MA S2983

Prohibits landlords from using algorithmic devices or AI-based software that processes nonpublic competitor data to set, change, or determine rent prices or occupancy levels for residential dwelling units in Massachusetts.

Defines "algorithmic device" as computational processes using machine learning or AI that analyze nonpublic competitor data to advise landlords on rent amounts, but exempts monthly trade association reports with aggregated anonymous data and tools used for affordable housing program compliance.

Defines prohibited "coordinating functions" as collecting rent prices, supply levels, or lease dates from multiple landlords, processing that data through algorithms, and recommending rental prices or occupancy levels.

Violations constitute a Chapter 93A consumer protection violation with civil penalties up to $5,000 per violation, with each rent determination counting as a separate violation.

Successful plaintiffs, the Attorney General, or municipalities may recover attorney fees, expert fees, and investigation costs in enforcement actions.