Hertfordshire · East of England
Home Extension Costs in St Albans
St Albans' premium commuter belt position drives home extension costs well above the national average. The city's Victorian, Edwardian, and inter-war housing stock sees very strong demand for loft conversions and rear extensions.
Extension Types Available in St Albans
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 St Albans
£35,000 – £55,000
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 St Albans
£60,000 – £95,000
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 St Albans
£34,375 – £54,688
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 St Albans
£34,875 – £56,250
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 St Albans
£12,188 – £23,438
Typical 15m² project