The data for this variable are reported using the following classification(s) and/or list(s):
'Period of construction' refers to the period in time during which the building or dwelling was originally constructed.
'Private dwelling' refers to a separate set of living quarters with a private entrance either from outside the building or from a common hall, lobby, vestibule or stairway inside the building. The entrance to the dwelling must be one that can be used without passing through the living quarters of some other person or group of persons.
Usage: Though 'period of construction' applies to dwellings, a person or private household can be assigned a period of construction classification based on the dwelling in which the person or household usually resides.