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What Should Tenants Know About Mold in a Rental Property?

Last updated October 25, 2026

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The short answer

Report Mold Right Away

When you spot mold, tell your landlord or property manager in writing as soon as you can. Email or a written note works well because it creates a record. Describe where the mold is, how large the area looks, and any musty smell. Take photos from a few angles and keep copies for yourself.

The longer mold sits, the more it can spread into walls, carpet, or furniture. In a humid climate like Detroit's, moisture can linger and make growth worse. Your landlord may already know about the issue, but a clear report helps you show you did your part. If the problem is small, you might clean it yourself, but larger areas need professional help.

  • Write down the date and time you reported the mold.
  • Keep all emails and letters about the issue.
  • Photograph the mold and any water stains nearby.
  • Note any health symptoms you or your family feel.
  • Check your lease for mold or maintenance clauses.

Know Your Landlord's Duty

In most places, landlords must keep rental units habitable, which means fixing leaks, controlling moisture, and dealing with mold that threatens health. If the mold comes from a plumbing leak, roof damage, or poor ventilation, the landlord typically has to repair the source and remove the mold. Your lease should state who handles upkeep.

If the landlord ignores your written report, you have options. Check your local tenant laws or contact a tenants' rights group. Some areas allow rent withholding or repair-and-deduct, but only under specific rules. Never withhold rent without legal advice. Your insurance company may also have input if your belongings are affected.

What You Can Do Yourself

For small patches of mold, under about 10 square feet, you can often clean it with soap and water or a mild bleach solution. Wear gloves, goggles, and a mask to avoid breathing spores. Scrub the area, then dry it completely. Never mix bleach with ammonia or other cleaners, as that creates dangerous fumes.

If the mold covers a larger area or keeps coming back, that points to an ongoing moisture problem. You can improve airflow by using exhaust fans, opening windows when weather allows, and running a dehumidifier. But you are not expected to fix structural issues. Leave that to the landlord or the pros.

When to Call the Pros

Extensive mold, mold behind walls, or mold from sewage or floodwater needs professional attention. The pros have the equipment to find hidden moisture and dry out building materials. They can also remove mold safely without spreading spores through your home. In a rental, ask your landlord to arrange this, but you can also request a water damage inspection to document the problem.

If you hire a professional yourself, keep the receipt and report. You might be able to deduct the cost from rent in some situations, but check your lease and local laws first. The goal is to protect your health and your deposit. Acting early can prevent bigger damage and costly cleanup later.

Protect Your Belongings and Health

Mold can damage furniture, clothes, books, and other personal items. Move affected items to a dry, well-ventilated area if you can. Porous items like mattresses or stuffed toys may need to be thrown away if mold has soaked in. Non-porous items can often be wiped down and dried.

Some people are sensitive to mold and may get coughing, sneezing, or headaches. If you feel unwell, see a doctor. For serious health concerns, a mold professional can assess the situation. Keep a list of any damaged belongings and their value, in case you file a claim with your renters insurance.

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Frequently asked questions

Can I break my lease because of mold?

In many states, severe mold that affects health may be grounds to break a lease, but it depends on local law and how bad the problem is. You usually need to give the landlord written notice and a chance to fix it first. Check your lease and contact a tenants' rights group for guidance.

Who pays for mold cleanup in a rental?

If the mold comes from a maintenance issue, like a leak or poor ventilation, the landlord usually pays. If you caused the problem, like leaving wet clothes piled up, you might be responsible. Document everything and check your lease. Policies vary, and your insurer decides what is covered.

What should I do if the landlord doesn't fix the mold?

Send a follow-up written notice and keep copies. You can also contact your local housing authority or health department. Some areas let you withhold rent or hire a pro and deduct the cost, but only under specific rules. Get legal advice before taking those steps.

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