England and Wales: 1900-1929
non marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 91% of fixed outlets
Pitched, 100 mm loft insulation
No system present: electric heaters assumed
No system present: electric immersion assumed
To be used only when there is no heating/hot-water system or data is from a community network
Mostly double glazing
double glazing installed during or after 2002
marketed sale
Cavity wall, filled cavity
Suspended, no insulation (assumed)
Low energy lighting in 50% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, electric
Electric immersion, off-peak
electricity (not community)
Fully double glazed
double glazing installed during or after 2002
Programmer, room thermostat and TRVs