England and Wales: 1930-1949
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 36% of fixed outlets
Pitched, 100 mm loft insulation
Portable electric heaters assumed for most rooms
Gas multipoint
biogas (not community)
Room heaters, 
Fully double glazed
double glazing, unknown install date
No thermostatic control of room temperature
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 36% of fixed outlets
Pitched, 100 mm loft insulation
Electric storage heaters
Gas multipoint
electricity (not community)
Portable electric heaters (assumed)
Fully double glazed
double glazing, unknown install date
Manual charge control