(a) Purpose and application. Many of the city’s commercial zoning districts allow the inclusion of residential uses. This section establishes standards for residential uses within the B-4, C-2, C-3, C-4 and C-5 Commercial Zoning Districts.
(b) Nonresidential uses required. While the B-4, C-2, C-3, C-4 and C-5 Zoning Districts allow residential uses when they do not stand alone, a primary purpose of these zoning districts is to provide convenient community access to commercial goods and services. To ensure that nonresidential uses are included within these commercial zoning districts, development sites must include nonresidential floor area as follows:
Zoning District | Minimum Required Nonresidential Floor Area |
B-4 | Floor area ratio - 0.10 |
C-2 | Floor area ratio - 0.20 |
C-3 | Floor area ratio - 0.25 |
C-4 | Floor area ratio - 0.20 |
C-5 | Floor area ratio - 0.25 |
(c) Density.
(1) Maximum density. Maximum residential density in commercial zoning districts is controlled through the maximum floor area ratio for the respective zoning district.
(d) Integration. In commercial zoning districts, residential uses may be integrated with nonresidential uses in either a vertical or horizontal configuration. On development sites where residential buildings are separated from nonresidential buildings, the primary public entrances of residential and nonresidential buildings must be linked with one another through direct pedestrian connections.
(e) Site and building design.
(1) Building setbacks. Residential buildings are subject to the setback requirements of the underlying zoning district.
(2) Maximum impervious surface coverage. On sites that contain residential uses vertically integrated with nonresidential uses, the maximum impervious surface coverage is 85%. On sites that contain residential uses horizontally integrated with nonresidential uses, the maximum impervious surface coverage for the portion of the site containing residential uses is 85%. The maximum impervious surface coverage for portions of development sites not containing residential uses is regulated by the underlying zoning district. When horizontally integrated, the residential portion of a site is that portion occupied by residential structures as well as associated parking, driveway, setback and open space areas.
(3) Land use conflicts. Sites must be designed to minimize the impact of nonresidential uses on residential uses through screening, separation, design or alternative techniques. Features that may create impacts and need to be addressed include, but are not limited to, headlights, lighted signs, loading areas, delivery areas, trash pick-up areas, drive throughs, menu boards and high traffic access drives.
(4) Odor suppression. The nuisance impacts of uses that generate odors are magnified by proximity to residential uses. Therefore, the issuing authority may require through condition of approval odor generating uses, including, but not limited to, restaurants, on sites containing residential uses to install and utilize odor suppression systems.
(5) Air conditioners. Air conditioners protruding from an exterior wall must be architecturally treated and designed to appear as an integral part of a wall.
(6) Storage space. A fully enclosed, lockable storage space, located outside the unit (excluding accessibility and senior citizen housing), must be provided for each dwelling unit.
(A) No dedicated bicycle storage. If the storage space is used to meet the long-term bicycle parking requirements of § 21.301.06, the storage space must have a minimum of a four foot horizontal dimension and a minimum of a four foot vertical dimension and be at least 175 cubic feet.
(B) Dedicated bicycle storage. If long-term bicycle parking requirements of § 21.301.06 are being met outside of the storage space, the storage space must have a minimum of a three foot horizontal dimension and a minimum of a four foot vertical dimension and be at least 96 cubic feet.
(C) Accessibility and senior citizen housing. A designated storage space of at least 96 cubic feet, with minimum dimensions at least four feet high, four feet wide and four feet deep must be located within each dwelling unit.