Are you familiar with Housing First? To quote: ‘Housing First’ is an approach to ending homelessness that centers on quickly providing homeless people with housing and then providing additional services as needed. http://www.homelesshub.ca/topi...using-first-209.aspx
The Mental Health Commission of Canada has been running a research project around thins: At Home/Chez Soi. Check out: http://www.mentalhealthcommiss...es-and-projects/home
The results so far are remarkable. 70% of HF participants are in housing after the first year, as opposed to 30% in treatment-as-usual. We're saving 54 cents on every dollar spent on health and justice system usage. And more. (At Home Early Findings Report - Volume 3 - September 2012 http://www.mentalhealthcommiss.../5029?terminitial=23)
The best part is that the federal government committed a lot of money in the last budget to support this approach.
There's some good happening in the world