Maryland's New Mold Law Puts It on Track to Become the Seventh Licensing State

Maryland doesn't license mold contractors — today. But the Tenant Mold Protection Act, effective July 1, 2025, is the most substantial mold-law development we found in our 51-jurisdiction sweep, and it points somewhere specific.

What the law requires now

A Maryland landlord who receives written notice of mold must conduct an assessment within 15 days and remediate within 45 days of that assessment. Tenants must receive mold-information disclosure at lease signing, on the lead-paint model. The statute even enumerates nine specific mold genera by name.

The part that matters for the future

The act directs the Maryland Department of the Environment to adopt uniform statewide standards for mold assessment and remediation by June 1, 2027. States that write assessment-and-remediation standards are one short step from licensing the people who perform them. We think Maryland is the most likely seventh U.S. mold-licensing jurisdiction — and we'll update the moment those standards publish.