• Data reference period (Month)
• Geographic localization (NUTS - 2013)
• Type of construction

• DWELLING:  Separate and independent place which, by the way it was built, rebuilt, enlarged, transformed or is being used, is intended for housing with the condition that it is not being used for other purposes at the time of reference: by separate it is meant that it is surrounded by conventional walls or other type, is covered and allows a person or group of persons to sleep, prepare meals or shelter from the weather separately from other members of the community; by independent it is meant that its occupants do not have to cross other accommodations to enter or leave the accommodation where they live.
• REFERENCE PERIOD:  The length of time for which data are collected, e.g. a specific day, month or year.

Number of bank evaluation of living quarters for the reference period.