Is Mold in a Rental Unit the Landlord's Responsibility?

When mold appears in a rental unit, the responsibility usually falls on the landlord if the cause is a structural problem, a leaking pipe, or a faulty appliance. The landlord is expected to fix the source of the moisture and remove the mold so the unit is safe to live in. You can help by reporting the issue as soon as you notice it, in writing, and by taking photos of the affected areas.

The landlord's duty often depends on the lease agreement and local housing codes. Some leases spell out who handles mold, but most standard leases put the repair burden on the property owner. If the mold comes from something you caused, such as a window left open in heavy rain or a bathroom fan never turned on, the situation can change. Keep records of your own actions to show you did not cause the problem.

• Report mold in writing to the landlord
• Take clear photos of the mold and any water stains
• Keep copies of all emails or letters you send
• Note the date you first noticed the mold
• Check your lease for mold clauses
• Ask for the moisture source to be fixed, not just painted over

Your first step is to tell the landlord about the mold in writing. An email is fine, but keep a copy. Describe where the mold is, how large the area is, and whether you see any water stains or dampness nearby. This gives you a record of the report date. You do not need to clean the mold yourself, especially if it covers a large area or you have breathing problems.

While you wait for a response, limit moisture in the unit. Run the bathroom fan, use a dehumidifier if you have one, and wipe up condensation on windows. Do not block vents or heaters, since that can make the problem worse. If the mold is near an active leak, you can place a bucket to catch drips, but the landlord should fix the source.

If the landlord ignores your written report, you have a few options. You can contact your local housing authority or code enforcement office and ask them to inspect the unit. They can cite the landlord for unsafe conditions. You can also check your lease and local tenant laws to see what rights you have, such as withholding rent in certain situations, but that step is serious and should not be taken without understanding the rules.

Policies vary, and your insurer decides what is covered. For cleanup, the pros who handle apartment water damage can remove moldy drywall and treat the area. If you live in Arlington, keep a written record of every communication with the landlord. That record helps if you need to involve a housing agency or if the landlord later claims you caused the problem.