Landlord Duty to Remove Mold
  • posted: Nov. 20, 2025

A Tenant’s Guide to the Landlord Duty to Remove Mold

When mold appears in a rental property, tenants often wonder, "Who is responsible?" If you rent in New York City, it’s important to know that landlords are responsible for getting rid of mold. This article covers who is responsible for mold removal, what NYC law says, and what renters can ask for if mold affects their home.


1. Legal Foundation: Warranty of Habitability

Every lease in New York City includes the "warranty of habitability." Landlords must keep the property in good shape for tenants. If mold grows from leaks, dampness, or neglect, the landlord might break this warranty. This obligation is the landlord duty to remove mold.

The landlord must fix the mold problem if it’s due to structural issues, plumbing leaks, poor maintenance, or other factors they control. The landlord might not be liable if the tenant causes mold. For example, if the tenant doesn't open the bathroom window or keeps windows shut in a humid room, they could be at fault.


2. NYC Codes & HPD Standards

The New York City Housing Court and HPD enforce mold-related housing rules. The NYC Housing Maintenance Code (HMC) states that landlords must keep homes dry and free from leaks and water. These conditions can lead to mold growth. When needed, HPD issues violations. Thus, landlords must remove mold by fixing leaks, addressing water damage, and eliminating damp items. They also need to clean up moisture thoroughly.

If a landlord doesn't fix mold that keeps growing due to building issues or water leaks, HPD may impose a Class B or Class C penalty. Tenants can use this violation as proof that the landlord failed in their duties. The clearer the landlord's responsibilities, the easier it is to link mold issues to removal needs.


3. Who Bears the Responsibility?

Tenant vs. Landlord – key distinctions:

  • Landlord liability often arises when mold results from problems like structural defects, plumbing failures, damp walls, or roof leaks. These problems are all under the landlord’s control.

  • If the tenant causes mold by not cleaning after a shower or blocking ventilation, the landlord may say it's the tenant's fault.

  • If both the tenant and landlord share some responsibility, like a leak that the tenant didn’t report, then they may both be liable.

So, to know if the landlord duty toremove mold, we first need to find out what caused it.


4. What Tenants Can Demand Your Rights

If you’re dealing with mold, you can assert your rights. Under NYC law, a tenant may:

  • Send the landlord a written notice describing the mold and requesting remediation.

  • Request that the landlord conduct a repair to stop the source of moisture or leaks.

  • Ask for a professional mold assessment or cleanup when appropriate.

  • Seek a rent reduction or abatement if mold and dampness reduce habitability.

  • Report the issue to HPD and use documentation to support your claim.

  • In housing court, argue that the landlord breached the warranty of habitability by failing to satisfy the landlord duty to remove mold.


5. Documentation Steps & Action Plan

Here is a suggested step-by-step plan for tenants facing mold:

  1. Take photographs of the mold, including date, location, and extent.

  2. Notify the landlord in writing Use text or email, plus a certified letter if possible. State that mold is present and you think it's due to a problem the landlord controls, like a leak. Also, ask for remediation, as the landlord has a legal duty to remove mold.

  3. Keep a log of your communications with the landlord: date, time, what was said, outcome.

  4. Report to HPD if the landlord fails to act — you can call the 311 line or file a complaint online.

  5. Secure expert reports if possible: an indoor air quality test, building engineer’s report, or mold remediation estimate.

  6. Preserve proof of living conditions (medical issues, breathing problems, etc.) if mold may have impacted health.

  7. Seek legal advice from a landlord-tenant attorney to discuss rent abatement, termination options, or a housing court case.


6. What Happens If the Landlord Fails to Act?

When a landlord ignores mold complaints and fails to fulfill the landlord duty to remove mold, the tenant has several remedies:

  • File a lawsuit or request a hearing in housing court alleging a breach of the warranty of habitability.

  • Seek an order directing repair and remediation of the mold problem.

  • Request rent withholding or rent reduction to reflect the diminished value and safety of the dwelling.

  • Use evidence of HPD violations to strengthen your case.

  • Consider vacating the premises if conditions are severe and uninhabitable but only after consulting an attorney.


Final Words

Tenants can safeguard their rights and hold landlords responsible by understanding the duty to remove mold. In New York City, landlords must quickly repair leaks, moisture, and mold to keep their properties in good condition. As a renter, you should be proactive to protect your health and housing rights. This involves monitoring conditions, being clear in your communication, and knowing your options.

If you find mold in your rental property and believe it’s due to the landlord's actions, you may have strong legal grounds to request repairs under NYC law. First, educate yourself. Then, take action.