While most states regulate both the housing and service components of assisted living in their assisted living licensure programs, some states use a different model.  A recent report by AARP examines the experiences of Connecticut, Minnesota, New Jersey, and North Carolina with assisted living in unlicensed housing.  Bernadette Wright, Assisted Living in Unlicensed Housing: The Regulatory Experience of Four States, #2007-08 (April 2007).