**Zohran Mamdani, elected NYC mayor, secured a major policy win when the mayor-appointed Rent Guidelines Board voted 7-1 in late June 2026 to impose a 0% rent increase on both one- and two-year leases for roughly one million rent-stabilized apartments.** The freeze covers the period from October 2026 through September 2027, directly implementing his central campaign pledge on affordability.
This board action, following preliminary support earlier in the year and Mamdani’s appointments shaping the panel, established strong trader consensus that the freeze would take effect before 2027. Landlords filed lawsuits in July 2026 challenging the process as biased, but these challenges have not altered the immediate implementation timeline.
With the policy locked in for the relevant window and no overriding legal or administrative reversal confirmed by early August 2026, prediction markets price the outcome at 88% Yes, reflecting the skin-in-the-game assessment of the board vote and scheduled rollout.