Canada’s housing and homelessness crisis touches nearly every Canadian. Over the past decade, while federal housing spending has increased, affordability has worsened for all but the wealthiest, and homelessness is surging. Despite recent declines in housing prices and rents, unsheltered homelessness is still up 300% since 2018, according to the most recent national point-in-time count. The country has a narrow but historic window to tackle this crisis and rebuild our housing system so it delivers at the speed, scale and affordability this moment demands. …Federal action alone won’t get us there. Provinces and territories control the planning systems, development-charge frameworks, zoning rules, supportive housing, health services and income supports. …That is why we need a Canada Housing Accord. [Tim Richter is the chief executive of the Canadian Alliance to End Homelessness and Tyler Meredith is a senior fellow at the Munk School of Global Affairs and Public Policy]