The Riverdale Planning Commission gave preliminary approval to Brent Crandall for the construction of a 20,000-square-foot assisted care facility, Aunt Nancy’s Assisted Living. Fifty-one units will be built in the first phase of the development and will include cooking, cleaning and laundry facilities for staff that will provide these services. The units will be one bedroom, studio style. The development, located at 1580 W. Ritter Drive in Riverdale, will also include a community dining room, a reception area, a lobby and a courtyard.