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Flat roof extension cost in BT17

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 BT17?

A flat roof extension ranges from the cheapest of £21,072 (Extended living by Gilbert-Ash based in BT12) to the dearest of £21,504 (Terry Design based in BT62), 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 BT17 by posting a job with HaMuch. We'll send it to extension builders in BT17.

Estimates for flat roof extension near BT17

Estimates for common extension builder jobs in BT17;

JobEstimate
Underpinning a house£16,658
Build a two storey extension£86,738
Build a timber frame extension£25,158
Install a swimming pool£80,158
Cost to build a single storey extension£38,167
Cost to build a side return extension£32,031
Install an RSJ£1,358
Build an outbuilding£9,158
Build a mansard loft conversion£51,158
Cost of a loft conversion£25,859
Build a kitchen extension£41,158
Build a hip to gable loft conversion£41,158
Build a granny annexe£86,158
Build a garden office£9,158
Convert a garage£15,158
Build a new garage£17,658
Build a flat roof extension£21,158
Build a dormer loft conversion£41,158
Lay a concrete foundation£5,408
Convert a bungalow loft£28,158
Basement conversion cost£28,031
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Rates for other BT17 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 BT17
Estimate Flat roof extension cost in BT17 based on hourly/daily rate (excluding VAT or callout charges)
Business name Flat roof extension cost
Belfast Loft Company, Belfast, BT17 £21,104
H.M.Builders, Andersonstown, BT11 £21,096
Finch Construction NI, Antrim, BT28 £21,184
Extended living by Gilbert-Ash, 47 Boucher Road, Belfast, BT12 £21,072
T.I Building, Ballinderry, BT28 £21,104
C.H Property Services, Falls Road, BT12 £21,088
McEvoy Building & Joinery, Cregagh, BT6 £21,096
SM Plumbing & Heating, Ormeau, BT7 £21,088
MIRKOW, Cregagh, BT6 £21,088
Firenstack Solutions, Cregagh, BT6 £21,080
AK Building Services, Carryduff, BT8 £21,152
Mount Oriel Conversions & Extensions, Belfast, BT8 £21,096
M & M Construction, Mossley, BT36 £21,080
Designco Ltd, Antrim, BT36 £21,152
LM Design & Build, Antrim, BT36 £21,168
Ballantine building solutions, Antrim, Bt37 £21,144
DGA, Antrim, BT37 £21,160
apex pharaoh ltd, Down, bt30 £21,136
R.J Builders, Aghagallon, BT67 £21,144
N W Doyle & Son, Ballynahinch, BT24 £21,200
The Method Group, Gibson's Hill, Craigavon, BT66 £21,224
Power Construction, Drumgor, BT65 £21,224
G K Contracts Building & Joinery, Banbridge, BT32 £21,416
Terry Design, Belfast, Armagh, BT62 £21,504

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Flat Roof Extension near Lisburn£20£139
Flat Roof Extension near Belfast£19£132
Flat Roof Extension near Carryduff£19£130
Flat Roof Extension near Hillsborough and Culcavy£21£141
Flat Roof Extension near Maghaberry£27£175
Flat Roof Extension near Crumlin£22£168
Flat Roof Extension near Saintfield£20£141
Flat Roof Extension near Holywood£19£125
Flat Roof Extension near Comber£20£142
Flat Roof Extension near Ballynahinch£15£150