Article 13-8 ZONE DISTRICT REGULATIONS

13-800     Open Space/Unclassified Zone (O-1).

     A.  Purpose.
 

         The purpose of the Open Space/Unclassified Zone is to provide a zone designation for lands that are either appropriate only for uses of an outdoor/open land nature or for land for which a specific land use has yet to be determined.
 

     B.  Principally Permitted Uses.

          (1)  Public parks.

          (2)  Public utilities (except electrical substations).

     C.  Conditionally Permitted Uses.
 

          Those uses suitable for open land areas following authorization by the Planning and Zoning Commission and the City Council subject to any conditions which the Commission and Council may require including, but not limited to, yard and lot requirements, development standards, sanitation requirements and time constraints.

13-800.1     Rural Estate Planned Unit Development Zone (R-E).

   
     A.  Purpose.
 

          The purpose of the RE Zone is to provide for the development, at a very low density, of single-family detached dwellings in subdivided areas of the community where it is desirable to maintain a semi-rural environment, particularly within the City/County interface boundary.
 

     B.  Principally Permitted Uses.
 

          (1)  Detached single-family site-built dwellings.

    
          (2)  Public Parks.

    
     C.  Conditionally Permitted Uses.

          (1)  Family day care home and group day care home.

    
          (2)  Electrical sub-stations, gas regulating stations, water pump stations, water towers, lift stations.

    
          (3)  Public Buildings.

    
         (4) Church, including a parsonage, convent or monastery and/or accessory living quarters for priests, nuns or ministers provided that these shall be appropriate to the zoning district in which they are to be located.

    
          (5)  Schools.

    
         (6)  Day care center conducted as an accessory use to a church, subject to the requirements of the State of Wyoming.

    
          (7)  Bed and Breakfast Inn, subject to the following requirements:

               (a)  The structure must be owner occupied and not more than two guestrooms shall be permitted.

          
               (b)  The only meal to be provided to guests shall be breakfast.

           
              (c)  Guests may stay no more than six consecutive days.  The establishment may not be operated as a boarding house, and weekly rates cannot be offered.

           
               (d)  The outside appearance of the structure shall not be altered from its single-family appearance.

           
               (e)  One off-street parking space per guestroom shall be provided.

           
               (f)  One advertising sign not to exceed six square feet may be permitted.  The sign may be attached or freestanding and shall not exceed six feet in height.  The sign shall not be a flashing sign, moving sign, or electronic changeable message panel.

         
          (8)  Adult day care center conducted as an accessory use to a church, subject to the requirements of Section 13-807.C.(5).

    
          (9)  Transmission Tower less than fifty (50) feet in height, with setbacks from property lines equal to the height of the tower.

    
          (10)  Day care conducted as an accessory use to a school.

    
     D.  Permitted Accessory Uses.

    
          (1)  Private garages.

    
          (2)  Greenhouses.

    
          (3)  Tool houses, sheds and other similar buildings for the storage of domestic supplies.

    
          (4)  Privately or jointly owned swimming pools, tennis courts, and equestrian arenas (covered or uncovered) for the use and convenience of the residents.

    
          (5)  Signs as regulated by Article 8, Section 13-815.M. of this Ordinance.

    
          (6)  Home Occupations as regulated by Article 8, Section 13-815.N. of this Ordinance

    
          (7)  Animals Accessory to Residential Use:

           
               (a)  Each lot shall be permitted to have 1 horse (or mule in combination) per acre of property accessory to the permitted use but not to exceed two animals.  Un-weaned offspring (six months old or less) will not be considered as part of the total number of animals.

           
               (b)  Horses shall be considered for private use only when the owner of the animal and the occupant of the property upon which the horse is kept are the same party.

           
                (c)  All other domesticated livestock or wild animals are strictly prohibited.

           
                (d)  Grazing/corral areas shall not be located within the front or corner yard.

           
                (e)  Animal Feces and Waste.

                     (1)  Areas of the lot, as well as accessory buildings or structures devoted to the animal shall be maintained and kept in such a manner as to not constitute a nuisance to the surrounding properties or area.

                       
                     (2)  It shall be unlawful for any person to spread, scatter, distribute, drain or deposit in any manner any animal feces and/or waste on property not owned or occupied by them.

           
                 (f)  Dust and/or drainage.

                       
                      (1)  To prevent dust and drainage problems, corral areas shall be limited to 25% of the lot coverage.

                       
                      (2)  Grazing/corral area shall not create a dust or drainage condition beyond the property boundaries.

           
                 (g)  Separation.

                       
                      (1)  Animals shall be kept a minimum distance of 100 feet from any residence.

     E.  Lot Area and Lot Dimensions.

           
          (1)  Required Lot Area:

                Use                  Minimum Lot Area

                Single Family

                Dwelling            2 acres

                Other                Minimum area to be deter-

                Permitted          mined by building area,

                Uses                 parking requirements, and

                                        required setbacks.

          (2)  Required Lot Dimensions

                Use                  Minimum           Minimum

                                        Lot Width          Lot Depth

                Single               100 feet             200 feet

                Family

                Dwelling

               Other Uses      Lot dimensions to be determined by building area, parking requirements, and required
              setbacks.

     F.  Setbacks, Yards, and Heights.

           
          (1)  Minimum Setbacks from Property Line:

          Use                  Front  Interior  Corner  Rear

          Single Family    30’        15’        30’        30’

          Dwelling

          Schools,           30’        30’        30’        30’

          Civic

          Cultural

          and Religious

          institutions

          (including

          accessory use

          structures)

          Structures         30’        15’        30’        15’

          Accessory

          to Single

          Family

          Residences.

          The above listed setback and yard requirements are subject to the following additional requirements:

          Front Setback.  Front setbacks shall be adjusted to a lesser amount than required by this ordinance.  When more than 25 percent of the lots fronting one side of the street between intersections are occupied by structures having setbacks from the street right-of-way of lesser amounts than hereinafter required by this ordinance, the average setback of all existing buildings between the intersection shall be considered an established setback and shall be maintained by all new or relocated structures.  When a building is to be built where there is an established setback less than that required by this ordinance, and there is an existing building on only one contiguous side, the front setback for the new building shall be no greater than that of the existing building on the one side which is contiguous to and contains a building.  If a building is to be built where there is an established setback less than that required by this ordinance, and there are existing buildings on both contiguous sides, the established setback shall be determined by connecting a straight line between the forward most portion of the buildings on the contiguous sides.  An adjustable front setback under this section must be approved by the Planning and Zoning Commission.

           (2)  Maximum Building Height:  28 feet.

    
     G.  Landscaping

    
          Except for single-family lots and their adjacent rights-of-way, all areas not designated for buildings, circulation, parking, or storage shall be landscaped in accordance with Article 8, Section 13-815.C.  Landscaping of public parks shall be the responsibility of the City of Rock Springs.  Landscaping of required buffer zone shall be the responsibility of the developer.

    
     H.  Development Requirements.

    
         (1)  All land zoned RE shall be developed and subdivided as a Planned Unit Development in accordance with Section 13-812 of the Rock Springs Zoning Ordinance.

    
          I.  Minimum District Size
 

          (1)  80 acres with a minimum of two sides adjoining City Limits boundary line.

(Ord. No. 2002-16, 1-21-2003).

13-801     Low Density Residential Zone (R-1).

13-803     Medium Density Residential Zone (R-3).

     A.  Purpose.
    
          The purpose of the R-3 Medium Density Residential Zone is to provide for low to moderate housing densities and directly related complementary uses. The R-3 Zone is intended to create attractive residential neighborhoods while making an economical use of land.
    
     B.  Principally Permitted Uses.
    
          (1)  Single-family dwellings.
    
          (2)  Two-family dwellings.
    
          (3)  Public parks.
    
     C.  Conditionally Permitted Uses.
    
          (1)  Family day care home and group day care home. (Ord. No. 86-11,8-5-86).
    
          (2)  Electrical sub-stations, gas regulating stations, water pump stations, water towers, lift stations.
    
          (3)  Public buildings.
    
          (4)  Church, including a parsonage, convent or monastery and/or accessory living quarters for priests, nuns or ministers provided that these shall be appropriate to the zoning district in which they are to be located. (Ord. No. 88-09, 6-21-88).
    
          (5)  Schools.
    
          (6)  Day care center conducted as an accessory use to a church, subject to the requirements of the State of Wyoming. (Ord. No. 86-11,8-5-86).
    
          (7)  Nursing homes and rest homes. (Ord. No. 88-09, 6-21-88; Ord. No. 90-10, 9-18-90).
   
          (8)  Bed and Breakfast Inn, subject to the requirements of Section 13-801.C.(7). (Ord. No. 90-11, 1-15-91).
    
          (9)  Adult day care center conducted as an accessory use to a church, subject to the requirements of Section 13-807.C.(5). (Ord. No. 93-15, 9-7-93).
    
          (10)  Transmission Tower less than fifty (50) feet in height, with setbacks from property lines equal to the height of the tower.
    
          (11)  Day care conducted as an accessory use to a school.
    
     D.  Permitted Accessory Uses.
    

          All accessory uses permitted in the R-1 Zone.
    
     E.  Lot Area and Lot Dimensions.
    
          (1) Required Lot Area:

               Use                     Minimum Lot Area

               Single-family         5,000 square feet
               dwelling

               Two-family            8,000 square feet

               Other uses           Minimum area to be determined by building area, parking
                                          requirements, and required setbacks.

          (2)  Required Lot Dimensions:

                Minimum             Minimum
                Use                     Lot Width       Lot Depth

                Single-family        50 feet            90 feet
                dwelling

                Two-family           35 feet            90 feet
                dwelling               per unit

                Other Uses          Lot dimensions to be determined by building area, parking
                                           requirements, and required setbacks.

     F.  Setbacks, Yards, and Heights.
    
          (1)  Minimum Setbacks from Property Line:

                 Interior                          Corner
                 Use                   Front    Side    Side    Rear
   
                 Single-family     20'           6'*     20'       20'
                 dwelling

                 Two-family        20'           10'    20'       20'
                 dwelling

                 Schools, civic,  30'           30'    30'       30'
                 cultural and
                 religious
                 institutions
                 (including their
                 accessory use
                 structures).

                 Structure          20'            3'    20'         3'
                 accessory to
                 single family
                 residences.

                 (Ord. No. 86-11,8-5-86; Ord. No. 92-09, 5-5-92).

                 Additional setback regulations as described in Sections 13-801 .F.(1) apply to the R-3 Zone.

                 *16' total both sides; one side shall have a minimum setback of 10'. (Ord. No. 84-8, 7-84; Ord. No. 86-11,

                   8-5-86).

         (2) Maximum Building Height: 28 feet.
   

     G.  Landscaping.

     Except for single-family and two-family lots and their adjacent rights-of-way, all areas not designated for buildings, circulation, parking, or storage shall be landscaped in accordance with Article 8, Section 13-815.C. Landscaping of public parks shall be the responsibility of the City of Rock Springs.

(99-21, Amended, 06/01/1999, Prior Text; 98-04, Amended, 05/05/1998, Prior Text; 97-12, Amended, 12/02/1997, Prior Text; 96-10, Amended, 07/02/1996, Prior Text)
 

 13-804  Medium Density Residential Zone (R-4).

     
     A.  Purpose.

     
     The purpose of the R-4 Medium Density Residential Zone is to provide for medium density housing in multiple-family structures and directly related complementary uses. The R-4 Zone is designed to allow highly economical use of land while creating an attractive, functional and safe residential environment.

     
     B.  Principally Permitted Uses.

     
          (1)  Two-family dwellings.

     
          (2)  Three-family dwellings.

     
          (3)  Four-family dwellings.

     
          (4)  Townhouse clusters not to exceed six (6) units or 160 feet, whichever is attained first.

     
          (5)  Public parks.

     
     C.  Conditionally Permitted Uses.

     
          (1)  Electrical sub-stations, gas regulating stations, water pump stations, water towers, lift stations.

     
          (2)  Family day care home and group day care home (Ord. No. 86-11,8-5-86).

     
          (3)  Public buildings.

     
         (4) Church, including a parsonage, convent or monastery and/or accessory living quarters for priests, nuns or ministers provided that these shall be appropriate to the zoning district in which they are to be located. (Ord. No. 88-09, 6-21-88).

     
         (5)  Schools.

     
        (6)  Day care center conducted as an accessory use to a church, subject to the requirements of the State of Wyoming. (Ord. No. 86-11,8-5-86).

     
         (7)  Nursing homes and rest homes. (Ord. No. 88-09, 6-21-88; Ord. No. 90-10, 9-18-90).

     
         (8)  Adult day care center conducted as an accessory use to a church, subject to the requirements of Section 13-807.C.(5). (Ord. No. 93-15, 9-7-93).

     
         (9)  Transmission Tower less than fifty (50) feet in height, with setbacks from property lines equal to the height of the tower.

     
         (10)  Day care conducted as an accessory use to a school.

     
        (11)  Adult Day Care Center conducted as an accessory use to a private residence for up to four (4) adults in accordance with Wyoming Adult Day Care Licensing standards.

     
     D.  Permitted Accessory Uses.

     
          All Accessory Uses permitted in an R-1 District.

     
     E.  Lot Area and Lot Dimensions.

     
          In determining minimum lot area and minimum lot dimensions, the following table should be used:

          Minimum     Minimum     Outdoor

          Lot Area      Lot              Living

          Use                 Per Unit            Dimensions Area

          Two-                3,500 sq.ft.       Width: 70'    600 sq.ft./

          Family                                     Depth: 90'    dwelling unit

          Three-              3,000 sq.ft.       Width: 90'    500 sq.ft./

          Family                                     Depth: 90'    dwelling unit

          Four-                2,500 sq.ft.       Width: 90'    400 sq.ft./

          Family                                     Depth: 90'    dwelling unit

          Town-               2,000 sq.ft.       Width: 120'  400 sq.ft./

          house                                      Depth: 90'    dwelling unit

          Other Permitted Uses:  Minimum area and lot dimensions to be determined by building area, parking requirements and required setbacks.

          *Outdoor Living Area in the minimum amount specified above must be provided on any lot occupied by the multiple residence or townhouse building. This space must be easily accessible for daily recreational use by the occupants of the building. Driveways, parking areas, ornamental landscaped areas (having a width of less than 20 feet), and required side or front yards shall not be considered as Outdoor Living Area, except in the case of interior townhouse units where said unit is less than 20 feet in width, in which case the minimum width of the outdoor living area shall be the width of the lot.

     
     F.  Schedule of Allowances.

     
          The minimum lot areas in 13-804 E may be adjusted according to the following except allowance shall not be made for two or three family dwellings.

     
           (1)  For each parking stall in or under the residence or otherwise completely underground, subtract 400 sq. ft. from the total minimum lot area.

     
           (2)  For each unit with a balcony or patio of not less than 40 sq. ft., subtract 100 sq. ft. from the Outdoor Living Area.

     
     G.  Setbacks, Yards, and Heights.

     
          (1)  Minimum Setbacks from Property Line:

                                           Interior           Corner

                Use                  Front  Side      Side     Rear

                Two-family         20'      10'        20'           20'
 

                Three-family       20'      10'        20'           20'
 

                Four-family        20'      15'        20'           20'
 

                Townhouse        20'      15'        20'           20'
 

                Schools, civic,   30'      30'        30'           30'

                cultural and

                religious

                institutions

                (including their

                accessory use

                structures).

                Structure           20'      3'          20'           3'

                accessory to

                single family

                and two-family

                residences.

                (Ord. No. 86-11, 8-5-86; Ord. No. 92-09, 5-5-92).

     
                Additional setback regulations as described in Sections 13-801 F (1) apply to the R4 Zone.

     
          (2)  Maximum Building Height: 28 feet.

     
     H.  Distance Between Buildings.

     
     When two (2) or more principal buildings are located on one (1) lot, the minimum separation between any two (2) adjacent principal buildings shall be a distance not less than an amount equal to the height of the taller of the two buildings or twenty (20) feet, whichever is greater when developed as a Planned Unit Development. For major and minor site plans, building separation shall be the sum of two interior side yard setbacks.

     
     I.   Accessory Buildings.

     
         (1)  Accessory buildings shall observe the same setback requirements established for the multiple-residence building except that accessory buildings located within the rear yard of the multiple-residence building may be located to within five (5) feet of the rear or interior side property line. The City Council may require common walls for accessory buildings on the same lot where common walls will eliminate unsightly and hazardous areas. Accessory buildings on the same lot shall otherwise be separated by a distance of not less than ten (10) feet.

     
          (2)  Exteriors of accessory buildings shall have an exterior finish compatible to the main structure. Compatibility shall be determined by the City based on type and use of building materials.

     
     J.   Landscaping.

     
          Except for two-family lots and their adjacent rights-of-way, all areas not designated for buildings, circulation, parking, or storage shall be landscaped in accordance with Article 8, Section 13-815.C. Landscaping of public parks shall be the responsibility of the City of Rock Springs.

           (98-04, Amended, 05/05/1998; 97-12, Amended, 12/02/1997; 96-10, Amended, 07/02/1996)