Conditional uses: flats, multiple-family dwellings, care facilities, rooming and boardinghouses, temporary homeless shelters, clubs and lodges, community centers, places of worship, colleges and universities, schools (pre-K and K through twelve), trade and vocational schools, tutoring and instruction, parks, utility services, wireless communications facilities, bars, drive-in restaurants, indoor commercial recreation, outdoor commercial recreation, parking lots and structures, hospitals, medical clinics, mortuaries, animal hospitals, pet daycare, retail uses totalling greater than ten thousand square feet of gross floor area, supermarkets, automotive repair and painting, automobile sales and service, carwashes, fuel and service stations, commercial lodging, gun shops, liquor stores, pawn shops, smoke shops, drive-through facilities, and outdoor display of merchandise. Also conditional is any change in use where available on-site parking would be less than fifty percent of required parking. In multitenant buildings, required parking shall be the total required for all the tenants; for purposes of calculating total required parking, retail use shall be assumed where there is any vacancy in the building.