At the time a tentative map is submitted, the planning commission shall indicate any usable area proposed to be dedicated for park purposes pursuant to this chapter, and, in addition, if the application is for other than a single-family subdivision, the applicant shall designate on each lot the maximum number of dwelling units to be constructed. The number of dwelling units shown shall be in conformance with the applicable general plan classification of the property or the current zoning, whichever is more restrictive. (Ord. 90-1 (part), 1990)