England and Wales: 1950-1966
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 43% of fixed outlets
Pitched, 250 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Fully double glazed
double glazing installed during or after 2002
Programmer and room thermostat
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
No low energy lighting
Pitched, 250 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Multiple glazing throughout 
not defined
Programmer and room thermostat