County Antrim · Northern Ireland
Home Extension Costs in Belfast
Belfast provides very competitive home extension costs, well below the UK national average. The city's distinctive red-brick terraces and suburban semis offer excellent potential for side and rear extensions.
Extension Types Available in Belfast
Single Storey Extension
A single storey rear or side extension is one of the most popular home improvements in the UK, adding valuable living space without the complexity of multi-level construction.
Estimated cost in Belfast
£23,800 – £37,400
Typical 20m² project
Double Storey Extension
A double storey extension adds significant space on two levels, making it cost-effective per square metre compared to two separate single storey extensions.
Estimated cost in Belfast
£40,800 – £64,600
Typical 40m² project
Loft Conversion
A loft conversion transforms unused attic space into a habitable room, offering one of the best returns on investment of any home improvement project.
Estimated cost in Belfast
£23,375 – £37,188
Typical 25m² project
Kitchen Extension
A kitchen extension creates a modern, open-plan living and dining space, typically extending the rear of the property to accommodate a larger kitchen area.
Estimated cost in Belfast
£23,715 – £38,250
Typical 18m² project
Garage Conversion
A garage conversion transforms an existing garage into a habitable room, offering one of the most affordable ways to add living space without building an extension.
Estimated cost in Belfast
£8,288 – £15,938
Typical 15m² project