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various government agencies for their specific sites, and therefore are not <br /> coded by this Article. The landscape style is urban, emphasizing shading street <br /> trees in sidewalk tree wells, and in landscaped public plazas. <br /> (3) Downtown (DT) Zone. <br /> This zone is applied to the historical shopping district of Santa Ana, a vital, <br /> pedestrian-oriented area that is defined by multi-story urban building types (flex <br /> blocks, live-work, stacked dwellings, and courtyard housing in the Downtown <br /> edges) accommodating a mixture of retail, office, light service, and residential <br /> uses. The standards of this zone are intended to reinforce the form and <br /> character represented by pre-World War II buildings and recognized as a <br /> National Historic District, through restoration, rehabilitation, and context- <br /> sensitive infill. The standards also facilitate the replacement or improvement of <br /> post-war development that eliminated the pedestrian orientation of various <br /> downtown blocks (for example, parking structures with no features of <br /> pedestrian interest along their entire lengths). The landscape style is urban, <br /> emphasizing shading and accent street trees in sidewalk tree wells. Parking is <br /> accommodated on-street and may also be in structures with liner buildings, <br /> underground, and within block centers in surface lots not visible from streets. <br /> (4) Urban Center (UC) Zone. <br /> This zone is applied to the area surrounding the Downtown, which serves as a <br /> transitional area to the surrounding lower intensity neighborhoods and to other <br /> areas where mixed-use and multi-unit residential buildings create a pedestrian- <br /> oriented urban fabric. The zone provides for a variety of non-residential uses <br /> and a mix of housing types at medium intensities and densities. Besides <br /> accommodating community serving businesses, this zone may also serve the <br /> daily convenience shopping and service needs of nearby residents. Building <br /> types include mixed-use Flex Blocks, stacked flats, live-work, row- houses, and <br /> courtyard housing. The landscape is urban, emphasizing shading street trees <br /> in sidewalk tree wells. Parking is accommodated on-street and may also be in <br /> structures with liner buildings and underground in areas adjacent to the DT <br /> zone, and in surface lots away from street frontages. <br /> (5) Corridor (CDR) Zone. <br /> This zone is applied to properties fronting existing commercial corridors and <br /> provides standards to improve pedestrian-orientation in a transit-supportive, <br /> mixed-use area. Mixed-use flex block and live-work building types are at or <br /> near the sidewalk, and accommodate street level retail, service, and office <br /> uses, with office and residential above. The landscape style is urban, <br /> emphasizing shading street trees in sidewalk tree wells. Parking is <br /> accommodated on-street, and in screened surface lots between buildings, or <br /> away from streets, with no more than half the site frontage occupied by parking. <br /> (6) Urban Neighborhood 2 (UN-2) Zone. <br /> This zone is applied to primarily residential areas intended to accommodate a <br /> variety of housing types, with some opportunities for live-work, neighborhood- <br /> serving retail, and cafes. Appropriate building types include single dwellings, <br /> duplexes, triplexes and quadplexes, courtyard housing, rowhouses, and live- <br /> Ordinance No. NS-3081 <br /> Page 15 of 49 <br />