Roof Replacement Permit Requirements in Ontario, CA
Ontario is a city of 175,265 residents in California that follows the 2022 CBC building code. Whether you need a building permit for your Roof Replacement project depends on the scope of work — here's what Ontario's building department requires.
When you DON'T need a permit
Minor roof repairs (patching, replacing a few shingles) typically do not require a permit.
Source: City of Ontario Municipal Code / CBC Title 24
Minor roof repairs (patching, replacing a few shingles) typically do not require a permit.
Source: City of Ontario Municipal Code / CBC Title 24
When you DO need a permit
Re-roofing requires a building permit.
Estimated fee: $90 – $360
Typical timeline: About 1 week
Source: City of Ontario Municipal Code / CBC Title 24
Structural roof changes (dormers, pitch changes, skylights) require a building permit with engineered plans.
Estimated fee: $225 – $900
Typical timeline: About 2 weeks
Source: City of Ontario Municipal Code / CBC Title 24
Structural roof changes (dormers, pitch changes, skylights) require a building permit with engineered plans.
Estimated fee: $225 – $900
Typical timeline: About 2 weeks
Source: City of Ontario Municipal Code / CBC Title 24
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Frequently Asked Questions
Estimated permit fees for Roof Replacement projects in Ontario, CA range from $90 – $360. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Roof Replacement projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Ontario can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Roof Replacement permits in Ontario is About 1 week. More complex projects may take longer if plan review is required.
Learn More About Roof Replacement Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Roof Replacement Guide →