Landlord-Tenant Law

Landlord Liability for Toxic and Black Mold

Can a tenant sue if there's mold on the premises?
Updated by Janet Portman, Attorney · Santa Clara University School of Law
Updated: Sep 17th, 2019
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All states (except Arkansas) require landlords to offer and maintain fit and habitable housing. Legislatures and courts are increasingly including the significant presence of certain types of mold as a health hazard that might violate the landlord’s duty. Understanding and quantifying the risks of breathing in toxic mold spores is a challenging area of science and medicine; indeed, experts have yet to identify all of the molds that are dangerous to health. Problems proving that an injury was a direct result of exposure to toxic mold have also made it difficult to pursue this type of case.

In spite of the medical and scientific challenges, tenants in several states have successfully sued their landlords for the consequences to the tenants’ health from unremediated mold in their rentals. If mold develops in your apartment as a result of your landlord’s poor maintenance, and you can prove it has significantly affected your health, you might be able to file a personal injury lawsuit against your landlord.



Tenants Responsible for Mold Cannot Blame the Landlord

Your ability to collect from your landlord when mold had made your sick has one big “but if”: The problem must have resulted from the landlord’s failure to maintain the property, not your own poor housekeeping. For example, leaving windows open while it is raining, refusing to allow the landlord access to the apartment for maintenance, and improperly using appliances that cause high humidity (not letting steamy bathrooms dry out) are all actions that the tenant is responsible for, not the landlord. As a result, in most instances, the landlord will not be liable.

Some States and Cities Have Passed Mold Laws

A handful of states have passed laws to establish acceptable levels of indoor mold spores. Certain cities, including New York City and San Francisco, have included mold in their list of “nuisances” and department of health guidelines. If you live in these areas, your landlord has an increased responsibility for mold. You might be able to make a claim against the landlord for violating these specific laws, regulations, and guidelines.

State and local laws might also require landlords to disclose information about mold to tenants. Check your state’s required landlord disclosures laws to ensure your lease or rental agreement is in compliance.

Mold Disclaimers in Leases Might Not be Valid

Some landlords attempt to forestall any mold-related claims by including a clause in the lease or rental agreement that exempts them from liability for mold. Whether a court in your state would uphold such a waiver depends on whether absence of mold has been recognized in your state as part of the landlord’s duty to maintain fit housing. Even if your state legislature has not specifically included mold remediation as part of the landlord’s maintenance duty, a court might construe the landlord’s maintenance duty broadly, to include mold.

As you can see, the validity of mold liability waivers in leases is state-law dependent, and in some states, courts have not even ruled on the issue. As more cases of mold litigation make their way through state court systems, and legislatures take up the question, the answers will become clearer.

The law surrounding personal injuries sustained from exposure to toxic mold is complicated. Plus, the facts of each case are unique. This article provides a brief, general introduction to the topic. For more detailed, specific information, consider contacting a local personal injury lawyer.

Janet Portman Attorney · Santa Clara University School of Law

Janet Portman joined Nolo in 1994 and is the Executive Editor. She has a Bachelor’s degree (Honors Humanities, Phi Beta Kappa) and Master’s degree (Religious Studies) from Stanford University, and a law degree from Santa Clara University School of Law. Her first job was with the California State Public Defender, where she handled criminal appeals for indigent clients and spent six months trying cases for the Alameda County Public Defender. She successfully argued a case before the California Supreme Court. (People v. Woodard, 23 Cal.3d 329 (1979).) Janet is an active member of the California State Bar.

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