Hill, London, Greater London, SE23	£21,848
RM Building (London) Ltd, Nr Forest Hill, SE23	£21,864
By design - interior styling and remodelling, London, Se26	£21,944
Albion Roofing Solutions, 2 Dacres Road, Forest Hill, London, Grea, SE23	£21,840
Baseline Build and Renovate Ltd, 87 Selworthy Road, London, London, SE6	£21,840
Five Sextillion, London, SE22	£21,848
BERNARD CONSTRUCTION LTD, East Dulwich, SE22	£21,864
FRIERN BUILDING LTD, East Dulwich, SE22	£21,864
Justin Bailey, Greater London, SE4	£21,944
South East Builders, London, SE4	£21,864
Pure Building & Maintenance Services Limited, Surrey, SE26	£21,944
The Perfectionist, East Dulwich, SE22	£21,888
GreenGauge Heating Limited, Greater London, SE6	£21,944
Global Business BoxLttd, Greater London, SE15	£21,944
babar Jeweler Shop, Kent, SE21	£21,944
1M Construction Ltd, Peckham, SE15	£21,864
J&S Property Services, Greater London, SE22	£21,944
S W BUILDPROVEMENT, Greater London, SE6	£21,944
Universal Plastering Ltd, Greater London, SE19	£21,944
Urban London Development, 242 Gipsy Road, London, Greater London, SE27	£21,848
Martin's Builders & Decorators, 237 Gipsy Road, West Norwood, London, Greater London, SE27	£21,848
Parallax Project Management, Greater London, SE27	£21,944
AADO SERVICES LTD, Flat 2, 33 Campshill Road, London, Greater London, SE13	£21,848

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Flat roof extension cost in Forest Hill

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Flat roof extension cost in Forest Hill

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