Inspect smoke and CO alarms and replace expired 10-year units. Maryland makes the landlord responsible for installing, maintaining, and replacing smoke alarms, which must be replaced 10 years after their manufacture date or when they fail (battery-only units must be sealed, tamper-resistant long-life alarms with a hush button), requires carbon monoxide alarms outside each sleeping area and on every level of every rental unit, and gives landlords 5 calendar days to repair or replace a smoke alarm after a tenant's written notice, so a yearly check catches expired or missing alarms before they become violations.
The Maryland rule
Each rule shows its schedule, its primary sources, and the date it was last verified.
Related rules in Maryland
The Maryland guide lists every compliance obligation, the seasonal maintenance calendar, and baseline upkeep.
Open the Maryland landlord guide · Smoke and carbon monoxide detector duties in every state
What Landautomate does with this page
This guide is the reading version of the Landautomate Maryland rule base. In the app, the same rules become dated tasks on each Maryland property, timed to its purchase date, lease dates, age, and climate, with an email before each one is due. The free preview shows a sample of that schedule for Maryland in under a minute, no account needed.
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