Discovering black mold in your home can be unsettling. Whether you notice dark patches creeping along a bathroom wall or smell a persistent musty odor, the situation should never be ignored. Black mold can point to deeper moisture problems in your home and, in many cases, may signal that your landlord has failed to maintain safe and habitable living conditions.
This guide explains exactly what to do if you find black mold in your house, how to protect your health, and when mold becomes a legal issue under California law.
Black mold (Stachybotrys chartarum) thrives in humid, damp environments and grows on materials like drywall, wood, insulation, and wallpaper. While not every mold is toxic, all molds can trigger respiratory symptoms, allergies, or worsen asthma.
The first step is simply acknowledging that what you found is important and deserves immediate attention. Mold is not something to brush aside or wait to “see if it goes away.”
Before doing anything else, take time to document the mold:
Do not scrape, scrub, or paint over the area yet. Altering the mold can spread spores or destroy valuable evidence.
Black mold does not appear without a cause. Look around the area and ask yourself:
In California, landlords are responsible for repairing leaks, ventilation failures, roof problems, and other moisture-related issues that allow mold to grow.
Written notice is crucial. California tenants should report mold through:
Include:
This establishes a timeline and protects your rights.
Exposure to black mold can cause:
If you notice symptoms, especially if they improve when you leave the home, consult a doctor and keep copies of all medical records.
Children, older adults, and people with asthma or allergies are more vulnerable, so monitor them closely.
When tenants report mold, some landlords send workers to:
These are not real solutions. Mold will return unless the moisture source is properly repaired. Temporary fixes can also hide evidence.
For very small spots (less than 10 square feet), you may attempt cleanup with proper gear, but recurring mold or large patches should always be handled by professionals.
You should contact professionals if:
Mold remediation specialists can locate hidden growth, test moisture levels, and identify the true cause. Their findings can help support a habitability or injury claim if needed.
Under California’s Health and Safety Code section 17920.3, mold and dampness are considered “substandard housing conditions.”
Under the Implied Warranty of Habitability, landlords must:
If they fail to fix the problem, delay repairs, or only cover up mold, they may be violating your housing rights.
If mold damages your belongings, keep:
You may be entitled to recover property losses as part of a legal claim.
If your landlord:
you should speak with a tenant rights attorney immediately.
The Law Offices of Katherine Cohan, APLC helps tenants across California document mold problems, prove habitability violations, and pursue claims for:
Your consultation is offered as a Free Assessment with no upfront fees.
Black mold is not something to ignore, and you do not have to handle it alone. If you find black mold in your house, taking the right steps early can protect your health, your home, and your legal rights.
Contact The Law Offices of Katherine Cohan, APLC today for a Free Assessment. We will help you understand your rights, document your case, and take legal action to ensure your home and health are protected.
