Why does DOF market value differ so sharply from sale price?
The surcharge base is the Department of Finance's market value, not the property's purchase price. For condominium units DOF applies a comparable-rental-income methodology under the rules adopted for the surcharge, consistent with the special real-property-tax treatment of condominium and cooperative property under RPTL § 581.
That explains the gap. A penthouse that trades for $238 million can carry a DOF market value of $15.6 million because the tax calculation is tied to the administratively determined value produced under the property-tax valuation framework, not to the buyer's negotiated price.
What do the documented trophy sales show?
At 220 Central Park South, Unit 50, the January 2019 sale price was $238 million. DOF's market value is $15,553,855—approximately 6.5 cents per dollar of sale price. The annual surcharge is $1,011,001, according to Conquest's analysis of DOF's July 2026 Supplemental Market Value Roll.
At 220 Central Park South, Unit 32A, the February 3, 2026 sale closed at $37,250,000 (ACRIS instrument 2026020900864001). DOF's market value is $2,402,920, again approximately 6.5 cents per dollar. The annual surcharge is $96,117.
For 15 Central Park West PH39, the sale price was $45 million and DOF's market value is $4.35 million—approximately 9.7 cents per dollar.
Does the surcharge apply to the full DOF market value or only the excess above the threshold?
The surcharge is flat, not marginal. Once DOF market value clears the threshold, the bracket rate applies to the full market value, not only the portion above the threshold.
For a condominium unit valued at $15.6 million, the 6.5 percent rate applies to the entire $15.6 million. There is no carve-out for the first $5 million.
What happens in Phase 2 when DOF revalues condominiums on comparable sales?
From July 1, 2028, DOF will revalue condominium and cooperative units toward the $5 million threshold and 0.8–1.3 percent rate schedule that currently applies only to one- to three-family houses. The adopted rules state that Phase 2 market values will be based on comparable sales rather than rental income.
The Unit 50 owner, for example, would face revaluation from $15.6 million toward a figure closer to the $238 million sale price. If DOF's Phase 2 market value reaches $238 million, the surcharge would jump from $1,011,001 to $3,094,000 annually at the 1.3 percent top rate.
No owner should assume the Phase 1 rental-income valuation will persist. The statute requires the shift to sales-based valuation, and DOF has published no carve-out for properties already on the roll.
How do I know whether my property is subject to the surcharge?
Inclusion on DOF's supplemental market-value roll does not mean the property is subject to the surcharge. DOF transmits direct notice to owners it believes may be covered, and owners have 30 days from the notice's transmission date to appeal.
For tax year 2026–27, DOF was required to mail notices no later than August 30, 2026. The exemption-application deadline was extended to October 13, 2026 (from October 6, which superseded September 18, August 24, and August 21).
If you did not receive a notice and believe your property qualifies for an exemption—because it is your primary residence, an immediate family member's primary residence, or occupied by a 12-month arm's-length tenant—you may still file an appeal within 30 days after the surcharge appears on the assessment roll.
What is the current legal status of the surcharge?
A state-court ruling issued October 1, 2026 reportedly found that the City's implementation improperly shifted burdens to homeowners. The City filed a notice of appeal the same day.
Earlier emergency proceedings produced a temporary restraining order on August 10, 2026, which an appellate court lifted on August 13, 2026, permitting the City to proceed with collection. Oral argument on the City's motion to dismiss occurred August 31, 2026.
Because the City's appeal is pending, the legal status of the October 1 ruling and the ultimate validity of the challenged implementation remain unsettled. The surcharge has not been finally invalidated, and collection has not ceased.
Where can I check my property's DOF market value and estimated surcharge?
Conquest maintains a free DOF market-value and surcharge checker at piedaterretax.nyc. Enter your address to see the DOF market value DOF will use to calculate the surcharge, the applicable rate, and the annual bill if the property is determined to be non-primary.
The tool draws from DOF's July 2026 Supplemental Market Value Roll and reflects the Phase 1 rates and thresholds in effect through June 30, 2028. It is not legal or tax advice, and it does not determine whether your property qualifies for an exemption.
Frequently asked questions
Is my penthouse taxed on the sale price or the DOF market value?
The surcharge base is the Department of Finance's market value, not the property's purchase price. For condominium units DOF applies a comparable-rental-income methodology under the rules adopted for the surcharge, which explains why a penthouse that trades for $238 million can carry a DOF market value of only $15.6 million.
Does the pied-à-terre tax apply only to the amount above $5 million?
The surcharge is flat, not marginal—once DOF market value clears the threshold, the bracket rate applies to the full market value, not only the portion above the threshold. For a condominium unit valued at $15.6 million, the 6.5 percent rate applies to the entire $15.6 million with no carve-out for the first $5 million.
Will my DOF market value change when the city switches to sales-based valuation in 2028?
From July 1, 2028, DOF will revalue condominium and cooperative units based on comparable sales rather than rental income, and no carve-out for properties already on the roll has been published. If your unit sold for $238 million but currently carries a $15.6 million DOF market value, the Phase 2 revaluation could push the market value toward the sale price and increase the annual surcharge from approximately $1 million to over $3 million.