apartment building means a residential use building, or the residential use portion of a mixed-use building, other than a townhouse or stacked townhouse containing four or more dwelling units each of which shall have access to above grade common halls, stairs, elevators, and yards;
Commercial building means a non-residential building other than an agricultural building, an industrial building or an institutional building.
School building means any building in which any of the instruction, extracurricular activities, or training provided by a school is conducted, whether or not any instruction, extracurricular activities, or training provided by the school is being conducted in the school building at the time a criminal offense is committed.
Residential building means a building containing one or more residential dwellings.
Office Building (Premises), means a building or premises or part thereof whose sole or principal use is for an office or for office purposes or clerical work. "Office purposes" includes the purpose of administration, clerical work, handling money, telephone, telegraph and computer operation; and "clerical work" includes writing, book-keeping, sorting papers typing, filing, duplicating, punching cards or tapes, machines calculations, drawing of matter for publication and editorial preparation of matter for publication.