Ontario Construction Approval Timelines — Rezoning, Site Plan & Permit Duration by City
How long does rezoning take in Ontario? How long is site plan approval? Cerosk tracks real approval durations — median rezoning timeline, site plan approval duration, and building permit timelines — based on historical municipal data across Toronto, York Region, and Hamilton.
Stage Timing by City
Select a city to see median approval durations by stage and sector.
Why Approval Timelines Matter for Suppliers
Ontario construction approval timelines determine when the specification window opens for each project. A project currently in the Land Use / Rezoning stage has a median 12–24 months before it reaches Site Plan Approval — the stage when architects are actively writing product specifications. Knowing the typical rezoning timeline for a city lets you plan your outreach before competitors do.
Cerosk's stage timing data is derived from real project histories — not industry estimates. Learn more: How Long Does a Development Application Take in Ontario? · What Is a Zoning By-law Amendment? · OLT Appeals and Construction Timelines