; and (2) in addition to the units meeting the requirements of paragraph (1), not less than 5 percent of total dwelling units or one dwelling unit, whichever is greater, in each multifamily housing project shall be shall be accessible for persons with hearing or vision impairments. (b) Visitability requirement (1) Requirement It shall be unlawful for any person or entity, with respect to a covered dwelling unit designed, constructed, or commissioned, contracted, or otherwise arranged for construction, by the person or entity, to fail to ensure that the dwelling unit contains not less than 1 level that complies with the Standards for Type C (Visitable) Units of the American National Standards Institute (commonly known as ANSI) Standards for Accessible and Usable Buildings and Facilities (section 1005 of ICC ANSI A117.1–2009) or any successor standard. (2) Definitions As used in this subsection: (A) Covered dwelling unit The term covered dwelling unit means a dwelling unit that— (i) is— (I) a detached single-family house; (II) a townhouse or multi-level dwelling unit (whether detached or attached to other units or structures); or (III) a ground-floor unit in a building of not more than 3 dwelling units; (ii) is designed as, or intended for occupancy as, a residence; (iii) was designed, constructed, or commissioned, contracted, or otherwise arranged for construction, by any person or entity that, at any time before the design or construction, received or was guaranteed Federal financial assistance for any program or activity relating to the design, construction, or commissioning, contracting, or other arrangement for construction, of the dwelling unit