England and Wales: before 1900
marketed sale
Cavity wall, as built, no insulation (assumed)
Suspended, insulated
Low energy lighting in 50% of fixed outlets
Pitched, 200 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Room heaters, dual fuel (mineral and wood)
Partial double glazing
double glazing installed during or after 2002
Programmer, room thermostat and TRVs
marketed sale
Solid brick, as built, no insulation (assumed)
Solid, no insulation (assumed)
Low energy lighting in 19% of fixed outlets
Pitched, 100 mm loft insulation
Boiler and radiators, mains gas
From main system
mains gas (not community)
Partial double glazing
double glazing, unknown install date
Time and temperature zone control