All areas counted as required off-street parking areas shall be unobstructed
and free of other uses, except off-street loading or unloading.
In any case where required off-street parking spaces are provided off-site
in group facilities, such off-site parking spaces shall be subject to deed,
lease or contract restrictions acceptable to the Town Attorney of the Town
of Boston, binding the owner, his heirs or assigns to maintain the required
number of spaces available through the life of such use.
All open off-street parking spaces shall be considered as automotive
use areas and shall be subject to the requirements of Article
XXIII, in addition
to the provisions of this section.