§ 153.058 CLUSTER DWELLINGS.
   (A)   Cluster dwelling defined. A CLUSTER DWELLING is a detached single-family dwelling and/or two to four attached dwellings planned as a unified development at a density greater than required for single- family or two-family development and less than permitted in a Multiple Residence District. Cluster dwellings are permitted in R-2 and R-3 Residence Districts, provided there is a municipal water supply and sanitary sewers
   (B)   Lot requirements. Each cluster dwelling shall front on a public dedicated street for the required lot width, except that on a curved street or at the end of a cul-de-sac the required frontage shall not be less than 60% of the required lot width. The minimum area of the development shall be not less than three acres. If lots are proposed to be sold the following minimum lot requirements shall be as follows:
      (1)   Minimum lot area:
         (a)   One unit: 5,000 square feet;
         (b)   Two units attached: 8,000 square feet;
         (c)   Three units attached: 11,000 square feet;
         (d)   Four units: 14,000 square feet.
      (2)   Minimum lot width:
         (a)   Width of the dwelling plus 20 feet but not less than 50 feet for one unit;
         (b)   80 feet for a two-unit building;
         (c)   110 feet for a three-unit building; and
         (d)    140 feet for a four-unit building.
   (C)   Required procedures. If individual lots are to be created and sold the proposed development shall follow the procedures as provided in Chapter 152, the Village Subdivision Regulations. For condominium developments, a public road shall be designed and improved as provided in the Subdivision Regulations.
   (D)   Density (Lot area per dwelling unit). Minimum 7,000 square feet per unit exclusive of public rights-of-way.
   (E)   Utilities. Municipal water supply and sanitary sewers required. Tap-in requirements and fees shall be determined by the Board of Public Affairs.
   (F)   Yard requirements.
      (1)   Front: 20 feet from street right-of-way; corner lots 20 feet from each street right-of-way.
      (2)   Side: 10 feet to each side lot line. In condominium development distance between buildings shall be not less than 20 feet.
      (3)   Rear: 30 feet to rear lot line. In condominium development the distance between buildings shall be not less than 60 feet.
      (4)   Side/rear: In a condominium development the distance between the side of one building and the rear of another building shall be not less than 40 feet.
      (5)   Utility easements shall be not less than 10 feet from a cluster dwelling.
   (G)   Required open space. Not less than 25% of the development area shall be in permanent open space. This area is exclusive of all required yards and required distances between buildings and public rights-of-way.
   (H)   Maximum lot coverage. Maximum coverage of each individual lot shall be not more than 40%. Maximum coverage of the development area shall be not more than 35%.
   (I)   Maximum building height. The maximum building height shall be two stories and shall not be more than 25 feet. Building height is defined as the vertical distance measured from the grade level to the highest point of the building.
   (J)   Off-street parking. There shall be not less than three off-street parking spaces per unit. One of the spaces shall be in an enclosed garage attached to the dwelling unit; the second space may be in a driveway, and the third may be in an off-street parking area in the development or in a driveway.
   (K)   Minimum dwelling unit areas. The minimum floor area shall be not less than 1,000 square feet.
   (L)   Landscaping. All open space areas not kept in a natural state and all yard areas shall be landscaped and maintained with grass, trees and shrubs. Plant materials shall be selected that are indigenous and moderately fast growing. The landscape design shall incorporate the entire development area and consist of an assortment of plants with year-round appeal, which may include annuals, perennials, shrubs, and trees.
   (M)   Development plans. Preliminary and final development plans are required in subdivisions and condominium developments as provided in § 153.094(D).
(Ord. 2006-10, passed 6-26-2006)