Ontario, CA Parking Rules: RV & Boat Parking (2026)

Ontario's oversized-vehicle program was adopted by Ordinance 3231 (and amended by Ordinance 3261), codified at Ontario Municipal Code Sec. 1020. The City defines an oversize vehicle for its street-permit program as 'any vehicle, motorized or non-motorized, that exceeds 20 feet in length, or exceeds 80 inches in width or 78 inches in height or that weighs more than 6,000 pounds (gross vehicle weight),' which captures most recreational vehicles, travel trailers, boats on trailers, and large campers. Beginning July 1, 2023, such a vehicle may not be parked on a public street without displaying a valid temporary oversize-vehicle parking permit.

Each permit is good for no more than a 48-hour parking period, no more than two permits may be issued per calendar month, permits are not issued on consecutive days, and the oversize vehicle 'must be parked in front of the residence it belongs to' and cannot create a public-safety hazard. Separately, the Off-Street Parking chapter (Sec. 03) prohibits storing motor homes, campers, boats, or similar equipment on unpaved or landscaped front/street-side yard areas of residential lots.