2026-05-10PermitComp Editorial
Understanding Ontario Building Code Permits: A Guide for Architects
OBCpermitscompliance
Ontario's building permit system is layered with provincial codes, municipal bylaws, and statutory timelines that can catch even experienced architects off guard. The Ontario Building Code (OBC) sets the baseline, but every municipality adds its own zoning bylaws, tree protection rules, and heritage overlays.
Common Pitfalls
- SB-10 Energy Compliance: Missing the energy summary is the #1 reason for incomplete applications in the GTA.
- Accessibility (OBC 3.8 / 9.35): Renovations that change floor area must include updated accessibility plans.
- Site Plan Control: Triggered by lot coverage thresholds that vary by municipality.
How PermitComp Helps
PermitComp pre-files your drawings against both the OBC and the target municipality's zoning bylaw before submission. Our system flags missing cut sheets, incorrect setbacks, and energy compliance gaps so you submit once—not twice.