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Multi-Dwelling Residential Zones

The R3 zone is a low density multi-dwelling zone. It allows approximately 14.5 dwelling units per acre. Density may be as high as 21 units per acre if amenity bonus provisions are used. Allowed housing is characterized by one and two story buildings and a relatively low building coverage. The major type of new development will be townhouses and small multi-dwelling residences. This development is compatible with low and medium density single-dwelling development. Generally, R3 zoning will be applied on large sites or groups of sites.
 
The R2 zone is a low density multi-dwelling zone. It allows approximately 21.8 dwelling units per acre. Density may be as high as 32 units per acre if amenity bonus provisions are used. Allowed housing is characterized by one to three story buildings, but at a slightly larger amount of building coverage than the R3 zone. The major types of new development will be duplexes, townhouses, rowhouses and garden apartments. These housing types are intended to be compatible with adjacent houses. Generally, R2 zoning will be applied near Major City Traffic Streets, Neighborhood Collector and District Collector streets, and local streets adjacent to commercial areas and transit streets.
 
The R1 zone is a medium density multi-dwelling zone. It allows approximately 43 units per acre. Density may be as high as 65 units per acre if amenity bonus provisions are used. Allowed housing is characterized by one to four story buildings and a higher percentage of building coverage than in the R2 zone. The major type of new housing development will be multi-dwelling structures (condominiums and apartments), duplexes, townhouses, and rowhouses. Generally, R1 zoning will be applied near Neighborhood Collector and District Collector streets, and local streets adjacent to commercial areas and transit streets.
 
The RH zone is a high density multi-dwelling zone. Density is not regulated by a maximum number of units per acre. Rather, the maximum size of buildings and intensity of use is regulated by floor area ratio (FAR) limits and other site development standards. Generally the density will range from 80 to 125 units per acre. Allowed housing is characterized by medium to high height and a relatively high percentage of building coverage. The major types of new housing development will be low, medium, and high-rise apartments and condominiums. Generally, RH zones will be well served by transit facilities or be near areas with supportive commercial services.
 
The RX zone is a high density multi-dwelling zone which allows the highest density of dwelling units of the residential zones. Density is not regulated by a maximum number of units per acre. Rather, the maximum size of buildings and intensity of use are regulated by floor area ratio (FAR) limits and other site development standards. Generally the density will be 100 or more units per acre. Allowed housing developments are characterized by a very high percentage of building coverage. The major types of new housing development will be medium and high rise apartments and condominiums, often with allowed retail, institutional, or other service oriented uses. Generally, RX zones will be located near the center of the city where transit is readily available and where commercial and employment opportunities are nearby. RX zones will usually be applied in combination with the Central City plan district.
 
The IR zone is a multi-use zone that provides for the establishment and growth of large institutional campuses as well as higher density residential development. The IR zone recognizes the valuable role of institutional uses in the community. However, these institutions are generally in residential areas where the level of public services is scaled to a less intense level of development. Institutional uses are often of a significantly different scale and character than the areas in which they are located. Intensity and density are regulated by the maximum number of dwelling units per acre and the maximum size of buildings permitted. Some commercial and light industrial uses are allowed, along with major event entertainment facilities and other uses associated with institutions. Residential development allowed includes all structure types. Mixed use projects including both residential development and institutions are allowed as well as single use projects that are entirely residential or institutional. IR zones will be located near one or more streets that are designated as District Collector streets, Transit Access Streets, or streets of higher classification. IR zones will be used to implement the Comprehensive Plan’s Institutional Campus designation. The IR zone will be applied only when it is accompanied by the “d” Design Review overlay zone.