(A)   Applicability.  A planned unit development (PUD) may be approved by the Planning Commission, as permitted in §§ 158.074(C) and 158.075(C), subject to all the following provisions of this section.
   (B)   Purpose and objectives.
      (1)   Within the limit of these requirements, it is the purpose of the PUD to provide suitable sites for relatively higher density types of residential structures in areas zoned R-10,000 and R-7,500, and to permit the optimum amount of freedom and variety in the design and management of such varying types of residential structures, including one- and two-family units, townhouses, and garden apartments within the areas designated.
      (2)   The following objectives are sought in providing for the PUD:
         (a)   To provide a more attractive and varied living environment than would be possible through the strict application of Residential District requirements;
         (b)   To encourage developers to use a more creative approach in the development of land;
         (c)   To encourage a more intimate, efficient, and aesthetic use of open space; and
         (d)   To encourage variety in the physical development patterns of residential areas.
   (C)   Area.
      (1)   The proposed PUD shall normally include a tract of land not less than 20 acres in a R-10,000 District and ten acres in a R-7,500 District.
      (2)   A PUD may be considered on a parcel of land of less than ten acres if it has a common boundary with a R-7,500 District, but in no case shall a tract of land of less than  five acres be considered.
      (3)   Where the acreage in a PUD project is 100 acres or more, the Planning Commission may approve, as part of the overall plan, a planned commercial center in which C-1  District uses may be located in accordance with this chapter; provided, however, that such planned commercial center is located in a manner as to be an integral part of the development itself and not a means of servicing adjacent areas, or such a basis by which a commercial district may be extended to adjacent properties.
   (D)   Designation of planned unit development.
      (1)   Land zoned properly and meeting the minimum requirements may be designated by the Planning Commission as suitable for a PUD and may be developed by the owner, if the owner so desires, according to the requirements and standards herein.
      (2)   No land shall be designated as a PUD unless it satisfactorily meets such additional criteria as to suitability for such a development as may have been adopted by the Planning Commission. Such criteria shall include but not be limited to present or potential adequacy of schools, and highway access.
   (E)   Type and use of structures.
      (1)   Dwelling units may include single-family, two-family, or multi-family structures, based on density requirements, standards described, the nature of the adjacent development, and compensating features of the development plan. The Planning Commission may also approve places of public assembly, recreational buildings, and accessory buildings if primarily for use by persons residing within the PUD and if located and planned in a manner not detrimental to adjacent properties.
      (2)   The sum of the number of dwelling units in multi-family structures shall not constitute more than 60% of all dwelling units of all types.
   (F)   Density.
      (1)   The gross residential density of a PUD shall not exceed the equivalent of six dwelling units per gross acre. Such density shall be calculated as follows, as applicable to multi-family structures:
         (a)   Each efficiency apartment dwelling unit is equivalent to 0.50 units;
         (b)   Each one-bedroom multi-family or apartment unit is equivalent to 0.75 units;
         (c)   Each two-bedroom multi-family or apartment dwelling unit is equivalent to 1.00 unit; and
         (d)   Each three-bedroom multi-family or apartment dwelling unit is equivalent to 1.50 units.
      (2)   Calculation of gross acreage shall include all land within the PUD tract, regardless of use, and if it abuts an external motorway to which access is permitted may include one-half of the right-of-way thereof, but not exceeding 30 feet.
   (G)   Open space.  Common open space shall comprise not less than 25% of the gross area. Such space shall include land area to be developed as recreational areas or which is designated for the common use of all occupants of the PUD, but shall not include streets, off street parking areas, or utility easements. The Planning Commission must be furnished satisfactory evidence as a condition for approval that such open space area will be continued and that perpetual maintenance is provided for.
   (H)   Sanitary facilities.  Prior to accepting for approval a development plan for a PUD, the Planning Commission must be furnished satisfactory evidence that acceptable community water and sewerage systems will be provided and approved by the Carroll County Health Department and any other agency having jurisdiction over such matters.
   (I)   Development plan.
      (1)   Applications for approval of PUD shall be accompanied by a development plan prepared by a licensed architect, registered civil engineer, professional landscape architect, or other qualified land planner. The development plan shall be to scale and contain sufficient information to establish the identity of proposed uses, grades, and approximate dimensions and locations of proposed structures, streets, parking areas, walkways, easements, and property lines.
      (2)   After approval of the development plan by the Planning Commission, any material change therein shall require a resubmission of such plan for approval. In any case, where an approval has been given by the Planning Commission and construction has not started within one year thereafter, such approval of the PUD shall automatically be terminated.
   (J)   Standards for location of dwelling types.
      (1)   Within 100 feet of any other property in a Residential District, other than a R-7,500 District, dwellings shall be of single-family types.
      (2)   As a condition for approval of a PUD in which multi-family dwellings are proposed, the Planning Commission shall require, over and above other standards herein, that these uses be so arranged and distributed, and appropriately related to public open space, single-family dwellings, or semi-detached dwellings that higher densities are not unreasonably and disproportionately concentrated in these locations, or so located as to concentrate traffic on minor residential streets.
   (K)   Bulk requirements.
      (1)   Bulk requirements shall be as follows:
Min. Lot Area (sq. ft.)
Min. Lot Width (feet)
Front Yard (feet)
Side Yard (feet)
Rear Yard (feet)
Max. No. Dwelling Units per Bldg.
Interior lot
10 (one);
25 (sum of both)
Corner lot
25 (corner) 35 (for both)
Semi-detached (1/2 building)
Interior lot
Corner lot
Apartment houses
Interior yard
Street corner
3,000 per apt. unit
Interior lot
End dwelling (no street corner)
End dwelling
      (2)   Where more than one apartment building is placed on a tract of land and all are considered units, there shall not be less than 60 feet between the long dimensions of any buildings or building groups regardless of the relation between front and rear facades; not less than 25 feet between the ends of the buildings, except that if opposing end walls contain windows that provide over 25% of the light and ventilation to one or more living rooms, the minimum distance between ends of buildings shall be 40 feet.
   (L)   Height regulations.  The maximum height of buildings shall not exceed the height as specified in Chapter 158 for the R-7,500 District.
   (M)   Parking.  Off street parking shall be provided in accordance with this chapter, provided that § 155.078(C) may be waived by the Planning Commission where common parking areas are approved adjacent to any public street right-of-way line.
   (N)   Public hearing.  No public hearing need be held on any application for a PUD; however, a public hearing may be held by the Planning Commission when it deems such hearing to be desirable or necessary in the public interest.
   (O)   Lot frontage.  Lots for multi-family dwellings shall front on a street or, if approved by the Planning Commission, on a common open space where unobstructed access of emergency vehicles is provided.
(Ord. 2019-07, passed 12-12-2019)