Extend your Gwynedd with an extension

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Flat roof extension cost in Gwynedd

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 Gwynedd?

A flat roof extension ranges from the cheapest of £21,080 (Building & Flat Roofing Contractors based in LL54) to the dearest of £21,120 (WJ Builders based in LL53), 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 Gwynedd by posting a job with HaMuch. We'll send it to extension builders in Gwynedd.

Estimates for flat roof extension near Gwynedd

Estimates for common extension builder jobs in Gwynedd;

JobEstimate
Underpinning a house£16,600
Build a two storey extension£86,650
Build a timber frame extension£25,100
Install a swimming pool£80,100
Cost to build a single storey extension£37,000
Cost to build a side return extension£31,375
Install an RSJ£1,300
Build an outbuilding£9,100
Build a mansard loft conversion£51,100
Cost of a loft conversion£25,313
Build a kitchen extension£41,100
Build a hip to gable loft conversion£41,100
Build a granny annexe£86,100
Build a garden office£9,100
Convert a garage£15,100
Build a new garage£17,600
Build a flat roof extension£21,100
Build a dormer loft conversion£41,100
Lay a concrete foundation£5,350
Convert a bungalow loft£28,100
Basement conversion cost£27,375
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Rates for other Gwynedd 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 Gwynedd
Estimate Flat roof extension cost in Gwynedd based on hourly/daily rate (excluding VAT or callout charges)
Business name Flat roof extension cost
WJ Builders, Pwllheli, LL53 £21,120
Building & Flat Roofing Contractors, Caernarfon, LL54 £21,080

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Flat Roof Extension near Conwy£26£206
Flat Roof Extension near Conway£24£184
Flat Roof Extension near Llandudno£24£184
Flat Roof Extension near Colwyn Bay£26£206
Flat Roof Extension near Rhyl£24£178