Landlords need to tackle mold in rentals right away in order to avoid:
More than just unsightly and malodorous, mold is a top environmental hazard that threatens a range of legal problems for rental property owners. As a landlord, you should be aware of these issues so you can prioritize mold prevention and remediation.
Mold often grows out of sight, such as behind walls or under floors, so by the time you discover a mold problem, you might not only have a substantial cleaning bill to handle, but you might need to fix costly structural damage that could threaten the physical stability of your property. Plus, if mold damages your tenants' personal belongings, you could be held liable for tenant losses, especially if your actions caused the mold problem or you didn't respond promptly to address a mold problem once it was reported or discovered.
Although the nature and extent of mold's effects on human health isn't certain, many tenants who claim that mold in their building made them sick have recovered large sums through litigation.
Some states and municipalities are adding consumer mold-protection laws to their books. If you violate state or local ordinances, you might be slapped with violations or give tenants automatic grounds to bring a lawsuit. For example, tenants in San Francisco can sue their landlords for violating city nuisance laws if the landlords fail to remove mold located anywhere inside their buildings.
If tenants believe you're not adequately responding to a mold problem in their apartments, they might choose to withhold rent, claiming that the mold is making their homes unlivable. Or, they might try to fix the problem and deduct the repair costs from their rent. Although tenants aren't always justified in pursuing such strategies, the result is a loss of the rental income stream that your business depends on.
If you discover a mold outbreak at your building and don't take steps to fix the problem and update tenants on your progress, it could lead to negative press and potential applicants choosing to look elsewhere for housing. Even if unfair or exaggerated, any reputational harm you suffer from a mold problem also threatens your business's bottom line.
Because there is so much at stake, it's important to try to prevent a mold problem from growing in your building in the first place, as well as take prompt, effective action to remove high concentrations of mold that you discover. For more advice on this, see the Nolo book Mold and Your Rental Property: A Landlord’s Prevention and Liability Guide, by Ron Leshnower. Also check out the Environmental Protection Agency’s mold information website for tips on identifying, testing for, and cleaning up mold.