Roofing in Ontario
Ontario's Building Department Fees page prices plan check at 80% of the permit fee and adds an earthquake charge of 0.0001 times the job's valuation. Separate downloadable tables cover building, electrical, mechanical and plumbing permits, and you'll confirm the exact amount due at issuance with the permit technicians at 909-395-2023. Have the job's valuation ready. The city's building permit FAQ explains how to apply under its Plan Submittal Requirements. It defines an inspection as a city inspector's visit to verify the work against the approved plans and code.
The Census puts Ontario's median year built at 1980, with 40.7% of homes from 1950 through 1979 (2020-2024 estimates). On those older houses, ask what's under the shingles before accepting a price. Get that answer in writing. There's no hazard zone along the city line on CAL FIRE's state map. Its March 2025 local map, proposed by CAL FIRE for the city to adopt with or without changes, marks only non-wildland ground at the edge, so if a roofer cites a fire-zone rule, ask where it comes from.
Your application date sets the energy rules. A permit applied for from January 1, 2026 onward falls under the 2025 Energy Code, while earlier applications stay with the 2022 edition, and the 2025 state building standards took effect that day. Under the Energy Code a re-roof counts as an alteration. Once half the roof area or more is replaced, cool roof requirements apply. Ask the technicians which edition your application date puts you under.
What roofing costs near Ontario
There's no roofing quote from Ontario on file, so the page has no price for the city. The California page lists the estimates alongside what roofers are paid ($32.41 an hour in the BLS wage data, which is pay, not price). How we estimate costs.
Permits for roofing work in Ontario
Plenty of cities run their own building department, so start by asking the City of Ontario building department who issues roofing permits.
Your city or county building department decides whether a re-roof needs a permit, and CSLB says code requirements vary around the state, so ask the one for your address. California's Energy Code counts reroofing as an alteration, not a repair, which is worth mentioning when you ask what applies to your roof.