CA SB52

Prohibits selling, licensing, or providing rental pricing algorithms to two or more persons with the intent or reasonable expectation that they be used by multiple landlords in the same market to set rent prices for residential properties

Makes it unlawful for landlords to adopt rental terms based on algorithmic recommendations if they know the algorithm processes nonpublic competitor data (actual rent amounts, occupancy rates, lease dates) and is used by other landlords in the same market

Defines "rental pricing algorithm" as revenue management software that uses nonpublic competitor data to advise landlords on setting rental terms, but excludes reports publishing only aggregated public data or tools for affordable housing program compliance

Authorizes the Attorney General, city attorneys, and county counsel to file civil actions for violations, with penalties up to $1,000 per violation, plus damages, injunctive relief, and restitution

Allows individuals harmed by violations to sue for damages, injunctive relief, and civil penalties up to $1,000 per violation, with mandatory attorney's fees for prevailing plaintiffs