Surrey · South East
Home Extension Costs in Guildford
Guildford's affluent Surrey location drives some of the highest home extension costs outside London. The town's substantial detached and semi-detached properties are frequently extended with premium finishes and architectural designs.
Extension Types Available in Guildford
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 Guildford
£35,840 – £56,320
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 Guildford
£61,440 – £97,280
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 Guildford
£35,200 – £56,000
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 Guildford
£35,712 – £57,600
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 Guildford
£12,480 – £24,000
Typical 15m² project