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Flat roof extension cost in CB3

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 CB3?

A flat roof extension ranges from the cheapest of £21,760 (James Burch Roofing based in CB23) to the dearest of £23,200 (ALLIED BUILDING ASSOCIATES LTD based in CB22), 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 CB3 by posting a job with HaMuch. We'll send it to extension builders in CB3.

Estimates for flat roof extension near CB3

Estimates for common extension builder jobs in CB3;

JobEstimate
Underpinning a house£17,402
Build a two storey extension£87,853
Build a timber frame extension£25,902
Install a swimming pool£80,902
Cost to build a single storey extension£53,035
Cost to build a side return extension£40,395
Install an RSJ£2,102
Build an outbuilding£9,902
Build a mansard loft conversion£51,902
Cost of a loft conversion£32,829
Build a kitchen extension£41,902
Build a hip to gable loft conversion£41,902
Build a granny annexe£86,902
Build a garden office£9,902
Convert a garage£15,902
Build a new garage£18,402
Build a flat roof extension£21,902
Build a dormer loft conversion£41,902
Lay a concrete foundation£6,152
Convert a bungalow loft£28,902
Basement conversion cost£36,395
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Rates for other CB3 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 CB3
Estimate Flat roof extension cost in CB3 based on hourly/daily rate (excluding VAT or callout charges)
Business name Flat roof extension cost
IJC Building Services Ltd, Highfields, CB23 £21,848
SturdyBuild, 34 Thornton Close, Cambridge, Cambridgeshire, CB3 £21,848
Baufritz (UK) Limited, Baufritz UK, Cambridge, Cambridgeshire, CB3 £21,848
Louise Swarbrick Design, Cambridgeshire, CB3 £21,928
James Burch Roofing, Great Cambourne, Cam, CB23 £21,760
WESTWICK BUILDERS LIMITED, Over, CB24 £21,832
Fenlake Construction, Cambridgeshire, CB23 £21,936
CROWNBUILD, Cambrigde Central South, CB1 £21,840
Beaumont Construction, Cambridge, Cambridge, Cambridgeshire, CB1 £21,856
SK Builders and Decorators Ltd , Cambridge, CB4 £21,760
Coulson Building Group, William James House, Cowley Road, Cambri, CB4 £21,856
SP-Building Services Ltd, Cambridge, CB5 £21,856
Emerald Carpentry & Building Services Ltd, Cambridge, CB24 £21,920
TSN Consultants Ltd, Cambridge, CB1 £21,864
CREATIVE BUILDING & LANDSCAPE, Over, CB24 £21,832
M OLIVER BUILDING, Royston, SG8 £21,816
D Stebbings, Cambrigde Central South, CB1 £21,832
EXP Property Maintenance, Suite 18, Middle Court Copley Hill Busin, CB22 £21,848
DEBRAY BUILDERS, Little Shelford, CB22 £21,832
ALLIED BUILDING ASSOCIATES LTD, Cambridge, CB22 £23,200
BOB BLACK CONSTRUCTION LTD, St Ives, Cambridgeshire, PE27 £21,848
Bob Black Construction Limited, St Ives, Cambridgeshire, PE27 £21,848
ECO DESIGN & BUILD (UK) LTD, Royston, SG8 £21,816
Find a Handyman (Neil), Little Shelford, CB22 £21,840
Silverwood Construction (Cambridge) Ltd, Bluntisham, PE28 £21,880

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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Flat Roof Extension near Cambridge£33£234
Flat Roof Extension near South Cambridgeshire£37£258
Flat Roof Extension near Huntingdon£31£236
Flat Roof Extension near St Neots£42£256
Flat Roof Extension near Biggleswade£35£229
Flat Roof Extension near Ely£32£230
Flat Roof Extension near Huntingdonshire£29£240
Flat Roof Extension near Letchworth£37£239
Flat Roof Extension near Haverhill£32£221
Flat Roof Extension near North Hertfordshire£37£238