§ 155.172 LOTS AND SETBACKS.
   (A)   General. Subdivision lots shall be in accordance with the land use and design standards set forth in each respective zoning district.
   (B)   Commercial subdivisions.
      (1)   Access.
         (a)   All lots shall abut on a street.
         (b)   For the purposes of establishing lot lines, street right-of-way lines shall be considered as the front line of lots and tracts bordering such street.
         (c)   Lots shall not derive access exclusively from an arterial, major collector, or minor collector. Where driveway access from an arterial, major collector, or minor collector may be necessary for several adjoining lots, the PPC may require that such lots be served by a shared driveway in order to limit possible traffic hazards on such street. Because of their limited nature, shared driveways are not required to meet public roadway requirements.
         (d)   Driveways shall be adequately separated from roadway intersections in order to minimize conflict with intersection traffic. No driveway shall enter the adjoining street at a point closer than the distances shown below to the intersection of the street right-of-way lines, or in the case of a rounded property corner, from the intersection of the street right-of-way lines extended:
            1.   Local street: 50 feet;
            2.   Collectors: 75 feet; and
            3.   Arterials: 100 feet.
      (2)   Orientation and configuration.
         (a)   Side lines of lots shall be at approximately right angles to straight streets and on radial lines on curved streets. Some variation from this requirement is permissible, but pointed or very irregular lots should be avoided.
         (b)   Double frontage lots should not be platted, except that, where desired along interstates, arterials, major collectors, or minor collectors, lots may face on a local street and back on such thoroughfares. In that event a bufferyard of no less than Bufferyard D of § 155.093 shall be provided along the back of each lot.
      (3)   Shape.
         (a)   The depth and width of any lot shall not exceed a 3:1 depth to width ratio.
         (b)   The lot size, width, depth, shape, grade location, and orientation shall be in proper relation to street and block design and to existing and proposed topographical conditions.
         (c)   Building lines shall conform to the provisions of the respective zoning district.
         (d)   Corner lots shall be sufficiently larger than interior lots to allow maintenance of building lines on both streets.
         (e)   Lots abutting a watercourse, drainage way, channel, or stream, outside of the area designated as open space shall have additional minimum width or depth as required to provide an adequate building site and afford the minimum usable area required by the respective zoning district for front, rear, and side yards.
      (4)   Other. Whenever possible, unit shopping centers, based upon sound development standards, should be designed in contrast to the platting of lots for individual commercial use.
   (C)   Industrial subdivisions.
      (1)   Access.
         (a)   All lots shall abut on a street.
         (b)   For the purposes of establishing lot lines, street right-of-way lines shall be considered as the front line of lots and tracts bordering such street.
         (c)   Lots shall not derive access exclusively from an arterial, major collector, or minor collector. Where driveway access from an arterial, major collector, or minor collector may be necessary for several adjoining lots, the PPC may require that such lots be served by a shared driveway in order to limit possible traffic hazards on such street. Because of their limited nature, shared driveways are not required to meet public roadway requirements.
      (2)   Orientation and configuration.
         (a)   Side lines of lots shall be at approximately right angles to straight streets and on radial lines on curved streets. Some variation from this requirement is permissible, but pointed or very irregular lots should be avoided.
         (b)   Double frontage lots should not be platted, except that, where desired along interstates, arterials, major collectors, or minor collectors, lots may face on a local street and back on such thoroughfares. In that event a bufferyard of no less than Bufferyard D of the Unified Development Ordinance shall be provided along the back of each lot.
      (3)   Shape.
         (a)   The depth and width of any lot shall not exceed a 3:1 depth to width ratio.
         (b)   The lot size, width, depth, shape, grade location, and orientation shall be in proper relation to street and block design and to existing and proposed topographical conditions.
         (c)   Building lines shall conform to the provisions of the Unified Development Ordinance.
         (d)   Corner lots shall be sufficiently larger than interior lots to allow maintenance of building lines on both streets. A corner lot shall include a vision clearance space between three feet and 12 feet above the established grade at the street corner which is free from any kind of obstruction to vision. The vision clearance space shall occupy the triangular space at the street corner which is above a diagonal line connecting two points measured 15 feet equidistant from the street corner along each property line.
         (e)   Lots abutting a watercourse, drainage way, channel, or stream, outside of the area designated as open space shall have additional minimum width or depth as required to provide an adequate building site and afford the minimum usable area required by the Unified Development Ordinance for front, rear, and side yards.
      (4)   Other. Reserved.
   (D)   Residential subdivisions; minor.
      (1)   Access.
         (a)   All lots shall abut on a street.
         (b)   For the purposes of establishing lot lines, street right-of-way lines shall be considered as the front line of lots and tracts bordering such street.
         (c)   Lots shall not derive access exclusively from an arterial, major collector or minor collector. Where driveway access from an arterial, major collector or minor collector may be necessary for several adjoining lots, the PPC may require that such lots be served by a shared driveway in order to limit possible traffic hazards on such street. Because of their limited nature, shared driveways are not required to meet public roadway requirements.
      (2)   Orientation and configuration.
         (a)   All residential subdivisions must depict an arrangement of residential lots so as to reduce, to the maximum extent feasible, any nuisance or conflict between residential and agricultural uses, both within the tract and in relation to adjoining and nearby tracts and to demonstrate compatibility of the proposed minor plat and existing agricultural uses.
         (b)   In order to preserve agricultural ground, minor subdivisions in the AG General Agricultural Zoning District shall be laid out in a cluster design. This is best accomplished by contiguously grouping the lots in such a manner so as to consume the least amount of land possible given the constraints of the landscape.
         (c)   Minor subdivision plats must locate and arrange the residential lots so as to protect, to the maximum extent possible, that portion of the tract preserved for agricultural use.
      (d)   Side lines of lots shall be at approximately right angles to straight streets and on radial lines on curved streets. Some variation from this requirement is permissible, but pointed or very irregular lots should be avoided.
      (e)   Double frontage lots should not be platted, except that, where desired along interstates, arterials, major collectors, or minor collectors, lots may face on a local street and back on such thoroughfares. In that event a bufferyard of no less than Bufferyard D of the Unified Development Ordinance shall be provided along the back of each lot.
      (3)   Shape.
         (a)   The depth and width of any lot shall not exceed a 3:1 depth to width ratio.
         (b)   The lot size, width, depth, shape, grade location, and orientation shall be in proper relation to street and block design and to existing and proposed topographical conditions.
         (c)   Building lines shall conform to the provisions of the Unified Development Ordinance.
         (d)   Corner lots shall be sufficiently larger than interior lots to allow maintenance of building lines on both streets. A corner lot shall include a vision clearance space between three feet and 12 feet above the established grade at the street corner which is free from any kind of obstruction to vision. The vision clearance space shall occupy the triangular space at the street corner which is above a diagonal line connecting two points measured 15 feet equidistant from the street corner along each property line.
      (4)   Lots abutting a watercourse, drainage way, channel, or stream, outside of the area designated as open space shall have additional minimum width or depth as required to provide an adequate building site and afford the minimum usable area required by the Unified Development Ordinance for front, rear, and side yards.
      (5)   Other. Reserved.
   (E)   Residential subdivisions; major.
      (1)   Access.
         (a)   All lots shall abut on a street.
         (b)   For the purposes of establishing lot lines, street right-of-way lines shall be considered as the front line of lots and tracts bordering such street.
         (c)   Lots shall not derive access exclusively from an arterial, major collector, or minor collector. Where driveway access from an arterial, major collector, or minor collector may be necessary for several adjoining lots, the PPC may require that such lots be served by a shared driveway in order to limit possible traffic hazards on such street. Because of their limited nature, shared driveways are not required to meet public roadway requirements.
         (d)   In order to provide extended flexibility in design, road frontage requirements may be reduced by up to 20% on up to 20% of all lots in a subdivision.
      (2)   Orientation and configuration.
         (a)   All residential subdivisions must depict an arrangement of residential lots so as to reduce, to the maximum extent feasible, any nuisance or conflict between residential and agricultural uses, both within the tract and in relation to adjoining and nearby tracts and to demonstrate compatibility of the proposed minor plat and existing agricultural uses.
         (b)   Side lines of lots shall be at approximately right angles to straight streets and on radial lines on curved streets. Some variation from this requirement is permissible, but pointed or very irregular lots should be avoided.
         (c)   Double frontage lots should not be platted, except that, where desired along interstates, arterials, major collectors, or minor collectors, lots may face on a local street and back on such thoroughfares. In that event a bufferyard of no less than Bufferyard D of the Unified Development Ordinance shall be provided along the back of each lot.
      (3)   Shape.
         (a)   The depth and width of any lot shall not exceed a 3:1 depth to width ratio.
         (b)   The lot size, width, depth, shape, grade location, and orientation shall be in proper relation to street and block design and to existing and proposed topographical conditions.
         (c)   Corner lots.
            1.   All corner lots shall be 25% larger in lot area and lot width than the minimum requirements for the applicable zoning district found in the Unified Development Ordinance.
            2.   Corner lots shall be sufficiently larger than interior lots to allow maintenance of building lines on both streets. A corner lot shall include a vision clearance space between three feet and 12 feet above the established grade at the street corner which is free from any kind of obstruction to vision. The vision clearance space shall occupy the triangular space at the street corner which is above a diagonal line connecting two points measured 15 feet equidistant from the street corner along each property line.
      (4)   Setbacks. Building lines shall conform to the provisions of the Unified Development Ordinance.
         (a)   Front setback.
            1.   Patterns. Irregular patterns of established front setbacks are encouraged. Additionally, front porches (allowed projections into the front setback) and variations in rooflines should be used to create the illusion of variations in established front setback.
         (b)   Lots abutting a watercourse, drainage way, channel, or stream, outside of the area designated as open space shall have additional minimum width or depth as required to provide an adequate building site and afford the minimum usable area required by the Unified Development Ordinance for front, rear, and side yards.
      (5)   Other. Reserved.