The age of a facility shall be computed from the recorded date of its completion, if available, or otherwise shall be deemed to be one year subsequent to the date of issuance of a building permit for such facility. In any case where, in a single construction phase, an addition to a facility was commenced prior to July 20,1978, which had at the time of its completion a value in excess of seventy-five percent of the full cash value of the original facility, or which increased the gross floor area of the facility by more than seventy-five percent, the age of the facility shall be computed from the recorded date of the completion of such addition, if available, or otherwise such date shall be deemed to be one year subsequent to the date of issuance of a building permit for such addition. When the age of a facility cannot be determined by any of the foregoing means, the building official shall estimate the age for purposes of this chapter.
(Ord. 3048 (part), 1978)