New York developers are on track to start 9.5 million square feet of office-to-residential conversions in 2026 — more than double last year and nearly twice the city's 2008 peak. Here's why it's happening now.
The Numbers
After years of stalled momentum, adaptive reuse in New York City has reached an inflection point. Developers launched construction on 4.3 million square feet of residential conversions in 2025 — up nearly 60% from 2024. For 2026, that figure is set to more than double, with 9.5 million square feet in the pipeline, according to Cushman & Wakefield. That nearly doubles the city's previous conversion peak, set in 2008.
The pipeline is overwhelmingly rental. In 2026, conversions are expected to produce roughly 2,000 rental units and about 317 condos. By 2028, projections rise to 6,540 rentals and 242 condos.
Why Now: Three Forces Aligned
The 467-m tax break. Created in the 2024 state budget, the 467-m incentive grants developers generous property tax exemptions for converting commercial buildings into housing — provided a share of the units are reserved as affordable. The most generous benefits go to projects that break ground by June 30, 2026, which is driving a rush of activity this year. Because the incentive applies only to rental units, it explains why the pipeline skews so heavily toward rentals over condos.
City of Yes zoning reform. The citywide zoning overhaul adopted in 2024 cleared red tape that previously blocked many conversions. Among the changes: eligibility expanded from buildings built before 1961 to those built before 1990, opening up a far larger inventory of convertible offices, plus relaxed rules on light, air, and unit layout.
Falling office values. Persistent office vacancy and declining commercial property values have made conversion economically attractive. Buildings that no longer pencil out as offices can find a second life as housing — and owners facing weak office demand are increasingly willing to sell or convert.
The Signature Projects
The scale is visible in marquee deals. 25 Water Street delivered 1,320 luxury units in 2025 — the largest office-to-residential conversion in U.S. history to date. 5 Times Square began a 1,250-unit conversion, financed by a $1.3 billion loan, with first-phase completion scheduled for 2027. Major developers including TF Cornerstone and Northwind Group have re-entered or expanded in the conversion market.
The Catch: A Closing Window
The boom may be front-loaded. The value of the 467-m incentive drops for projects that don't begin by mid-2026, then drops again for those starting after mid-2028. Industry experts expect the pace of new conversions to taper after 2026 as the most generous tier of benefits expires. That makes 2026 a deadline-driven surge as much as a structural shift.
What It Means for Renters
For renters, the conversion boom is supply — and supply matters. Thousands of new rental units in former office towers, many in prime Manhattan locations near transit, add inventory to a chronically tight market. Under 467-m, at least 25% of units in participating buildings must be income-restricted and rent-stabilized, meaning a meaningful share of these new units will be permanently affordable.
If you're apartment-hunting in Manhattan over the next few years, expect more options in converted office buildings — especially in the Financial District and Midtown, where the conversion pipeline is concentrated.
Frequently Asked Questions
How many office-to-residential conversions are happening in NYC in 2026? Developers are on track to start 9.5 million square feet of conversions in 2026 — more than double the 4.3 million square feet started in 2025.
What is driving the NYC office conversion boom? Three factors: the 467-m tax incentive (with the best benefits expiring mid-2026), City of Yes zoning reform that expanded eligibility, and falling office property values.
Are converted units affordable? Buildings using the 467-m tax break must reserve at least 25% of units as income-restricted and rent-stabilized. The rest are market-rate.
Related NYC Housing Guides
- What Is the 467-m Tax Break, and Why It's Reshaping NYC Housing
- Is 2026 a Buyer's or Seller's Market in NYC?
- How to Check If Your Apartment Is Rent-Stabilized in 2026
Sources: Cushman & Wakefield via CRE Daily and Bisnow, December 2025; New York YIMBY, January 2026; NYC HPD 467-m program. This article is for informational purposes only and does not constitute legal or financial advice.
