England and Wales: before 1900
marketed sale
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
(another dwelling above)
Boiler and radiators, mains gas
From main system
mains gas (not community)
Some double glazing
double glazing installed before 2002
Programmer, TRVs and bypass
marketed sale
Solid brick, as built, no insulation (assumed)
(another dwelling below)
Low energy lighting in 40% of fixed outlets
Pitched, 100 mm loft insulation
Community scheme
Community scheme
mains gas (community)
Some double glazing
double glazing installed before 2002
Flat rate charging, TRVs