"Mark only one circle. Detached means there is open space on all sides, or the house is joined only to a shed or garage. Attachedmeans that the house is joined to another house or building by at least one wall which goes from ground to roof. Mark A one-family house detached from any other house when a mobile home or trailer has had one or more rooms added or built onto it: a porch or shed is not considered a room. Count all occupied and vacant living quarters in the house or building, but not stores or office space."