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Penthouse pieds-à-terre: Bezos, Trump, and other billionaires facing Mamdani's proposed tax

Reported by Businessinsider
Apr 18, 2026· 3 min read
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Key Takeaways
  • • New York City Mayor Zohran Mamdani and Governor Kathy Hochul proposed a pied-à-terre tax on non-primary residences valued above $5 million, estimated to generate $500 million annually for the state.
  • • The tax applies to non-primary homes owned by those living abroad, in other states, elsewhere in New York State, and investment properties, levied in addition to existing property taxes.
  • • High-profile billionaires targeted include Citadel CEO Ken Griffin ($238 million Midtown penthouse purchased in 2019), Jeff Bezos, Donald Trump, and Russian auto dealer Alexander Varshavsky ($20.5 million Columbus Circle apartment).
  • • Critical implementation details remain undefined: New York officials have not publicly disclosed how residence values will be determined, how primary residence status will be verified, or the specific tax rate homeowners will face.
  • • The proposal reflects mounting pressure from city leadership for greater taxation of ultra-wealthy residents, with Mamdani specifically naming Griffin during the announcement to underscore the measure's intent.
Summary
New York City Mayor Zohran Mamdani unveiled a proposed pied-à-terre tax on luxury second homes during a public announcement this week, standing before a Central Park South limestone tower while naming Citadel CEO Ken Griffin as a primary target. The tax, jointly proposed with New York State Governor Kathy Hochul as part of the state's budget proposal, would impose levies on non-primary residences valued above $5 million.

The tax structure applies broadly to non-primary homes owned by individuals living abroad, in other states, elsewhere within New York State, and investment properties. Importantly, this levy would be assessed in addition to existing property tax obligations, representing a new revenue stream for the state. Officials project the measure would generate approximately $500 million annually, according to statements from both Mamdani's and Hochul's offices.

The announcement singled out several prominent billionaires likely to be affected. Griffin, whose $238 million Midtown penthouse purchase in 2019 represents one of New York City's most expensive residential transactions, was explicitly named. Russian auto dealer Alexander Varshavsky, who acquired a Columbus Circle apartment for $20.5 million in cash, was also mentioned. The broader impact would extend to billionaires including Jeff Bezos and Donald Trump, reflecting the measure's wide net across ultra-high-net-worth individuals maintaining luxury second residences in the city.

However, significant implementation questions remain unresolved. New York officials have not publicly detailed how property values would be determined, the methodology for establishing primary residence status, or the specific tax rate applicable to affected properties. This complexity is heightened by New York City's assessment system: while one-to-three-family homes use market value assessments, condos and co-ops—which comprise the vast majority of New York City apartments—employ a more intricate valuation formula. City Hall has not responded to inquiries regarding these procedural details.

Mamdani characterized the measure as "specifically designed for the richest of the rich," signaling the administration's intent to extract additional revenue from Manhattan's ultra-wealthy property owners while avoiding impacts on middle-income residents. The proposal represents an escalation in New York's tax policy toward concentrated wealth in residential real estate, though its passage and final structure remain dependent on state budget negotiations and clarification of these operational parameters.

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Sources

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Businessinsider Penthouse pieds-à-terre: Bezos, Trump, and other billionaires facing Mamdani's proposed tax