New York froze rent-stabilized rents at 0%. Its own cost index said 5.3%.

Every June, the New York City Rent Guidelines Board sets the legal rent increase for the roughly one million apartments still under rent stabilization.▸ This year it set it at zero. On June 25, 2026, the nine-member board adopted a 0% increase for both one-year and two-year renewal leases commencing between October 1, 2026 and September 30, 2027 — the first time in the board's history it has frozen a two-year lease as well as a one-year one, fulfilling a campaign pledge from Mayor Zohran Mamdani, who appointed six of the nine members.

The board's own research staff had, weeks earlier, published the numbers it is legally required to weigh.▸ The 2026 Price Index of Operating Costs found that costs for buildings containing rent-stabilized apartments rose 5.3% over the year — and projected another 4.1% the year after. Board Chair Chantella Mitchell's statement released the day of the vote names that number directly, alongside the reasoning for freezing anyway: tenant affordability, not owner cost growth, drove the decision.

The Rent Stabilization Law doesn't let the board set guidelines by feel — section 26-510(h) requires it to weigh "prevailing and projected...gross operating maintenance costs."▸ The board's own staff translates that cost data into reference formulas every year. Neither one produced zero.

The "traditional" commensurate formula — built to hold owners' current-dollar net income constant against the year's cost change — would have yielded 3.4% for a one-year lease and 4.8% for a two-year lease, per the PIOC report.▸ A second formula, which also adjusts for inflation, would have yielded 4.5% and 8.5%. The board isn't bound to either formula — it's required only to consider them — and Mitchell's statement makes the tradeoff explicit: over half of renter households are rent-burdened and nearly 30% severely so, while "most owners...remain able to meet rising costs...though a small segment faces measurable financial strain."

Insurance and fuel led the increase — insurance costs are up a cumulative 99.9% over the past five years alone.▸ Labor Costs — union and non-union wages, payroll taxes, and benefits for the people who staff these buildings — rose a more moderate 3.0%, with unionized wages up 3.3% and non-union pay up 3.5%. That figure reflects wages under the prior, already-in-force Local 32BJ contract, not an estimate. The report's caveat that a new contract "had not yet been settled as of the report's April 9, 2026 publication date, so staff projected union wages using a ten-year historical average" applies specifically to next year's 4.1% projection, not this cycle's 3.0% figure.

That contract got settled anyway, on a different clock than the RGB's. On April 17, 2026 — eight days after the PIOC was published — 32BJ SEIU reached a tentative four-year agreement with the Realty Advisory Board on Labor Relations, the group that bargains on behalf of the city's residential owners, averting a strike that would have affected building staff in 3,500 co-ops, condos, and apartment buildings housing 600,000 households.▸ Members ratified it on June 5, 2026, with 94% in favor — three weeks before the RGB's freeze vote. The deal: a $4.50-an-hour raise over four years (a weighted average of 3.48% a year), a 15% increase to the guaranteed pension, and no premium-sharing on employer-paid health coverage, covering nearly 34,000 doorpersons, porters, handypersons, supers, and resident managers.

None of that runs through the Rent Guidelines Board.▸ It's a separate, binding, four-year obligation that owners of unionized buildings now carry regardless of what the RGB lets them collect in rent — a real cost increase settled in the same season as a rent freeze, through a process the freeze has no power over.

On average, a rent-stabilized unit generated $1,891 a month in income in 2024 (the most recent year the RGB has full data for) — $1,203 of it went to operating costs, leaving $688 in net operating income (NOI) — up 6.2% from 2023, the third straight year of NOI growth Citywide.▸ That average hides the buildings the freeze bears down on hardest: NOI growth was just 2.4% in buildings that are 100% rent-stabilized, versus 6.2% for buildings with at least one stabilized unit, and the cost-to-income ratio for fully stabilized buildings runs to 66.3%, Mitchell's statement notes, versus 63.6% Citywide. Nearly one in ten stabilized buildings — 9.2% — already posts a net operating loss.

Dollar and net-operating-income figures reflect the RGB's 2026 Income and Expense Study, based on calendar-year 2024 filings — the most recent complete data available. The freeze covers leases commencing October 1, 2026 through September 30, 2027.