Homelessness has become increasingly pervasive on Long Island. In Suffolk County, the number of homeless people in families has increased 53 percent — from 1,439 in 2010 to 2,204 in 2013. The number of single adults is up 58 percent.

After more than 20 years as executive director of Long Island’s largest nonprofit providing emergency housing, I now understand perhaps the single greatest cause of homelessness. It is not …

Click here to continue reading Opinion: Land-use policies lead to LI homelessness