20C.30.100 Zero Lot Line Development.

20C.30.100-010 Purpose.

The purpose of zero lot line development as described in this section is to: (1) provide more usable private open space; (2) promote the efficient use of land; and (3) protect environmentally sensitive areas. Zero lot line homes provide for greater usable yard space on each lot and allow for the more efficient subdivision of land. Because the location of each structure is defined before subdivision approval, greater flexibility in site development standards is possible while at the same time assuring that the single-family character of the development is maintained. (Ord. 1901)

20C.30.100-020 Requirements.

All zero lot line developments shall comply with the standards and requirements of RCDG 20C.30.25, Site Requirements for residential zones, as well as other related policies and regulations of the Community Development Guide. In the event that any of the zero lot line requirements described below conflict with other standards of the Community Development Guide, the requirements for zero lot line development shall apply.

(1)    Building Setbacks.

(a)    For zero lot line development, a dwelling unit may be placed on one interior side property line, giving it one zero side/interior setback. If it is an interior lot line, the setback standard from the other side property line shall be 10 feet, except in the RA-5 zone where the other side setback shall be 30 feet and the R-1 zone where 20 feet shall be the opposite side setback.

(b)    One building side/interior setback may also be reduced so long as the opposite side/interior or side street setback on the lot is increased by an amount corresponding to the original side setback reduction.

(c)    These side/interior setback reductions shall not apply to side setbacks adjacent to lots that are not part of the zero lot line development.

(d)    Accessory buildings and structures shall conform to the setbacks set or required for the primary dwelling unit.

(2)    Privacy. In order to maintain privacy, no windows, doors, air conditioning units, or any other types of openings in the walls along a zero lot line shall be allowed except where such openings do not allow for visibility into the side yard of the adjacent lot, such as a clerestory skylight or opaque window.

(3)    Eaves. Eaves along a zero lot line may project a maximum of 18 inches over the adjacent property line.

(4)    Maintenance and Drainage Easements. A perpetual easement related to maintenance, eaves, and drainage of at least five feet shall be provided on the lot adjacent to the zero lot line property line which, with the exception of walls and/or fences, shall be kept clear of structures. This easement shall be shown on the face of the plat map and incorporated into each deed transferring title on the property. The building wall along the zero lot line shall be maintained in its original color and treatment unless otherwise agreed to in writing by the two affected lot owners.

(5)    Platting Requirements. The final plat or short plat shall show the approximate location of buildings proposed to be placed within the required setbacks. (Ord. 1901)