Canada must double its annual homebuilding to 417,000-469,000 units by 2036 to restore pre-pandemic housing affordability. Current construction is about 231,000 homes yearly, creating a shortfall of nearly 2.4 million homes over 10 years. High costs and weak condo sales slow development, risking a supply crunch when demand rises. Major cities show varied gaps, with some needing significant boosts in housing starts to meet demand.