Hertfordshire · East of England
Home Extension Costs in Watford
Watford's proximity to London drives home extension costs well above the national average. The town's 1930s semis and Victorian terraces see strong demand for loft conversions and rear extensions from homeowners preferring to extend rather than move.
Extension Types Available in Watford
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 Watford
£34,160 – £53,680
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 Watford
£58,560 – £92,720
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 Watford
£33,550 – £53,375
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 Watford
£34,038 – £54,900
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 Watford
£11,895 – £22,875
Typical 15m² project