England and Wales: before 1900
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, no insulation
Boiler and radiators, wood logs
From main system
wood logs
Room heaters, wood logs
Mostly double glazing
double glazing, unknown install date
TRVs and bypass
marketed sale
Granite or whinstone, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in all fixed outlets
Pitched, 300 mm loft insulation
Boiler and radiators, mains gas, Boiler and underfloor heating, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing, unknown install date
Programmer, room thermostat and TRVs