Devon · South West
Home Extension Costs in Plymouth
Plymouth provides competitive home extension costs in the South West, below the national average. The city's coastal location and varied housing stock offer unique opportunities for extensions with sea views.
Extension Types Available in Plymouth

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 Plymouth
£25,200 – £39,600
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 Plymouth
£43,200 – £68,400
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 Plymouth
£24,750 – £39,375
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 Plymouth
£25,110 – £40,500
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 Plymouth
£8,775 – £16,875
Typical 15m² project