New York City Mayor Zohran Mamdani has extended the deadline for homeowners to apply for exemptions from the city's new pied-à-terre tax, which took effect on July 1, 2026. The extension grants an additional month for property owners across all five boroughs who believe they qualify for an exemption to submit their applications by September 2026.

The pied-à-terre tax, approved by the New York State Legislature in May 2026, imposes an annual surcharge on certain high-value homes in New York City valued over $5 million that are not the owner's primary residence. City officials clarified that the extended deadline applies to anyone who received notices from the Department of Finance (DOF) containing the phrase "You may be subject to..."

The tax rollout initially caused confusion after the city published a supplemental market value roll on July 24 listing over 900,000 properties without clarifying that most would not be subject to the surcharge. In reality, only about 17,000 homeowners received surcharge letters.

Mayor Mamdani first announced the tax on April 15, 2026—Tax Day—in a video filmed outside hedge fund manager Ken Griffin’s $238 million penthouse on Billionaires’ Row, highlighting the tax’s focus on wealthy second-home owners. Griffin later described the video as "creepy and weird" during a discussion at the Milken Institute Global Conference.

The extension aims to provide clarity and additional time for affected homeowners to navigate the new tax requirements.

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