Should any section, subsection, paragraph, sentence, clause, provision or phrase of this chapter be declared by any court of competent jurisdiction to be unconstitutional or invalid, such decision shall not affect any other portion of this chapter.
This chapter shall be known and may be cited as the "Zoning Ordinance of the City of Mount Vernon."
This chapter shall take effect immediately.
A. 
Except as provided in this section, nothing herein shall require any change in the plans, construction or designated use of a building or structure for which a building permit has been lawfully issued prior to or, under the circumstances noted below, within 60 days after the effective date of this chapter, provided that the proposed use complies with the use requirements of this chapter, and further provided that construction shall begin within six months of the date of such permit; the foundation, or 15%, of the construction valuation shall be completed within one year of the date of such permit; and the entire building or structure shall be completed within two years of the date of such permit.
B. 
In addition, if the Building Commissioner determines that an application (with accompanying construction plans) for a building permit filed prior to the effective date of this chapter meets all requirements of the Zoning Ordinance in existence as of the date immediately prior to the effective date of this chapter, has received all necessary conditional or final approvals by the City Council or the Board of Appeals and complies with the use requirements of this chapter, then the Building Commissioner shall issue all necessary permits within a reasonable time, but not longer than 60 days from such date, provided that the applicant has taken all steps deemed necessary by the Building Commissioner to obtain such permit.
C. 
Any of the above periods may be increased up to 50% by the Building Commissioner, on showing of good cause.
D. 
Notwithstanding the preceding, the Building Commissioner may require any such plans, construction or use to be subject to the site plan approval procedures as set forth in Article VII of this chapter and to be modified to comply with the requirements of this chapter to the extent that the site plan approving agency determines such compliance to be reasonable and practical.