When a new building is constructed or a building is structurally altered or the use is substantially changed, the minimum off-street parking and loading space to be provided on the lot shall be as indicated in Larkspur Municipal Code Chapter 18.56. (Ord. 1030 § 2(12), 2018; Ord. 313 § 21, 1965; Ord. 295 § 179, 1962)