England and Wales: 1950-1966
marketed sale
Cavity wall, as built, partial insulation (assumed)
To unheated space,  no insulation (assumed)
Low energy lighting in 43% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer, TRVs and bypass
assessment for green deal
Cavity wall, as built, no insulation (assumed)
To unheated space, no insulation (assumed)
No low energy lighting
Pitched, 250 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
TRVs and bypass