Landlord Mold Responsibility in New York: The Warranty of Habitability, Local Law 55, and Your Rights

New York landlords have a real, enforceable legal responsibility to address mold in a rental unit — it isn’t just a courtesy or a maintenance best practice. That responsibility comes from two layers of law: the statewide warranty of habitability (Real Property Law § 235-b), which applies to every residential lease in New York State, and, for New York City specifically, Local Law 55 of 2018 (the Asthma-Free Housing Act), which adds mold-specific annual inspection and remediation duties for owners of buildings with three or more units. Which layer applies to you depends on where in New York you live and how many units are in your building.

The Statewide Baseline: Warranty of Habitability (RPL § 235-b)

New York Real Property Law § 235-b applies to every written or oral residential lease in the state. It provides that the landlord is deemed to warrant that the premises, and any common areas, “are fit for human habitation and for the uses reasonably intended by the parties” and that occupants “shall not be subjected to any conditions which would be dangerous, hazardous or detrimental to their life, health or safety.” A tenant cannot waive this warranty — any lease clause attempting to do so is void as against public policy.

A serious, ongoing mold condition — particularly one connected to a water leak, roof failure, or plumbing problem the landlord hasn’t fixed — can constitute a breach of this warranty. Tenants asserting a breach have historically had remedies including rent abatement (a reduction in rent proportional to the loss of habitability) pursued through Housing Court, though the specific facts, evidence, and how a court weighs them vary by case. This statewide protection applies whether you’re in New York City, Buffalo, Yonkers, or anywhere else in the state — it does not depend on building size or unit count.

New York City’s Additional Layer: Local Law 55 of 2018

If your rental is in New York City, in a building with three or more residential units, an additional and more specific set of landlord obligations applies under Local Law 55 of 2018, also known as the Asthma-Free Housing Act, enforced by the NYC Department of Housing Preservation and Development (HPD).

Under Local Law 55, covered building owners must:

Conduct annual inspections of units for indoor allergen hazards, including mold and pest infestations (mice, rats, cockroaches), and investigate promptly whenever a tenant complains of a condition likely to cause mold or a pest problem.
Clean and prepare vacant units so they are free of mold and pests before a new tenant moves in.
Use safe, prescribed remediation practices when correcting mold and its underlying causes (leaks, moisture, ventilation defects) — the law specifies safe work practice standards, not just a cleanup requirement.
Provide tenants with a required notice and fact sheet — “What Tenants and Landlords Should Know About Indoor Allergens and Local Law 55” — with each lease, explaining the owner’s obligations.
Keep inspection records for at least three years, documenting the date of each inspection, findings per unit, and remediation actions taken.

HPD enforces Local Law 55 and can issue violations against owners who fail to inspect, fail to remediate, or fail to meet the law’s notice and recordkeeping requirements. Tenants can request an HPD inspection directly if they believe their landlord isn’t meeting these obligations.

New York’s Licensed Mold Industry — Relevant to How Landlords Must Remediate

New York State separately regulates who is legally allowed to perform mold work, under Labor Law Article 32 (the 2015 “Mold Law,” fully effective 2016), enforced by the state Department of Labor. This matters directly to landlord responsibility: a landlord addressing a mold condition in New York is expected to use properly licensed professionals, not informal cleanup.

DOL licenses Mold Assessors, Mold Remediation Contractors, Mold Supervisors, and Abatement Workers separately.
The same entity cannot hold both the assessment and remediation license for the same project — an independent assessor must define the scope of work before remediation begins.
Anyone advertising or performing mold assessment, remediation, or abatement work in New York without the applicable DOL license is operating illegally, regardless of whether they’re a large contractor or an individual handyman.

For tenants, this means a legitimate landlord response to a mold complaint should involve a licensed assessor identifying the scope and a licensed remediation contractor (a different entity) doing the work — not a superintendent spraying bleach and painting over the area, which does not constitute proper remediation under state standards.

What Tenants Should Do

Document the condition — photograph the mold with visible timestamps, and note when it appeared and any related leaks or moisture.
Notify the landlord in writing — email or certified mail creates a paper trail showing when the landlord was put on notice, which matters for both a habitability claim and (in NYC) a Local Law 55 complaint.
In NYC, file an HPD complaint if the landlord doesn’t act — call 311 or file online at nyc.gov/hpd. HPD can inspect and issue violations requiring remediation.
Outside NYC, pursue Housing Court remedies if the landlord fails to correct a serious condition after notice — a habitability claim under RPL § 235-b can support rent abatement or other relief, decided on the specific facts.
Verify any contractor’s DOL mold license before assuming remediation work was done properly — ask for the assessor’s and remediator’s license numbers and check them through the NY DOL licensing portal.

Frequently Asked Questions

Are all New York landlords required to inspect for mold annually?

Only in New York City, and only for buildings with three or more residential units, under Local Law 55 of 2018. Outside that scope, the statewide warranty of habitability still applies, but it doesn’t impose the same mandatory annual inspection schedule.

What can I do if my landlord ignores a mold complaint?

In NYC, file a complaint with HPD (311 or nyc.gov/hpd), which can inspect and issue violations. Statewide, tenants can pursue relief in Housing Court under the warranty of habitability, including potential rent abatement, depending on the facts.

No. RPL § 235-b explicitly voids any lease provision attempting to waive or modify the warranty of habitability, as contrary to public policy.

Is a landlord’s handyman allowed to do mold remediation in New York?

Not legally, if the job requires a license under Labor Law Article 32 — mold assessment, remediation, and abatement in New York require DOL-licensed professionals, and the assessor and remediator must be separate entities.

Does Local Law 55 apply to a two-family house I rent in NYC?

No — Local Law 55’s inspection and remediation duties apply to buildings with three or more units. A one- or two-family rental in NYC is still covered by the statewide warranty of habitability, but not by Local Law 55’s specific annual-inspection regime.

What counts as proper mold remediation in New York, legally speaking?

Under the DOL’s mold program, a licensed assessor should define the scope of work in a written protocol, a licensed remediation contractor (a different entity) performs the removal following minimum work standards, and — best practice — the independent assessor verifies the work with post-remediation testing. Painting over mold or wiping it with bleach without addressing the underlying moisture source does not meet this standard.

Can I withhold rent in New York because of mold?

Rent withholding is legally risky without following the correct process — tenants generally need to go through Housing Court (an HP action or similar proceeding) rather than unilaterally withholding rent, to avoid exposure to a nonpayment eviction case. Consult a tenant attorney or a legal aid organization about the correct process for your situation before withholding rent.

Sources

New York Real Property Law § 235-b — Warranty of Habitability (NY State Senate, official statute text)
NYC HPD — Indoor Allergen Hazards (Mold and Pests) / Local Law 55 of 2018
New York State Department of Labor — Mold Program (Labor Law Article 32)
New York Labor Law Article 32 — full statute text

This guide is general information, not legal advice. Housing and habitability law involves fact-specific procedures (notice requirements, court filings, deadlines) that a tenant attorney, legal aid organization, or HPD directly can advise on for your specific situation.