Toronto operates under the National Building Code of Canada 2020 with Ontario amendments. The City of Toronto Building Permit and Inspections Services manages approvals with typical timelines of 3-8 weeks. The city has a population of approximately 2.9 million and covers 632 square miles. Toronto is in Seismic Design Category D requiring enhanced seismic design. The city emphasizes heritage preservation, especially in historic neighborhoods. Notable requirements include cold climate design, snow/ice load considerations, heritage conservation compliance, and sustainable design. Permit fees range from 0.5-1.0% of construction value. The city offers expedited processing for sustainability-certified projects and downtown development.