4.4.I.1 Expiration

a. The planned development will expire within three (3) years of the date that the Executive Director of the City Planning Commission approves the planned development drawings if a building permit has not been issued and substantial construction has not been commenced, and no request for an extension of time is pending.

b. For planned developments approved for existing structures, if the planned development has not been established within a period of three (3) years from the date the Executive Director of the City Planning Commission approves the final drawings for a planned development, then the planned development will expire.