1. The applicant shall commence construction no later than three years from the effective date of the zone change. If, within such period, the construction specified in the approved preliminary development plan has not been commenced, the planning director shall notify the planning commission of same and the commission shall consider whether changed circumstances justify a zone change to rescind the PUD zone or if additional time is necessary to be conditioned in order to commence construction of the project. Initiation of a zone change to rescind the PUD zone, or to change any conditions of approval including those extending time periods, shall be subject to the provisions of Section 17.64.070 of this code.

2. If a certificate of occupancy has not been issued for a substantial portion of the dwelling units or other structures in the first phase of a PUD zone within five years of the effective date of the PUD zone as determined by the planning director, he/she shall notify the planning commission of same and the commission shall consider whether changed circumstances justify a zone change to rescind the PUD zone or if additional time is necessary to be conditioned for the project to be completed. Initiation of a zone change to rescind the PUD zone, or to change any conditions of approval including those extending time periods, shall be subject to the provisions of Section 17.64.070 of this code.

3. Where the first phase is substantially developed and the remaining phases are undeveloped or in various stages of development and five years have lapsed since the effective date of the PUD zone as determined by the planning director, he/she shall notify the planning commission of same and the commission shall consider whether changed circumstances justify a zone change to rescind the PUD zone for the area containing the uncompleted phases or if additional time is necessary to be conditioned for the project to be completed. Initiation of a zone change to the PUD zone, or to change any conditions of approval including those extending time periods, shall be subject to the provisions of Section 17.64.070 of this code.