Ontario caps single-family homes at 35 feet or 2 stories under OMC Chapter 9, and land near ONT International Airport triggers FAA Part 77 height review for anything over 200 feet or within the runway-protection zone.
Under Ontario Municipal Code Chapter 9 (Zoning), single-family residential districts (R-1, R-2) limit principal structures to 35 feet or two stories, whichever is less. Accessory structures are limited to 15 feet in most districts, with ADU height caps of 16 feet for detached and 25 feet for attached units under Government Code 65852.2. Commercial and industrial districts permit taller structures subject to floor-area ratios and setback step-backs. Because Ontario International Airport is inside the City limits, any structure proposed within the Part 77 surfaces or taller than 200 feet above ground level must file FAA Form 7460-1 with the Federal Aviation Administration and obtain a No Hazard determination. Airport Land Use Compatibility Plan (ALUCP) adopted by the San Bernardino County Airport Land Use Commission also restricts residential density and building heights in airport influence zones. Rooftop solar, HVAC, and parapets count toward height in Ontario unless explicitly exempted. Variances require Planning Commission review.
Contact your local code enforcement office for specific penalty information.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Ontario, CA
Ontario Municipal Code section 5-29.14 prohibits operating any motor vehicle in a condition that creates excessive, impulsive or intrusive noise, including e...
Ontario, CA
Outdoor music is regulated under OMC Title 5 Chapter 29 and the special-event permit process. Venues and events with amplified sound need a city permit; resi...
Ontario, CA
No Ontario-specific ordinance directly regulates aircraft noise; the City's noise chapter exempts activities preempted by state or federal law (OMC 5-29.06(h...
Ontario, CA
Ontario prohibits razor wire on any wall or fence citywide, and bans barbed wire and electrified fences in residential, commercial, and residential mixed-use...
Ontario, CA
Every wall, fence, and gate in Ontario is subject to Planning Director design review regardless of whether a building permit is needed. A building permit is ...
Ontario, CA
Ontario fence requirements include zoning-based heights, setbacks, sight triangles, buffer walls on industrial edges, and CBC structural standards. Pool, ret...
Side-by-side rule comparisons with other cities in San Bernardino County.
See how other cities in San Bernardino County handle structure height limits.
See how Ontario's structure height limits rules stack up against other locations.
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