Can you please describe the array of housing options available to the older adult population; including CCRCs, skilled nursing facilities, active adult communities, shared housing, residential care facilities, and assisted living/residential care apartments.
Since this is not my area of expertise, I searched Google under the key words "elderly housing options" to get these possible sources:
http://www.google.com/search?client=safari&rls=en&q=elderly+housing+options&ie=UTF-8&oe=UTF-8
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.