England and Wales: 1930-1949
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation (assumed)
Electric storage heaters
Community scheme
electricity (not community)
Portable electric heaters (assumed)
Some double glazing
double glazing installed before 2002
Manual charge control
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, insulated
Low energy lighting in all fixed outlets
Pitched, insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
High performance glazing
double, known data
Time and temperature zone control