Makes use of algorithmic systems to influence price and supply of residential rental units unlawful.

New Jersey bill S 3657 prohibits landlords and property management software companies from using algorithmic systems to coordinate rental prices and supply, which the bill states may reduce competition and raise rents. It defines a "coordinator" as any entity (including property owners using their own software) that collects price data from multiple landlords, analyzes it with algorithms, and recommends rental prices or occupancy levels. The bill makes it unlawful to contract with such services or facilitate price-fixing agreements, aligning with New Jersey's Antitrust Act. This directly affects landlords, property management software providers, and rental markets, targeting practices cited as contributing to a 35% median rent increase for three-bedroom units since 2021.