England and Wales: 1930-1949
marketed sale
Solid brick, as built, insulated (assumed)
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, wood logs
Fully double glazed
double glazing, unknown install date
Programmer, TRVs and bypass
marketed sale
Solid brick, with internal insulation
Suspended, insulated
Low energy lighting in all fixed outlets
Flat, limited insulation (assumed)
Boiler and radiators, LPG
Electric immersion, off-peak
bottled LPG
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs