England and Wales: 2007 onwards
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, insulated (assumed)
Low energy lighting in 28% of fixed outlets
Roof room(s), insulated (assumed)
Boiler and underfloor heating, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed during or after 2002
Time and temperature zone control
marketed sale
Cavity wall, as built, insulated (assumed)
Solid, insulated (assumed)
Low energy lighting in 28% of fixed outlets
Roof room(s), insulated (assumed)
Boiler and underfloor heating, mains gas
From main system
mains gas (not community)
Fully double glazed
double glazing installed before 2002
Programmer and at least two room thermostats