In addition to the standards within § 155.422, the following standards shall apply to zero lot line home development.
(A) Traffic ways setback. Notwithstanding any of the setback requirements identified above, there shall always be a building setback of 25 feet from all arterial roadways of 100 feet in width as shown on the County Traffic Plan.
(B) Openings prohibited on the zero lot line side. The wall of the dwelling located on the lot line shall have no windows, doors, air conditioning units, or any other type of openings with the exception of a condensate line. Atria or courts shall be permitted on the zero lot line side when the court or atrium is enclosed by three walls of the dwelling unit, and a solid wall of at least eight feet in height is provided on the zero lot line. The wall shall be constructed of the same material as exterior walls of the unit, or may be constructed of decorative opaque glass block. A fixed non- operable opaque glass window may be used in lieu of glass block to meet the intent of this section.
(C) Maintenance and drainage easements.
(1) Lots developed utilizing the R-1Z criteria shall have a perpetual, seven-foot easement for maintenance of the wall on the lot adjacent to the zero lot line property line which, with the exception of the following shall be kept clear of structures.
(a) Walls or fences;
(b) Structures at grade, not to encroach greater than two feet into the seven-foot easement.
(2) Lots developed utilizing the R-1Z criteria may have overhangs that encroach into the easement on the adjacent lot a maximum of 24 inches, but the roof shall be so designed that water runoff from the dwelling places in the lot line is limited to the easement area.
(3) At grade structures encroaching into the five foot required setback on the zero lot line side shall place a six foot high completely opaque privacy wall in accordance with § 155.621(A)(2).
(D) Parking. All visitor parking must be paved and evenly distributed throughout the development.
(E) Common open space. For the purpose of this section, common open space shall be defined as recreational facilities including, but not limited to, swimming pools, clubhouses, bicycle/pedestrian paths, and open recreational areas for the common use of the owners or residents of the dwelling units. Common open space is not required but may be permitted. If common open space is provided, provisions satisfactory to the Planning and Zoning Board shall be made to assure that non-public areas and facilities for the common use of occupants of zero lot line developments shall be maintained in a satisfactory manner without expense to the general taxpayer of the city. These may be provided by the incorporation of an automatic membership homeowners association, or condominium for the purpose of continually holding title to the non-public areas and facilities and levying assessments against each unit for the purpose of paying the taxes and maintaining the common open space.
(F) Sidewalks. Continuous sidewalks shall be provided on both sides of a public or private street and roads within a development in accordance with § 154.32(S).
(G) Elevations. There shall be no more than three consecutive identical dwelling unit elevations.
(H) Garages. All residential units shall contain a minimum of a single-car garage fully enclosed, and units with three or more bedrooms shall contain a minimum of a two-car garage fully enclosed.
(I) Rear yards and side yards. Where a rear yard is adjacent to another home's side yard, only single-story homes shall be permitted on both lots, provided however, subject to the building height restrictions of this section and upon application to the Planning and Zoning Board, a developer may request approval to erect two-story homes on either one or both of the lots. The Board shall consider the character and use of adjoining dwelling units or structures as well as compatibility and may require additional amenities to be provided in determining whether to approve the request. (Ord. 2021-02, adopted 3-17-21; sought to be reconsidered, Commission passed 4-21- 2021; Am. Ord. 2022, passed 6-18-24)