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(B) A lot that is not created by an urban lot split may have a two -unit project <br />under this section, plus any ADU or JADU that must be allowed under <br />state law and the city's ADU ordinance. <br />(2) Unit Size. <br />(A) The total floor area of each primary dwelling built that is developed under <br />this section must be: <br />(i) Less than or equal to eight hundred (800); and <br />(ii) More than five hundred (500) square feet. <br />(B) A primary dwelling that was legally established on the lot prior to the two - <br />unit project and that is larger than eight hundred (800) square feet is <br />limited to the lawful floor area at the time of the two -unit project. The unit <br />may not be expanded. <br />(C) A primary dwelling that was legally established prior to the two -unit <br />project and that is smaller than eight hundred (800) square feet may be <br />expanded to eight hundred (800) square feet after or as part of the two - <br />unit project. <br />(3) Height Restrictions. <br />(A) On a lot that is smaller than two thousand (2,000) square feet, no new <br />primary dwelling unit may exceed two (2) stories or twenty-two (22) feet <br />in height, measured from grade to peak of the structure. Any portion of a <br />new primary dwelling that exceeds one (1) story must be stepped back <br />by an additional five (5) feet from the ground floor; no balcony deck or <br />other portion of the second story may project into the stepback. <br />(B) No rooftop deck is permitted on any new or remodeled dwelling or <br />structure on a lot with a two -unit project. <br />(4) Demo Cap. The two -unit project may not involve the demolition of more than <br />twenty-five (25) percent of the existing exterior walls of an existing dwelling <br />unless the site has not been occupied by a tenant in the last three (3) years. <br />(5) Lot Coverage. The maximum building coverage of net lot area shall be thirty- <br />five (35) percent. If new structures are proposed to be one-story and be deed <br />restricted to be maintained as one-story structures in perpetuity, a fifty (50) <br />percent lot coverage is allowed. This lot coverage standard is only enforced <br />to the extent that it does not prevent two (2) primary dwelling units on the lot <br />at eight hundred (800) square feet each. <br />(6) Open Space. Private open space shall be provided for each unit at a minimum <br />of one hundred (100) square feet in the form of a private covered patio or <br />Ordinance No. NS-3038 <br />Page 46 of 54 <br />