England and Wales: 1976-1982
marketed sale
Cavity wall, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 25% of fixed outlets
Pitched, 200 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
Some double glazing
double glazing installed during or after 2002
marketed sale
Cavity wall, as built, partial insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 33% of fixed outlets
Pitched, 300 mm loft insulation
Portable electric heaters assumed for most rooms
Electric immersion, off-peak
dual fuel - mineral + wood
Room heaters, dual fuel (mineral and wood)
Mostly double glazing
double glazing, unknown install date
No thermostatic control of room temperature