§ 153.401 DEVELOPMENT STANDARDS FOR PLANNED DEVELOPMENT DISTRICTS.
   (A)   Minimum area. A planned development shall be comprised of minimum area of two acres, or represent a natural and logical extension of an existing PDD.
   (B)   Permitted use. The following uses are permitted in the PDD:
      (1)   Residential, commercial, and recreational buildings and uses when such mixture provides the best possible living and working environment while safeguarding the use and development of the surrounding area;
      (2)   Residences may be of a variety of types, including one-family, two-family, multiple-family, and other types of dwelling units provided that such combination of dwelling unit types will not interfere with orderly and reasonable platting of an area if such area is to be platted or replatted;
      (3)   Multiple-family dwelling units may be located in buildings containing or intended to contain commercial and/or office activities. Dwelling units shall not be permitted on any floor on which commercial and/or offices are located or intended to be located, unless separated therefrom by a fireproof wall as provided in the building regulations; and
      (4)   Dwellings with common party walls may be constructed on a sub-lot and separately conveyed subject to compliance with all of the following conditions:
         (a)   Each sub-lot shall be located in an area of the PDD that is to become a recorded subdivision;
         (b)   The allowable number of sub-lots shall be determined by dividing the area to be platted by the density limits of the PDD. In no case, however, shall a sublot have an area of less than 2,000 square feet nor more than one one-dwelling unit thereon. For density computation purposes any land used for streets, or any land not suitable for residential development, shall not be included, with the exception of such land as will be permanently dedicated for park or recreation space, and open space to be held in common ownership;
         (c)   Off-street parking. There shall be at least two off-street parking spaces for each dwelling unit; refer to § 153.125(B)(4) for location;
         (d)   The height requirements of the PDD district shall apply;
         (e)   Use of common areas: when the proposed sub-lots are located in a subdivision which also contains areas to be held in common ownership by the respective owners of lots or sub-lots, such common area may be used for open space uses, for accessory buildings, and for recreational facilities; and
         (f)   Access: each sub-lot shall have access from a parking area or public or private street.
   (C)   Accessory uses.
      (1)   Signs, subject to the requirements in §§ 153.145 through 153.169, applying to a particular use or type of use shall apply to such use even though located in the Planned Development District. The City Planning Commission shall have the authority to decide any questions involving signs in the PDD that may arise because of the innovative design of the development. The City Planning Commission may accept, reject, or modify the size, content, design, location, lighting, and overall appearance of all proposed signs not provided for in §§ 153.145 through 153.169.
      (2)   Accessory uses for PDD are the approved customary accessory or associate uses such as, but not limited to, private garages, storage spaces, parks, recreational and community activities and shall be permitted in the PDD as deemed appropriate by the City Planning Commission.
   (D)   Density requirements.
      (1)   Because land is used more efficiently in the PDD, improved environmental quality can often be produced with a greater number of single dwelling units per net acre than is usually permitted in traditionally zoned residential districts. The maximum density permitted in a PDD, based upon the zoning district the proposed PDD was formerly located in, is as follows:
 
R-1A Districts
4 dwelling units per acre
R-1 Districts
8 dwelling units per acre
R-2 Districts
20 dwelling units per acre
R-3, R-4 Districts
35 dwelling units per acre
RO-1, B-1, B-1A Districts
50 dwelling units per acre
B-2, M-1, M-2, M-3 Districts
50 dwelling units per acre
B-3 Districts
50 dwelling units per acre
 
      (2)   In determining the maximum number of dwelling units which will be permitted, any public rights-of-way or private easement used or proposed for streets or any land not suitable for residential development shall not be included, with the exception of such land as will be permanently dedicated for park or recreation space, and open space to be held in common ownership.
   (E)   Yard and setback requirements. Specific yard and setback requirements of the former zoning district(s) in which the PDD is now located shall be used as a guide and these may be modified to the extent that lot sizes may be reduced or yard areas eliminated in lieu of providing common space.
   (F)   Height. The height regulations in the PDD provide that any buildings exceeding a height of three stories or 35 feet shall be approved as to specific height by the City Planning Commission. Approval shall be based upon findings regarding light, air circulation, views, and airport flight patterns.
   (G)   Off-street parking. There will be compliance with the off-street parking and loading requirements of the PDD and §§ 153.125 through 153.132 for the particular use involved, except that the number of spaces required may be reduced in a PDD if approved by the City Planning Commission as part of the area plan. Such reduction shall be justified by the applicant and shall be based upon a finding that sufficient parking will be available through sharing of spaces by different uses (refer to § 153.125(B)(12) regarding joint sharing of parking areas), that the parking requirement is excessive for the type of use proposed, that walk-in trade for commercial centers will reduce parking demand, or similar factors.
   (H)   Circulation and access.
      (1)   Each lot or principal building in a PDD shall have vehicular access from a parking area or public or private street.
      (2)   Each lot or principal building in a PDD shall have pedestrian access from a public or private sidewalk or walkway where deemed necessary by the City Planning Commission. All parts and phases of the PDD shall be interconnected by a walkway system which will provide for the necessary, safe, and convenient movement of pedestrians. A bicycle path system may also be provided in the PDD and may be part of the sidewalk system where approved by the City Planning Commission. Said system shall be connected to the public sidewalk system.
      (3)   Public streets to be dedicated to the city shall be designed and constructed according to city standards established for public streets. Private streets need not be constructed to city standards. However, if in the future private streets in a PDD are to be dedicated to the city, the owners shall first fully agree to bear the full expense of repair, construction, or any other action required to make streets meet city standards. However, this latter provision shall be incorporated in the private covenants running with the land.
      (4)   An individual dwelling unit in any single-family, two-family townhouse, or similar residential structure shall not have direct access to a collector or arterial street.
   (I)   Utilities.
      (1)   Each principal building in a PDD District shall be directly or indirectly connected to public water and the sanitary sewer system.
      (2)   Each structure or parking facility in a PDD District shall be provided with adequate on-site storm drainage.
      (3)   Electrical, telephone, and cable television lines shall be underground. Waiver of this requirement may be granted by the Board of Appeals on Zoning in floodplain areas upon showing of excessive cost or potential danger.
   (J)   Recreation space regulations.
      (1)   Minimum recreation space ratio (RSR), as defined in § 153.021, and recreation space, as defined in § 153.021, shall be computed for any development in a PDD District as follows, except that at least 10% of the total land area within a PDD shall be in such recreation space:
Former Zoning District
Minimum Recreation Space Ratio
Former Zoning District
Minimum Recreation Space Ratio
R-1, R-1A
.24
R-2
.24
R-3, R-4
.17
RO-1, B-1, B-1A
.15
B-2, M-1, M-2, M-3
.11
B-3
.09
RSR = Recreation Space ÷ Floor Space
 
      (2)   Recreation space shall be conveniently and equitably located through the PDD in relation to the location of dwelling units and natural features.
      (3)   Recreation space shall have minimum dimensions which, in the City Planning Commission’s opinion, are usable for the functions intended and which will be maintainable.
      (4)   The City Planning Commission may require that natural amenities such as ravines, rock outcrops, wooded areas, tree or shrub specimens, unique wildlife habitats, ponds, streams, and marshes be preserved as part of the open space system of the PDD.
   (K)   Compatibility to adjacent land uses. Grouping of buildings, uses, and parking shall be compatible to building arrangements within the development itself as well as with surrounding development. No building arrangement shall be approved which adversely affects surrounding properties.
(Prior Code, § 153.426) (Ord. D-1418, § 2102, passed 11-22-1982, effective 1-21-1983; Ord. O-9, passed 6-30-2003, effective 7-10-2003)