England and Wales: 1900-1929
none of the above
Cavity wall, as built, no insulation (assumed)
To unheated space,  no insulation (assumed)
No low energy lighting
Pitched, no 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
ECO assessment
Cavity wall, filled cavity
(other premises below)
Low energy lighting in 71% of fixed outlets
Pitched, 100 mm loft insulation
Room heaters, electric
Gas multipoint
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer and appliance thermostats