England and Wales: 1950-1966
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 10% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass
marketed sale
Cavity wall, filled cavity
Solid, no insulation (assumed)
Low energy lighting in 10% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass