Baltimore County, MD Parking Rules: Overnight Parking (2026)

1 governs how long a commercial vehicle may sit parked on a residential lot, which in practice sets the county's limit on leaving a work truck overnight in a driveway or yard. Under subsection A, any commercial vehicle exceeding 10,000 pounds gross vehicle weight or gross combination weight may not be parked on a residential lot for any period beyond the time essential to its immediate use, meaning it cannot simply be left there overnight or long-term. Subsection B carves out one exception: a single commercial vehicle per dwelling unit, capped at 10,000 pounds gross weight or combination weight, may be parked for longer than immediate use if the owner or operator actually resides on the lot and the vehicle is either kept inside a fully enclosed structure like a garage, or, if left outdoors, meets three conditions at once, no materials, products, freight, or equipment may be visible on it, it may display no advertising other than lettering or designs on the driver's or front passenger's door, and it must be parked in a side or rear yard rather than the front.

2 further limits where any vehicle may sit on a residential lot east of Charles Street, south and west of I-695: it must rest on a paved or otherwise durable, dustless surface built for vehicle parking.