SEC. 13.12. "NSO" NEIGHBORHOOD STABILIZATION OVERLAY DISTRICT. (Added by Ord. No. 180,219, Eff. 11/16/08.) A. Purpose. This section sets forth procedures, guidelines and standards for the establishment of “NSO” Neighborhood Stabilization Overlay Districts in areas of the City that are proximate to colleges and universities. The purpose of the NSO District is to protect and preserve the existing low density housing stock; to maintain and enhance the quality of life of area residents; to promote well-planned student housing; to establish regulations that address the negative impacts multi-habitable room projects cause; to address inadequate parking; to prevent irreversible damage associated with oversized multi-habitable room projects and to help stabilize neighborhoods. The purpose of the NSO District is also to ensure that future Projects are designed to be compatible with buildings that are adjacent or across the street. B. Establishment of the District. 1. Requirements. Each application for the establishment of a “NSO” Neighborhood Stabilization Overlay District shall follow the procedures set forth in Sec. 13B.1.4. (Zone Change) of Chapter 1A of this Code, except that each “NSO” Neighborhood Stabilization Overlay District shall include only properties in the R2, RD, R3, RAS, R4, R5, CR, C1, C1.5, C2, C4, C5 or CM zones. (Amended by Ord. No. 187,712, Eff. 1/23/23, Oper. 1/22/24; Ord. No. 187,930, Eff. 7/7/23.) 2. Radius. The radius of a “NSO” Neighborhood Stabilization Overlay District shall be at least one-quarter mile and no more than one mile from the physical boundaries of a college or university. The District shall not generally be less than one-quarter mile radius wide. 3. Boundaries. The boundaries shall be along street frontages and shall not split parcels. The precise boundary of a District may be adjusted for urban features such as topography, freeways or streets / highways. Precise boundaries are required at the time of application for or initiation of an individual District. The “NSO” Neighborhood Stabilization Overlay District shall include contiguous parcels of residentially and commercially zoned parcels, which may only be separated by public streets, ways or alleys or other physical features, or as set forth in the rules approved by the Director of Planning.