England and Wales: 1900-1929
marketed sale
Sandstone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 9% of fixed outlets
Pitched, no insulation
Room heaters, mains gas
Electric immersion, standard tariff
mains gas (not community)
Portable electric heaters (assumed)
Some double glazing
double glazing installed before 2002
Appliance thermostats
none of the above
Sandstone or limestone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs