England and Wales: before 1900
marketed sale
Sandstone or limestone, as built, no insulation (assumed)
Solid, no insulation (assumed)
No low energy lighting
Pitched, 200 mm loft insulation
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Room heaters, electric
Mostly double glazing
double glazing installed before 2002
Manual charge control
RHI application
Solid brick, as built, no insulation (assumed)
Suspended, no insulation (assumed)
No low energy lighting
Roof room(s), no insulation (assumed)
Electric storage heaters
Electric immersion, off-peak
electricity (not community)
Portable electric heaters (assumed)
Some multiple glazing
not defined
Manual charge control