On April 15, New York Mayor Zohran Mamdani stood in front of Citadel CEO Ken Griffin's $238 million apartment building and proposed a pied-à-terre tax. The video went viral. Griffin called it poor taste. Brokers predicted a wealth exodus.
Four weeks later, the data tells a different story. Between April 14 and May 10, 133 contracts were signed for Manhattan apartments priced at $4 million or more, per Olshan Realty. That is up from 130 in the same period last year. Total dollar volume hit $1.12 billion, a 10% increase.
The surge is concentrated at the top. Contracts for units above $10 million jumped 80% year-over-year to 34. Buyers are not waiting. They are signing.
Donna Olshan, president of Olshan Realty, put it bluntly: the proposed tax has had no effect on the luxury market. That statement is a direct challenge to the narrative pushed by Corcoran Group CEO Pamela Liebman, who told The Real Deal that deals above $30 million have been put on pause.
The contradiction matters. If Liebman is correct, the Olshan data captures a temporary flurry before a freeze. If Olshan is correct, the tax is a political gesture that wealthy buyers are pricing in as a cost of doing business in New York.
The tax, co-proposed by Mamdani and Governor Kathy Hochul, would impose an annual levy on non-primary residences valued at $5 million or more. Mamdani projects $500 million in annual revenue. The mechanics are untested. New York's assessment system values properties far below market—Griffin's $238 million apartment is assessed at $6.99 million. Implementation will require a separate valuation framework.
Griffin has already signaled his response. In a CNBC interview last week, he said Citadel will expand its Miami workforce over the next decade as an immediate and direct consequence of the mayor's video. That is not a threat. It is a capital allocation decision.
The broader question is whether the tax changes behavior at the margin or triggers a structural shift. The Olshan data suggests the former. High-net-worth buyers are not price-sensitive to an annual levy when they are paying $10 million to $238 million for an apartment. The tax is a rounding error.
But the tax is not the only variable. The rate environment is shifting. SOFR has remained elevated. Debt costs for jumbo mortgages and portfolio loans are higher than in 2021. Buyers who are signing now are doing so with expensive capital.
That suggests the buyer base is not leveraged speculators but liquid family offices and institutional capital. These buyers do not flinch at a tax. They flinch at illiquidity and regulatory uncertainty. The tax is uncertain but finite. The market is pricing it in.
The real risk is not the tax itself but the signal it sends about New York's political posture toward wealth. Griffin's Miami expansion is a data point. If other large employers follow, the demand base for luxury real estate narrows. The tax becomes a self-fulfilling prophecy.
For now, the market is testing that thesis. 34 contracts above $10 million in four weeks is a vote of confidence. The question is whether those buyers are buying before the door closes—or because they believe it will stay open.