Unified control/ownership. All land included for the purpose of development within a PUD shall be under the unified control of the applicant for such PUD, whether the applicant be an individual, partnership, corporation, or other entity, and shall be planned and developed as a whole in a single development operation or a definitely programmed series of development operations or phases. The applicant shall provide the Zoning Administrator all of the necessary documents and information that may be required by the Town Attorney to assure the Town that the development project may be lawfully completed according to the plans sought to be approved.