California Civil Code Section 1940.9 and Health & Safety Code Section 26147 require landlords to disclose known visible mold to prospective tenants. Contra Costa County follows state law with no supplemental local mold ordinance.
Unincorporated Contra Costa County defers to California state law on mold disclosure. Under Civil Code Section 1940.9 and Health & Safety Code Sections 26140 through 26156 (Toxic Mold Protection Act of 2001), landlords must provide written disclosure to prospective and current tenants when they know or reasonably should know visible mold exceeds permissible exposure levels or threatens health. The Department of Public Health has not finalized statewide permissible exposure limits, so disclosure is triggered primarily by visible mold or known water intrusion. Contra Costa Health Services investigates habitability complaints involving mold under California Health & Safety Code Section 17920.3 (substandard housing), which classifies dampness and mold as habitability defects warranting code enforcement. Tenants may withhold rent, repair and deduct, or sue under implied warranty of habitability.
Contact your local code enforcement office for specific penalty information.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Martinez, CA
Amplified music in Martinez is prohibited from being plainly audible beyond 50 feet from the property line at any time, and is subject to full quiet hour res...
Martinez, CA
Martinez has no municipal airport and aircraft noise is primarily regulated at the federal level by the FAA. Buchanan Field Airport in nearby Concord generat...
Martinez, CA
Construction noise in Martinez is restricted to 7:00 AM to 7:00 PM Monday through Friday and 8:00 AM to 5:00 PM on Saturdays, with no construction permitted ...
Martinez, CA
Martinez prohibits habitual dog barking that disturbs neighbors under Municipal Code Chapter 6.04 and noise provisions in Chapter 8.20. Continuous barking fo...
Martinez, CA
Vehicle noise in Martinez is regulated through California Vehicle Code sections enforced by Martinez Police, including prohibitions on modified exhaust syste...
Martinez, CA
Martinez Municipal Code Chapter 8.20 prohibits unreasonably loud, disturbing, or unnecessary noise between 10:00 PM and 7:00 AM on weekdays and 10:00 PM and ...
Side-by-side rule comparisons with other cities in Contra Costa County.
See how other cities in Contra Costa County handle mold disclosure.
See how Martinez's mold disclosure rules stack up against other locations.
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