A. Purpose Statement: The purpose of the D-4 Secondary Central Business District is to foster an environment consistent with the area's function as a housing, entertainment, cultural, convention, business, and retail section of the city that supports the Central Business District. Development is intended to support the regional venues in the district, such as the Salt Palace Convention Center, and to be less intense than in the Central Business District. This district is appropriate in areas where supported by applicable master plans. The standards are intended to achieve established objectives for urban and historic design, pedestrian amenities, and land use control, particularly in relation to retail commercial uses.
B. Uses: Uses in the D-4 Secondary Central Business District as specified in Section 21A.33.050, "Table of Permitted and Conditional Uses for Downtown Districts", of this title, are permitted subject to the general provisions set forth in Section 21A.30.010 of this chapter. In addition, all conditional uses in the D-4 District shall be subject to design evaluation and approval by the planning commission.
C. Minimum Lot Size: No minimum lot area or lot width is required.
D. Yard Requirements:
1. Front and Corner Side Yards: No minimum yards are required. If a front or corner side yard is provided, the maximum setback shall be eight feet, except for plazas and other similar spaces.
a. If a yard is provided, the yard is required to have at least one of the following elements:
(1) Seating at a ratio of at least one bench for every five hundred (500) square feet of yard space;
(2) Landscaping that includes an increase of at least twenty five percent (25%) in the total number of trees required to be planted on the site; or
(3) Awning or a similar form of weather protection that covers at least five feet (5') in width and length from all street-facing building entrances.
b. Exceptions to this requirement may be authorized through the design review process, subject to the requirements of Chapter 21A.59 of this title.
c. The planning director, in consultation with the transportation director, may modify this requirement to accommodate a wider sidewalk if the adjacent public sidewalk is less than fifteen feet (15') wide and the resulting modification to the setback results in a more efficient public sidewalk. The planning director may waive this requirement for any addition, expansions, or intensification, which increases the floor area or parking requirement by less than fifty percent (50%) if the planning director finds the following:
(1) The architecture of the addition is compatible with the architecture of the original structure or the surrounding architecture, or
(2) The addition reduces the extent of the noncompliance of the existing building.
d. Regardless of the setback provided, doors shall be setback a minimum distance to allow the door to operate without swinging into a right of way or midblock walkway.
2. Interior Side Yards: No minimum side yard is required except a minimum of ten feet (10') is required when the side yard is adjacent abutting to a zoning district with a maximum permitted height of thirty five feet (35') or less.
3. Rear Yard: No minimum rear yard is required except a minimum of ten feet (10') is required when the rear yard is abutting to a zoning district with a maximum permitted height of thirty five feet (35') or less.
E. Building Height: Buildings in the D-4 zoning district shall comply with the following provisions:
1. The permitted building height shall not exceed 600 feet.
2. Buildings taller than 200 feet and up to 600 feet shall only be authorized through the design review process, subject to the requirements of Chapter 21A.59 of this title and the following regulations.
a. Shall include a minimum stepback of five feet (5') or other architectural feature that can deflect snow and ice from falling directly onto a sidewalk, midblock walkway, or other public space. The stepback may be located above the first floor and below one hundred twenty feet (120') in height above the sidewalk or public space. Buildings with less than fifty percent (50%) of the total façade surface cladded in glass are exempt from this requirement;
b. The building includes at least one of the following options:
(1) Midblock walkway is provided on the property. The midblock walkway connects to an existing or planned street, midblock walkway, or publicly accessible public space and exceeds all the required dimensions of Section 21A.30.010.G by at least five feet;
(2) The building is utilizing affordable housing incentives identified in chapter 21A.52 of this title;
(3) The building exceeds the minimum requirement for ground floor uses identified in 21A.37.050.A.1 (Design Standards Defined, Ground Floor Use Only), the requirement must be increased to one hundred percent (100%). This option requires that the entire ground floor use of a building consists of retail good establishments, retail service establishments or restaurants, public service portions of businesses, department stores, art galleries, motion picture theaters, performing art facilities or similar uses that encourages walk-in traffic through an active use. Vehicle entry and exit ways, necessary for access to parking and loading and unloading areas required by this title are exempt from this requirement provided these areas do not exceed 20% of the length of a building façade that faces a public street or public space;
(4) The applicant provides a restrictive covenant on a historic building, a building that is fifty (50) years or older, or a building that is a nationally recognized property, located outside of the H Historic Preservation Overlay District for the purpose of preserving the structure for a minimum of fifty (50) years; or
(5) The proposal includes a privately owned, publicly accessible open space on the property or on another property within the geographic boundaries of the Downtown Plan. To qualify for this provision, a restrictive covenant in the favor of the city shall be recorded against the open space portion of the property. The space shall be a minimum of five hundred (500) square feet and include enough trees to provide a shade canopy that covers at least sixty percent (60%) of the open space area.
c. Exception: The first fifty feet (50') of height shall not be set back more than five feet (5') from the front property line, unless approved through the design review process or when otherwise allowed by this code. (Ord. 63-24, 2024: Ord. 10-24, 2024: Ord. 24B-23, 2023: Ord. 24-23, 2023: Ord. 67-22, 2022: Ord. 14-19, 2019: Ord. 75-18, 2018: Ord. 12-17, 2017)