Mold disclosure and mold history clause
Several states (CA, TX, NJ, VA, others) require landlords to disclose known mold contamination before you sign. A lease with a mold clause that says 'no known mold' but no inspection was done is a yellow flag.
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What it actually means
Mold disclosure laws vary by state, but the trend is toward mandatory disclosure of known contamination. Landlords who know about past mold problems — even remediated ones — often have to say so in writing before you sign.
The clauses often go further and try to shift liability to you: 'Tenant is responsible for reporting any mold within 24 hours and for any damages caused by delay.' Combined with an 'as-is condition' clause, this can leave you holding the bag for a landlord's ventilation problem.
What it looks like in a lease
"Landlord has no actual knowledge of any mold or moisture problems in the Premises. Tenant agrees to notify Landlord in writing within 24 hours of any suspected mold and acknowledges Tenant's responsibility to maintain proper ventilation and humidity levels."
What to watch for
- State-specific disclosure duties (California Civil Code § 26147, Texas Property Code § 92.052, etc.)
- Whether the lease shifts remediation cost to tenant when landlord's ventilation or roof is the source
- Notification windows shorter than 3–7 days (24 hours is unreasonable)
- Waivers of health-related claims — often unenforceable but a bad-faith signal
How to negotiate it
Ask for a mold addendum: '(1) Landlord discloses any known mold history; (2) Landlord is responsible for mold caused by building envelope, plumbing, or ventilation failures; (3) Tenant has 7 days to report, not 24 hours.'
When it crosses into a red flag
- 24-hour reporting deadline with penalty
- 'Tenant waives all claims related to mold, including personal injury' — unenforceable in most states
- No disclosure box on the form when your state requires one
Frequently asked questions
Does my state require mold disclosure?
California, Texas, New Jersey, Virginia, Maryland, and several others do. Even in states without a formal law, failure to disclose known mold can be actionable as fraud.
Want to know how this works in your specific state? Read the Security deposit laws guide, or pick your state from the guide index.
Related clauses
General information, not legal advice. Clauses are interpreted differently across states and courts. For a binding interpretation of your specific lease, consult a licensed attorney in your state.
