Extend your Borehamwood with an extension

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Flat roof extension cost in Borehamwood

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 Borehamwood?

A flat roof extension ranges from the cheapest of £21,848 (Ardent Home Improvements Ltd based in WD6) to the dearest of £22,800 (CLJ Building Ltd based in HA7), 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 Borehamwood by posting a job with HaMuch. We'll send it to extension builders in Borehamwood.

Estimates for flat roof extension near Borehamwood

Estimates for common extension builder jobs in Borehamwood;

JobEstimate
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
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Rates for other Borehamwood trades

Appliance Repair Specialist
Bathroom Fitter
Builder
Carpenter and Joiner
Cleaner
Conservatory Specialist
Door Fitter
Drain Specialist
Driveway Specialist
Electrician
Extension Builder
Fencer
Fire and Security Specialist
Flooring Specialist
Gardener
Handyman
Heating Engineer
Kitchen Fitter
Landscaper
Painter and Decorator
Patio and Path Specialist
Plasterer
Plumber
Removals and Storage
Roofer
Tiler
Window Fitter
Flat roof extension cost in Borehamwood
Estimate Flat roof extension cost in Borehamwood based on hourly/daily rate (excluding VAT or callout charges)
Business name Flat roof extension cost
BBC, Hertfordshire, WD6 £21,960
Monarchy Building Services Ltd, Hertfordshire, WD6 £21,960
London Roofing Building Ltd, Borehamwood, WD6 £21,888
Ardent Home Improvements Ltd, 20 Carrington Avenue, Borehamwood, Hertfordshire, WD6 £21,848
Ardent Home Improvements Ltd, 20 Carrington Avenue, Borehamwood, Hertf, WD6 £21,848
Harris Calnan Construction, One Oak Court, Warwick Road, Borehamwood, Herefordshire, WD6 £21,848
Mandala Building Services, Hertfordshire, WD6 £21,960
Lukpol Building Services, Borehamwood, WD6 £21,848
LF Gjabri Contractions Ltd, Hartfordshire , WD6 £21,888
K&K Building Contractors Ltd, London, Hertfordshire, WD6 £21,848
mleriotconstruction, BOREHAMWOOD, WD6 £21,896
Deluxe Construction, A1 Golf Activity Centre, London, Hertfordshire, EN5 £21,856
V and T Homes Limited, London, Greater London, wd6 £21,848
ROMEO LEVITCHI GENERAL BUILDER, Edgware, HA8 £21,880
Aspirations Design, 29 Harrowes Meade, Edgware, London, Greater London, HA8 £21,848
RM GRAND BUILDERS LTD, Lynford Gardens Edgware, London, HA8 £21,848
CLJ Building Ltd, Stanmore, HA7 £22,800
Optma Builders ltd, 25 Endersby Road, Barnet, EN5 £21,848
CORTESE CONSTRUCTION, Greater London, NW7 £21,960
United Builders Exclusive, Pinner, ha7 £21,960
ARI Studio LTD, 7 Bridge Court, Craigmount, Radlett, Her, WD7 £21,856
JD Martin, POTTERS BAR, Hertfordshire, EN6 £21,848
Crest Construction and Interiors Ltd, Edgware, HA8 £21,888
Griggs Homes, 13 Beaumont gate, Radlett, wd7 £21,856
NW London Contracts Ltd, Greater London, NW7 £21,960

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Flat Roof Extension near Borehamwood£37£238
Flat Roof Extension near High Barnet£37£236
Flat Roof Extension near Bushey£37£240
Flat Roof Extension near Potters Bar£38£240
Flat Roof Extension near Brent Cross£37£237
Flat Roof Extension near Watford£37£239
Flat Roof Extension near Harrow£37£235
Flat Roof Extension near Muswell Hill£38£237
Flat Roof Extension near St Albans£52£246
Flat Roof Extension near Hatfield£53£244