How Ontario Handles Parking Rules: A Practical Guide

Ontario maintains 118 local ordinances across all categories, and 7 of those deal specifically with parking rules. Here is a breakdown of what the city actually requires, what is prohibited, and where Ontario falls on the strict-to-permissive spectrum compared to other cities.

EV Charging

Ontario permits residential Level 2 EV chargers under an expedited electrical permit, and California Green Building Code Part 11 requires new single-family homes to be pre-wired for a 40-amp 240-volt EV circuit.

Key details: Permit: Expedited electrical permit. New homes: 40-amp EV circuit required. Processing: 1-5 business days (AB 1236). HOA: Cannot prohibit (CC 4745).

Contact your local code enforcement office for specific penalty information.

The rules around ev charging in Ontario lean permissive, but that does not mean anything goes.

Abandoned Vehicles

Ontario removes abandoned vehicles under California Vehicle Code 22523 and OMC Chapter 10, allowing tow after a 72-hour notice on the windshield, with enforcement by Ontario Police Abandoned Vehicle Abatement.

Key details: Authority: CVC 22523 / OMC 10. Notice period: 72 hours. Report: (909) 986-6711 non-emergency. Lien sale: After 30 days unclaimed.

Contact your local code enforcement office for specific penalty information.

Overnight Parking

Ontario has no blanket overnight parking ban on ordinary passenger vehicles, but standard cars are still subject to the 72-hour limit (OMC Sec. 4-6.1011) and posted street-sweeping and time-restriction signs. Oversized vehicles and RVs may not be left on the street overnight without a 48-hour oversize-vehicle permit.

Key details: Blanket overnight car ban: None citywide. 72-hour limit: OMC Sec. 4-6.1011. Permit-parking zones: OMC Sec. 4-6.1305 (posted hours). RV/oversize overnight: Permit required (OMC Sec. 4-6.1020). Street sweeping: Posted no-parking hours enforced.

An ordinary vehicle left overnight is only in violation if it breaks the 72-hour rule, a posted time/permit restriction, or a street-sweeping no-parking window; those violations are citable and the 72-hour case is towable under CVC 22651(k). An RV or oversized vehicle left overnight without a displayed oversize permit is subject to citation and tow.

Street Parking Limits

On-street parking in Ontario is governed by Title 4, Chapter 6 of the Ontario Municipal Code together with the California Vehicle Code. Drivers must obey all posted signs and curb markings, observe a citywide 72-hour limit, and follow posted street-sweeping no-parking hours.

Key details: Max continuous parking: 72 hours (OMC Sec. 4-6.1011). Obey signs and markings: OMC Sec. 4-6.1003. Code chapter: OMC Title 4, Ch. 6 (Traffic). Street sweeping: Posted no-parking hours; citations issued. State tow authority: CA Vehicle Code 22651(k).

Posted-sign, curb-marking, and street-sweeping violations are parking infractions enforced by City Code Enforcement and Ontario PD; vehicles left more than 72 consecutive hours may be cited and towed under California Vehicle Code section 22651(k). Fines are set by the City's bail/penalty schedule and unpaid citations can result in a DMV registration hold.

RV & Boat Parking

Since July 1, 2023, Ontario requires a displayed permit to park an oversized vehicle (including most RVs, boats, and trailers) on any public street. Permits are limited to 48 hours, no more than two per calendar month, are not issued consecutively, and the vehicle must be parked in front of the owner's own residence.

Key details: Permit required since: July 1, 2023. Oversize threshold: Over 20 ft long, or over 80 in wide / 78 in high, or over 6,000 lb. Permit duration: 48 hours maximum. Permits per month: 2 (non-consecutive). Parking location: In front of the owner's own residence.

Parking an oversize vehicle on a public street without a displayed permit, or beyond the 48-hour permit window, is a parking violation subject to citation and tow. Storing an RV or boat on an unpaved or landscaped residential front yard violates OMC Sec. 4-13.03 and is enforced by Community Improvement (Code Enforcement). Permits are obtained through the Business License Division at 303 East B Street, Ontario, CA 91764, (909) 395-2022.

This is not one of those rules that cities tend to ignore. Ontario actively enforces its rv & boat parking requirements.

Driveway Rules

Ontario requires driveways to be paved with concrete, asphalt, or approved pavers and curb cuts over 20 feet wide need an encroachment permit from Public Works under OMC Title 6.

Key details: Surface: Concrete, asphalt, or pavers. Max width: 20 ft approach (typical). Curb cut permit: Public Works encroachment. Front-yard parking: Paved surface only.

Contact your local code enforcement office for specific penalty information.

Commercial Vehicle Restrictions

Ontario Municipal Code Sec. 4-13.04 prohibits parking or storing commercial vehicles over 10,000 lb GVWR (11,500 lb for pickups), and any motor truck, truck tractor, or trailer regardless of weight, on lots in residential zoning districts. Limited loading/unloading and on-site work exceptions apply for short durations.

Key details: Weight trigger: Over 10,000 lb GVWR (11,500 lb for pickups). Also covered: Any motor truck, truck tractor, or trailer regardless of weight. Where prohibited: Residentially zoned / used property. Loading exception: Up to 3 hours per 24-hour period. Code section: OMC Sec. 4-13.04.

Parking or storing a covered commercial vehicle on residential property in violation of Sec. 4-13.04 is a code violation enforced by the City's Community Improvement / Code Enforcement division and may result in notices of violation, administrative citations, and abatement. Commercial vehicles on public streets are also subject to the 72-hour rule and may be cited or towed.

This is one of the stricter rules in Ontario's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

The Bottom Line

Ontario is tougher than many cities when it comes to parking rules. Out of the 7 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Ontario, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

These rules come from Ontario's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.