Flooding:
In leases or rental agreements signed after July 1, 2018, landlord must disclose, in at least eight-point type, that the property is in a special flood hazard area or an area of potential flooding if the landlord has actual knowledge of this fact. Actual knowledge includes receipt from a public agency so identifying the property; the fact that the owner carries flood insurance; or that the property is in an area in which the owner’s mortgage holder requires the owner to carry flood insurance. Disclosure must advise tenant that additional information can be found at the Office of Emergency Services’ website, and must include the Internet address for the MYHazards tool maintained by the Office. Disclosure must advise tenant that owner’s insurance will not cover loss to tenant’s property, and must recommend that tenant consider purchasing renter’s insurance that will cover loss due to fire, flood, or other risk of loss. Disclosure must note that the owner is not required to provide additional information. (Cal. Govt. Code § 8589.45.)
Bed bug information:
Before signing a lease or rental agreement, landlords must give potential tenants information about bed bugs, including information about their behavior and biology, the importance of cooperation for prevention and treatment, and the importance of prompt written reporting of suspected infestations to the landlord. (Cal. Civ. Code § 1954.603.)
https://www.nolo.com/legal-encyclopedia/california-required-landlord-disclosures.html