The applicant for a PUD is encouraged to informally present conceptual or preliminary plans to both the Planning Commission and City Council for review prior to extensive engineering and formal submission of a final development plan. Property proposed to be developed as a PUD must be rezoned to PUD; and the decision to approve a final development plan and to rezone a property to PUD are done concurrently. (Refer to Chapter 1149 and Section 4.04 of the Charter of the City of Tiffin)