Mold Laws in Maryland (2026): New Rules That Change Everything

Most renters don’t know their rights until it’s too late. And when it comes to mold, that mistake can cost you your health. Maryland just passed one of the strongest mold protection laws in the country. Here’s what you need to know right now.

What Is Mold, and Why Does Maryland Care?

Mold is a type of fungus. It grows in damp, warm places. You’ll often find it in bathrooms, basements, and near leaking pipes.

Mold isn’t just ugly. It’s dangerous. It can cause asthma, coughing, skin rashes, and serious breathing problems. Seniors, children, and people with allergies are especially at risk.

Here’s where it gets serious. Maryland lawmakers found that nearly 38,000 rental units across the state had mold problems. That’s a public health crisis. So in 2025, the state did something bold.

The Big 2025 Law Change

Hold on, this part is important.

Maryland passed the Maryland Tenant Mold Protection Act (Senate Bill 856). It took effect on July 1, 2025. This law completely changes how landlords must handle mold in rental housing.

Before this law, renters had almost no legal tools to force a landlord to act. Courts were expensive. Lawyers were unaffordable. Many tenants just suffered in silence.

Not anymore. The new law gives you clear rights, specific deadlines, and real ways to fight back.

What Landlords Must Do Now

Give You a Mold Pamphlet

When you sign a lease, your landlord must give you an informational pamphlet about mold. It covers health risks, prevention tips, and what to do if you spot mold. You’re also allowed to request this pamphlet at any time.

Pretty straightforward, right? But here’s the thing most people miss. If your landlord skips this step, that’s already a violation of the law.

Respond Fast After You Report Mold

This is the big one. Once you report mold in writing, your landlord has 15 days to conduct a mold assessment. That means they must inspect or test for mold within two weeks. No more months of waiting and excuses.

Think of it like a doctor’s appointment. You make the call. They have a legal deadline to show up.

Read About: UTV Laws in Maryland (2026): Rules Every Rider Must Know

Fix It Within 45 Days

If mold is found during the assessment, the landlord must complete all remediation within 45 days. That means actually removing the mold and fixing whatever caused it. A leaky pipe. Poor ventilation. A damaged roof.

There is some flexibility built in. If 45 days truly isn’t enough time, the landlord can take longer, but only if the delay is unavoidable. They still have to act with urgency.

Keep You Informed

Your landlord must share the results of any mold testing with you in writing. They also must update you on progress during the fix. You’re not allowed to be kept in the dark.

This is a big deal. Before 2025, landlords could test for mold and never tell tenants the results. That’s now illegal.

What Counts as “Mold” Under Maryland Law?

Wondering what actually qualifies as mold under this law? Good question.

The law defines mold as a multicellular fungus found in indoor environments. That includes common types like black mold, green mold, and white fuzzy mold. It also includes dampness, which the law defines as excessive moisture from humidity, leaks, condensation, or water damage.

So even if you don’t see mold yet but have a wet wall or water stain, that counts. Your landlord must address it.

Your Landlord’s Ongoing Duties

The law doesn’t stop at just responding to complaints. Landlords now have continuous responsibilities. They must maintain proper ventilation in the building. They must keep indoor humidity at safe levels. They must also follow all local and state building codes that relate to moisture and air quality.

Basically, your landlord is now legally required to prevent mold. Not just clean it up after the fact.

What Can Happen to a Landlord Who Doesn’t Follow the Law?

Now, here’s where things get serious.

If your landlord breaks this law, you have real options. You’re not stuck. Here’s what you can do.

Sue for Breach of Lease

Maryland landlords have a legal duty to provide safe, livable housing. If your landlord ignores mold, they may be violating that duty. You can take them to court for breach of lease.

Claim Constructive Eviction

If mold makes your home unlivable and you’re forced to move out, that’s called constructive eviction. You may be able to sue for your costs, including moving expenses and damages for your health.

File Under the Consumer Protection Act

This one surprises a lot of people. If your landlord lied to you about mold when you moved in, that’s an unfair trade practice under Maryland’s Consumer Protection Act. You can file a complaint or sue.

Report to Local Authorities

You can also contact your local housing code enforcement office. They can inspect the property and take action against the landlord.

Read About: HOA Laws in Maryland (2026): What Every Homeowner Needs to Know

Don’t worry, we’ll break down how to do all of this step by step in the next section.

How to Report Mold and Protect Yourself

Okay, this is the action part. Here’s exactly what you should do if you have mold in your rental.

Step 1: Document everything. Take photos and videos of the mold. Write down when you first noticed it. Save any text messages or emails with your landlord about the issue.

Step 2: Write a formal notice. Your report must be in writing to trigger the 15-day clock. Send an email, a text, or a written letter. Keep a copy. Be specific about where the mold is and how long it’s been there.

Step 3: Wait for a response. Your landlord now has 15 days to assess the mold. Keep track of the dates.

Step 4: Follow up. If they don’t respond in time, send a reminder. Put everything in writing. Date your messages.

Step 5: Escalate if needed. If your landlord still does nothing, contact your local housing authority, Maryland’s Office of the Attorney General, or a tenant’s rights attorney.

Honestly, keeping good records is the most powerful thing you can do. It’s your protection if this ends up in court.

What About Mold in Commercial Rentals?

Wondering if this applies to offices or retail spaces? Good news. The Maryland Tenant Mold Protection Act covers both residential and commercial rental properties. Business tenants have the same right to written notice, timely assessments, and proper remediation.

This makes Maryland one of the only states in the country with commercial mold protections. Pretty significant.

What About Security Deposits and Mold?

Here’s something many renters get wrong.

If mold damage in a rental unit was caused by the tenant, the landlord can deduct cleanup costs from the security deposit. But there are rules. The landlord must provide a written explanation of the deductions within 45 days of the lease ending. They must return whatever is left of the deposit at the same time.

If the mold was not your fault, you may be able to dispute the deduction. Keep receipts and photos from when you moved in.

Statewide Standards Are Coming in 2027

Here’s one more thing to watch. The Maryland Department of the Environment has until June 1, 2027 to create official, uniform standards for mold assessment and remediation. That means statewide rules for testing methods, acceptable mold levels, and cleanup procedures.

Right now, the law requires action but doesn’t always spell out exactly what a “safe” level of mold looks like. That changes in 2027. Those standards will make enforcement even clearer and give tenants even stronger legal ground.

Read About: Month to Month Lease Laws in Maryland (2026): Rules Every Renter Should Know

Stay with me here, because this matters for the future.

Frequently Asked Questions

Does the mold law apply to all rentals in Maryland? Yes. The law covers apartments, houses, condos, commercial spaces, and multifamily housing throughout the state.

What if my landlord says they can’t fix the mold in 45 days? The law allows flexibility when 45 days is genuinely not enough time. But the landlord must still act quickly and keep you informed about the delay and timeline.

Do I have to report mold in writing? Yes. The 15-day assessment clock only starts when you give written notice. A verbal complaint does not trigger the legal deadline.

Can my landlord raise my rent or try to evict me for reporting mold? Retaliation is illegal under Maryland law. If your landlord threatens or punishes you for making a legal complaint, contact a tenant’s rights attorney right away.

What if I caused the mold by not ventilating properly? Tenant-caused mold is treated differently. Your landlord may still be required to remediate, but they could deduct costs from your security deposit or hold you responsible for damages.

Can I withhold rent until the mold is fixed? This is risky. Maryland does not have a straightforward statewide rent withholding law for mold. Talk to an attorney before stopping rent payments, as this could lead to eviction proceedings.

Where can I get free help as a tenant? Maryland Legal Aid provides free legal services to qualifying tenants. You can also contact the Maryland Department of Housing and Community Development or your county’s housing office.

Final Thoughts

Maryland’s mold laws changed big time in 2025. You now have a landlord who is legally required to act fast, communicate openly, and fix the problem for real.

Most people still don’t know these rules exist. Now you do. So if you ever find mold in your rental, you know exactly what to do. Document it. Report it in writing. Track the deadlines. And don’t be afraid to push back if your landlord drags their feet.

You deserve a safe home. The law agrees.