England and Wales: before 1900
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 40% of fixed outlets
Roof room(s), no insulation (assumed)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Mostly double glazing
double glazing installed before 2002
Programmer, room thermostat and TRVs
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 60% of fixed outlets
Roof room(s), ceiling insulated
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, electric
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs