Harford County, MD Building Safety: Door Locking Hardware (2026)

The Minimum Livability Code's exterior structure standards, at § 162-10C, cover the physical envelope of a rental building, and paragraph (15), Door hardware, is the specific rule on locks: each exterior door and its hardware shall be maintained in good condition, and door locks on all interior and exterior doors entering housing units shall be in good repair and capable of tightly securing the door. That standard sits alongside § 162-10C(11) and (12), which require every window, door and frame to exclude rain, rodents and wind and to fit reasonably and weathertight in its frame, and § 162-10D(7), which requires every exit door to be capable of being opened easily from the inside so hardware that locks tenants in is not compliant.

On the fire-safety side, § 162-14B(3) separately requires all doors in the required means of egress to be easily opened from the inner side, and § 162-14F requires fire-resistance-rated doors and their hardware, including doorstops and hold-open devices, to be maintained in good working order using only approved door hardware. Together these sections put the maintenance burden for functioning, secure locks on the property owner as part of the structure's upkeep, while making sure a security lock never defeats the ability of an occupant to exit quickly in an emergency.

The Department of Inspections, Licenses and Permits Code Official enforces these standards through the same inspection and notice-of-violation process used for the rest of the Livability Code.