First of all, I believe that we should stop talking about the aging population in terms of something we need to prepare for. The shift has already begun. Canadian society is aging, and it has been for some time now.
In my career, I worked in HR at the federal government. That was 25 years ago, and we were already looking into the phenomenon back then. Today, we talk about it as if it were something new, but this is not a problem for future generations; it is already here.
With regards to housing, there is a lot of available information. I suggest you take a look at the National Seniors Council's website. If I remember correctly, there was a study done about seven or eight years ago on affordable housing.