Interviewer instructions
When [the house is] constructed
When [the house is] constructed means the time passed since the construction of this house, i.e. how old is this house, and when it was constructed for the first time. If any addition of minor nature or change has been made in the house after the first construction, then period of construction will be counted from the time of first construction. However, if the addition or change of the new walls have been constructed after demolishing old walls or more than half the building has been newly constructed, then period of construction will be counted from the time of addition or change. Period of construction has been divided in four parts. Fill the oval in this column relevant to duration of construction after asking this question.