Every person, or the agency thereof, owning any building which is used for commercial purposes shall, within thirty (30) days after the effective date of this chapter and within thirty (30) days after the completion of any new building built for a commercial purpose, place the number, which number shall be made of a reflective type material and at least three inches (3") high, of its street address on the front of the building in such a manner that the police, fire department and other persons responding to an emergency can readily locate the building. (Ord. 162, 1-28-1992)