Wiltshire · South West
Home Extension Costs in Swindon
Swindon's central southern location offers moderate home extension costs around the national average. The town's mix of Victorian railway housing and modern estates provides varied options for extension projects.
Extension Types Available in Swindon

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 Swindon
£29,400 – £46,200
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 Swindon
£50,400 – £79,800
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 Swindon
£28,875 – £45,938
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 Swindon
£29,295 – £47,250
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 Swindon
£10,238 – £19,688
Typical 15m² project