When it is not necessary for the applicant for a development, enlargement or site alteration to apply for an authorization or special permit, the City Planning Commission shall certify to the Department of Buildings that such development, enlargement or site alteration complies with the regulations of this Chapter, and that no authorization or special permit is required pursuant to this Chapter.

Where natural features are to be protected and maintained under Section 105-60 (MAINTENANCE OF NATURAL FEATURES), the Commission shall indicate in the certification specific conditions and safeguards appropriate to the designated area.