Another Ontario-specific problem that the report identifies is, quite counterintuitively, the record levels of resale homes on the market. "The downturn in Ontario’s housing construction pipeline could have dire consequences for 2026 and beyond if not addressed," the analysis continues. "Any material drop in completions causing a slowdown in the housing stock’s expansion would make it that much harder to close the province’s housing supply gap. "Housing starts have been the strongest ever in Canada in the last four years, totalling more than one million units, and remain robust in much of the country this year. However, Ontario stands out with a steep decline since mid-2024, particularly in the GTA," the experts say.