England and Wales: 1900-1929
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 80% of fixed outlets
Pitched, no insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Fully secondary glazing
secondary glazing
Programmer and room thermostat
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Some double glazing
double glazing installed before 2002
TRVs and bypass