Area of housing floors constructed in the year is a total area of ​​residential buildings completed and handed over, which is used for living and living activities of households and individuals, including the area of new houses built in the year (apartment buildings, single detached houses) and the area of ​​newly constructed rooms or uplift due to expansion of the existing house.

Self-built house, self-dwelt house completed in the year is housing that households invested (including help, donations, gifts) and built by themselves or employed individual labores working freelance to build the construction of residential buildings for the purpose of living and living activities of households.

Social housing in the year is housing held by the State, organizations or individuals of economic sectors to invest in building for sale or lease, hire purchase for those entitled to the preferential policies for housing under the law.