Extend your Antrim with an extension

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Flat roof extension cost in Antrim

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 Antrim?

A flat roof extension ranges from the cheapest of £20,960 (Anak based in BT40) to the dearest of £21,600 (FJS CONTRACTS LTD based in BT45), 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 Antrim by posting a job with HaMuch. We'll send it to extension builders in Antrim.

Estimates for flat roof extension near Antrim

Estimates for common extension builder jobs in Antrim;

JobEstimate
Underpinning a house£16,644
Build a two storey extension£86,717
Build a timber frame extension£25,144
Install a swimming pool£80,144
Cost to build a single storey extension£37,888
Cost to build a side return extension£31,875
Install an RSJ£1,344
Build an outbuilding£9,144
Build a mansard loft conversion£51,144
Cost of a loft conversion£25,729
Build a kitchen extension£41,144
Build a hip to gable loft conversion£41,144
Build a granny annexe£86,144
Build a garden office£9,144
Convert a garage£15,144
Build a new garage£17,644
Build a flat roof extension£21,144
Build a dormer loft conversion£41,144
Lay a concrete foundation£5,394
Convert a bungalow loft£28,144
Basement conversion cost£27,875
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Rates for other Antrim 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 Antrim
Estimate Flat roof extension cost in Antrim based on hourly/daily rate (excluding VAT or callout charges)
Business name Flat roof extension cost
Oakmore Contracts, Magherafelt, BT45 £21,200
LM Design & Build, Antrim, BT36 £21,168
C McGurk Building Contractor, Belfast , BT44 £21,280
M & M Construction, Mossley, BT36 £21,080
Designco Ltd, Antrim, BT36 £21,152
Belfast Loft Company, Belfast, BT17 £21,104
DGA, Antrim, BT37 £21,160
Ballantine building solutions, Antrim, Bt37 £21,144
H.M.Builders, Andersonstown, BT11 £21,096
Extended living by Gilbert-Ash, 47 Boucher Road, Belfast, BT12 £21,072
C.H Property Services, Falls Road, BT12 £21,088
Finch Construction NI, Antrim, BT28 £21,184
SM Plumbing & Heating, Ormeau, BT7 £21,088
MIRKOW, Cregagh, BT6 £21,088
T.I Building, Ballinderry, BT28 £21,104
R.J Builders, Aghagallon, BT67 £21,144
McEvoy Building & Joinery, Cregagh, BT6 £21,096
Firenstack Solutions, Cregagh, BT6 £21,080
Anak , larne, BT40 £20,960
FJS CONTRACTS LTD, Magherfelt , BT45 £21,600

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Flat Roof Extension near Crumlin£22£168
Flat Roof Extension near Ballyclare£17£110
Flat Roof Extension near Magherafelt£25£200
Flat Roof Extension near Maghaberry£27£175
Flat Roof Extension near Greenisland£20£134
Flat Roof Extension near Belfast£19£132
Flat Roof Extension near Lisburn£20£139
Flat Roof Extension near Carrickfergus£21£145
Flat Roof Extension near Holywood£19£125
Flat Roof Extension near Hillsborough and Culcavy£21£141