England and Wales: 1976-1982
marketed sale
Cavity wall, as built, insulated (assumed)
To unheated space,  no insulation (assumed)
No low energy lighting
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully secondary glazing
secondary glazing
Programmer, TRVs and bypass
marketed sale
Cavity wall, as built, partial insulation (assumed)
(another dwelling below)
Low energy lighting in 50% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Single glazed
not defined
Programmer, room thermostat and TRVs