Building Permits in Ontario, OR
Check permit requirements for home improvement projects in Ontario. Select a project type below to see local requirements, estimated fees, and how to apply.
Key Exemptions in Ontario
These projects typically don't require a building permit in Ontario:
Concrete sidewalks, slabs, platforms, driveways, and similar at-grade flatwork are exempt from a building permit under 2021 ORSC R105.2 item 2. A permit may still be required if the slab is a foundation for a regulated structure.
Decks and porches where the floor is not more than 30 inches above adjacent grade (measured within 3 feet horizontally) are exempt from a building permit under 2021 ORSC R105.2 item 12. Covered porches must also stay at least 3 feet from lot lines to remain exempt.
Residential concrete or asphalt driveways are exempt from a building permit under 2021 ORSC R105.2 item 2 (concrete sidewalks, slabs, platforms, driveways and similar work). However, a new curb cut or a driveway approach from a city street requires a Public Works/right-of-way encroachment permit from the City of Ontario.
Fences 7 feet or less in height constructed of wood, wire mesh, or chain link do not require a building permit (2021 ORSC R101.2.2 item 1). This statewide Oregon exemption applies unless the fence serves as a swimming pool barrier. Check Ontario zoning for setbacks and sight-triangle rules.
Portable heating, cooling, or ventilation appliances (window AC units, portable heaters, portable evaporative coolers) are exempt from a mechanical permit under 2021 ORSC R105.2 Mechanical items 1-3 and 6.
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Permit Guides
Read our in-depth guides for common home improvement projects: