In all districts, at any time a building, structure, or use of land is erected, altered, extended or changed in use or occupancy, there shall be provided for every use off-street parking, loading and access facilities as set forth below as a condition precedent to occupancy of all buildings or land. Off-street parking, loading, and access facilities conforming to the requirements of this article shall be provided as follows:
A. New or moved buildings and uses. Parking and loading facilities as required shall be provided for all buildings and uses constructed, established or moved to new sites.
B. Increase in intensity of use. An increase in the intensity of use of a building or premises shall mean the addition of dwelling units, gross floor area, occupancy or any other unit of measurement used as a basis for determining required parking and loading facilities. Additional parking and loading facilities, as required, shall be provided for any such increases in an existing use.
C. Change in use. When the use of any building or premises is changed to a different use, parking and loading facilities, as required, shall be provided for the different use.
D. Existing facilities. Off-street parking and loading facilities in existence on the effective date of this article shall not be reduced below, or if already less than, shall not be further reduced below the requirements for an equivalent new building or use. In no case shall it be necessary to continue parking and loading facilities in excess of those required by this article.
E. Nonconforming parking and loading facilities. A building, use or occupancy lawfully existing at the time this article or any amendment thereto becomes effective, but which does not conform with the off-street parking and loading requirements, may be occupied or continued without such facilities being provided. Any such spaces that may be provided thereafter shall comply with the requirements of this article. If an existing building, use or occupancy is altered so that there is an increase in the number of dwelling units, seating capacity, employees or floor area, or if the use is changed to one requiring more off-street parking and loading spaces, the number of such spaces shall be provided at least equal to the number required for the increased area of the building or use in accordance with all provisions of this article.
F. Vehicle reference. The term "vehicle," as used in this section, shall include, but not be limited to, automobiles, motorcycles, trucks, recreational vehicles, campers and trailers, including recreational and boat trailers.