Two structural columns buckled July 7 at the former Pfizer headquarters in Midtown Manhattan, halting the nation's largest office-to-residential conversion — a 1,600-unit project by MetroLoft — and triggering citywide safety probes that threaten the 90,300-unit national conversion pipeline.
Two structural columns buckled July 7 at the former Pfizer headquarters in Midtown Manhattan, halting the nation's largest office-to-residential conversion and triggering citywide safety probes that threaten a 90,300-unit national pipeline.
The failure occurred on the 21st floor of the 33-story tower at 235 East 42nd Street, where developer Nathan Berman's MetroLoft was adding 10 floors and horizontally expanding 16 floors to create 1,600 apartments. The two steel columns bent under the weight of the new construction, causing floors above to sag and shutting down blocks of Midtown, according to the New York City Department of Buildings.
"The bond bid reflects positioning for a BoJ pause," said Takeshi Minami, chief economist at Norinchukin Research.
"This is no trivial bend — that's a total failure," said Eric Cowley, a structural engineer who reviewed images released by the FDNY and the Department of Buildings. "That's an amazing amount of deformation."
City-approved structural plans reviewed by Gothamist show the two columns were required to have steel reinforcement installed from the 9th floor to the 21st floor — directly beneath the 10-story addition that widened the original structure's upper floors. The Department of Buildings initially posted a complaint summary blaming "failure to provide steel reinforcement as per approved plans" for the incident, then deleted that language the same day. Spokesperson Andrew Rudansky said the initial note was "not accurate."
The DOB has since ordered safety sweeps of other construction sites across the five boroughs, targeting projects involving the same companies that own or are contracted to work on the Pfizer conversion, according to people familiar with the matter. Domani Inspection Services, the firm hired to oversee structural steel and welding inspections on the 42nd Street project, has a record of violations at other recent construction sites, the New York Times reported. GACE Consulting Engineers drafted the structural plans. Neither firm responded to requests for comment.
Prosecutors from the Manhattan District Attorney's Office and the Department of Investigation have opened a preliminary criminal inquiry into the incident, according to the New York Times. The scope and target of the investigation are not yet public.
The Conversion Boom Hits a Structural Limit
Berman, 66, has been the leading figure in the office-to-residential conversion boom, completing more than a dozen projects totaling over 8,000 apartments over three decades. His firm turned 25 Water Street into 1,320 units — the nation's largest conversion before the Pfizer project — and has received financing from JPMorgan Chase and Apollo.
The economics of conversions have become increasingly attractive as Manhattan's apartment vacancy rate sits below 2% and office values have fallen as much as 90% in some cities. Nationwide, 90,300 units were in the office-to-apartment pipeline at the start of the year, according to RentCafe. New York's "City of Yes" zoning reforms under former Mayor Eric Adams removed parking mandates and increased the number of buildings eligible for conversion.
But the Pfizer building failure exposes the risks of the industry's push toward ever-larger projects. MetroLoft's additions to the former headquarters — 19 floors on a smaller 10-story building and 2 floors plus horizontal expansion on the 33-story tower — required reinforcing original steel columns that were not designed for the additional weight. Structural plans called for one 2-inch weld every foot along the reinforcement plates rather than a continuous weld, a detail that Eugene Gurevich, a structural engineer at RAND Engineering & Architecture, said raised questions about whether the welds were sufficient.
"If reinforcing plates were missed, how did this escape quality control and special inspections?" said Chris Cerino, past president of the Structural Engineers Association of New York.
What's at Stake for the Conversion Market
The incident threatens to slow a conversion pipeline that investors and policymakers have relied on to address the dual crises of empty office towers and housing shortages. Lenders and institutional investors who committed capital to the sector are now demanding reassurance. Michael Pestronk, a converter of office buildings in Philadelphia and Washington, D.C., said he sent photographs of structural reinforcements to investors and lenders who asked whether their projects faced similar risks.
"We have three sets of belts and suspenders," Pestronk said.
The DOB has not disclosed what caused the columns to buckle. A third-party engineering firm, Thornton Tomasetti, is overseeing recovery work and conducting an investigation. Temporary shoring has been installed from the 9th story to the rooftop, and a partial vacate order remains in effect. The project was slated for completion next year.
Berman told the New York Times the day of the failure that he suspected the two columns were not properly reinforced and called it a construction problem that "has zero to do with the conversion." MetroLoft said in a statement it is working with the DOB to complete repairs.
The outcome of the investigation could determine whether the conversion boom continues at its current pace or faces new regulatory hurdles that raise costs and extend timelines. Real estate lawyer Jay Neveloff said the incident could lead to "a whole new set of regulations and rules."
This article is for informational purposes only and does not constitute investment advice.
