Condo owners at a Billionaires Row supertall accuse its builders of deliberate and far-reaching fraud over hiding dangerous defects

When it comes to 432 Park Ave., one of Manhattan’s most expensive addresses, the cracks aren’t just in the concrete — they’re in the trust.The board at the famed Billionaires’ Row supertall is accusing its developers of orchestrating a “deliberate and far-reaching fraud” by concealing thousands of defects, many of which they claim compromise the building’s structure and safety, according to the New York Times. In two lawsuits — one filed in 2021, the other in April 2025 — unit owners allege a cover-up that spans nearly a decade and hundreds of millions of dollars.“This matter extends beyond negligence into an alleged calculated scheme, driven by greed, that eroded trust,” Terrence Oved, an attorney representing the condo board, told The Post in a statement.At the center of the newest legal complaint is the building’s signature white concrete façade, a design element that doubles as a load-bearing structure for the 1,396-foot-tall tower, according to the Times.The April lawsuit, filed in New York State Supreme Court, claims that developers CIM Group and Macklowe Properties knew the concrete mix would not hold up under pressure but forged ahead with construction anyway — ignoring internal warnings, failed tests and mounting evidence of structural deficiencies.“It is difficult to know the impact of cracking in a fully loaded building,” Viñoly Architects noted in a 2012 field report cited in the filing. Also cited in the suit: Another engineering firm, WSP, echoed the concern and advised developers to “hold the pour” until a “valid” mix was confirmed.Both cautions were allegedly dismissed.The lawsuit claims cracks appeared in nearly every mock-up and persisted well into the construction phase, with more than 1,800 identified by 2016 — many categorized as “life safety items.” Problems ranged from surface blemishes to “large voids, spalls of unknown origin, unfilled cracks, opened cracks and other serious deficiencies,...