1153.06 DEVELOPMENT STANDARDS.
   The development standards for a PRD shall be determined based upon the characteristics of the land and the development goals for the property.
   (a)   Subdivision of Tract. The entire tract of land proposed for a PRD shall be considered one zoning lot. Any subdivision of land within the zoning lot, following approval of a development plan and, at the election of the applicant, shall not need to comply with lot area, lot width, or yard requirements established for the district in which the PRD is located.
   (b)   Density. The gross density of a PRD shall be based on the underlying district and shall not exceed the following:
 
(1)   In an O District:    0.2 dwelling units per acre;
(2)   In an R-1 District:   2.0 dwelling units per acre;
(3)   In an R-2 District:    2.5 dwelling units per acre;
(4)   In an R-3 District:    3.3 dwelling units per acre;
The total number of dwelling units permitted shall be calculated by multiplying the total land area, exclusive of public streets existing at the time the development plan is submitted, by the maximum density permitted per acre.
   (c)   Yard and Building Separation Requirements. The front, side and rear yard requirements may be varied to accommodate a variety of structural patterns, clustering designs, and housing types provided the following setback and building spacing requirements are complied with:
      (1)   The minimum setback from any PRD boundary shall be:
         A.   40 feet for detached dwelling units; and
         B.   50 feet for attached dwelling units.
      (2)   The minimum setback from external streets for any attached or detached dwelling units shall be 60 feet and there shall be no individual curb cuts on external streets.
      (3)   The minimum setback from the pavement of internal public streets for any attached or detached dwelling unit shall be 30 feet.
      (4)   All dwelling units and accessory buildings shall be set back from private streets, parking lots and other primary vehicular accessways a distance not less than 20 feet except that a building setback offset of at least 10 feet is required for every 10 dwellings on the same side of the street. This offset is not necessary if accomplished through other means including, but not limited to, curving the street, providing significant architectural variations between dwelling units or incorporating open spaces at a similar interval as the required offset.
      (5)   For attached dwelling units, in order to ensure reasonable privacy and separation, individual buildings including terraces, decks, and patios shall be separated by at least 20 feet, except that when the windows of living areas and patios, decks and terraces face each other, they shall be separated by at least 85 feet. This distance may be reduced to 60 feet when a vision obscuring wall, fence or landscaping is provided between the mutually visible spaces. Within attached dwelling units, each dwelling shall be offset at least 10 feet from the adjacent dwelling unit.
      (6)   For detached single family dwelling units, in order to ensure reasonable privacy, the following are the minimum separation distances between individual buildings including terraces, decks, and patios:
         A.   Side – 20 feet, except that it may be reduced to 10 feet when garage walls are facing garage walls or secondary living areas provided that there are no door or window openings unless approved by the Fire Department;
         B.   Rear - 60 feet, except that this distance may be reduced to 50 feet for decks or patios if a vision obscuring decorative wall or landscaping is provided.
   (d)   Open Space Requirements. A minimum of 35% percent of the total area in a proposed PRD shall be devoted to public and/or private open space, preservation areas, recreational areas, or recreational facilities.
      (1)   Land area devoted to parking areas, land fragments between two or more buildings and between buildings and parking areas, and required yards between property lines and buildings and between property lines and parking areas shall not be included as open space.
      (2)   The required amount of open space reserved under a PRD shall either be: held in corporate ownership by owners of the project area, for the use of each owner who buys property within the development; dedicated to a homeowners' association who shall have title to the land which shall be retained as common open space for parks, recreation and related uses; or offered for dedication to the City for perpetual preservation as a natural area or public recreational use.
      (3)   The legal articles relating the organization of the homeowners association are subject to review and approval by the Planning Commission and Council and shall provide adequate provisions for the perpetual care and maintenance of all common areas.
      (4)   Public utility and similar easements and rights-of-way are not acceptable for common open space dedication unless such land or right-of-way is useable as a trail or similar purpose and has been approved by the Planning Commission.
      (5)   The responsibility for the maintenance of all open spaces shall be specified by the developer before approval of the final development plan.
      (6)   Such open space, including any recreational facilities proposed to be constructed in such space, shall be clearly shown on the development plan.
   (e)   Requirements for Public Sites. Regardless of the facilities, sites or open space area to be privately or commercially owned and operated, the developer shall provide land for public sites, public parks and/or playgrounds, or public open space as set forth in Section 1185.03.
   (f)   Required Parking. Parking spaces shall be provided in accordance with the requirements and design standards set forth in Chapter 1181, except that there shall be an average of 2.5 parking spaces per unit for the total development.
   (g)   Signs. Signs shall be erected in compliance with the regulations specified in Chapter 1183.
   (h)   Additional Standards. Site specific development requirements formulated to achieve the objectives of the PRD shall be established at the time the site plan and conditional use request are reviewed. Any dimensional specifications adopted with such plan become binding land use requirements for the proposed planned residential development.
      (Ord. 2007-222. Passed 1-10-08.)