Harford County requires no general rental license, but Maryland does require registration. Every owner of a pre-1978 rental must register each unit with the Maryland Department of the Environment under Environment 6-811 and renew it, or lose the right to sue for rent.
Harford County runs no countywide rental-license or inspection program. What does apply is Maryland's lead law: the owner of any residential rental built before 1978 must register each affected unit with the Maryland Department of the Environment, pay the per-unit fee, and renew it on the state cycle. A new owner registers within 30 days of purchase, and registration ties the property to an MDE tracking number. Within Harford's towns, Havre de Grace licenses short-term rentals under its own code, but none of Bel Air, Aberdeen, or Havre de Grace requires a general long-term residential rental license. Failure to register the lead unit blocks a landlord from bringing an eviction or rent action.
An owner who does not register a pre-1978 rental with MDE cannot maintain an action for rent or eviction and faces penalties under the state lead law. Skipping renewal has the same effect until the registration is brought current.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Harford County, MD
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See how Harford County's rental registration rules stack up against other locations.
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