All R-4 and OPD-H plans currently in force at the time this ordinance is adopted shall be considered final OPD-H plans, and continue in full force and effect. Applications for approval of new final OPD-H plan shall meet all the requirements of the preliminary OPD-H plan and include the following:
(a) Detailed plans and specifications of the planned development.
(b) Building elevations and floor plans for all structures.
(c) Details of materials to be used for exterior construction.
(d) A landscape plan including screening and buffering, if necessary, between the proposed and existing development.