England and Wales: 1950-1966
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 70% of fixed outlets
Flat, limited insulation (assumed)
Boiler and radiators, mains gas
From main system, no cylinder thermostat
mains gas (not community)
Partial double glazing
double glazing installed before 2002
Programmer and room thermostat
marketed sale
Timber frame, with additional insulation
Solid, no insulation (assumed)
Low energy lighting in all fixed outlets
Flat, insulated
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