During the initial two-year phase of NYC’s pied-à-terre tax, a covered condominium or cooperative apartment with a Department of Finance market value of $1 million can face a $40,000 annual surcharge. An otherwise comparable apartment valued just below that threshold avoids the surcharge, assuming the same occupancy facts and no applicable exemption.

By Donald Daly | REIS Group
Tax guidance checked November 11, 2026.

A property valuation is an opinion supported by evidence—not a measurement precise to the last dollar. This tax places an unusually large financial consequence on that distinction. For owners and advisers considering real estate tax appeal appraisal support, the first task is identifying the applicable valuation framework, not selecting a desired result.

Why the valuation boundary matters

From an appraiser’s perspective, the central issue is not simply whether expensive second homes should carry an additional tax. It is whether the valuation system can support sharply different treatment of properties whose values may be very close.

The city’s published schedule applies a 4% rate to covered condo and co-op units with DOF market values from $1 million to less than $3 million during property tax years 2026–27 and 2027–28.[1] That boundary creates a substantial difference in carrying costs without necessarily establishing an equally substantial difference between the properties.

A tax threshold is not a valuation conclusion

Consider two hypothetical condominium units:

These examples assume that the units meet the program’s other requirements, have no applicable exemption, and fall within the initial-phase framework. The surcharge is applied to the full qualifying value, rather than only the amount above the threshold.[1][2]

The arithmetic is straightforward. The valuation question is not.

In my view, a one-dollar difference between two valuation conclusions does not establish a meaningful economic difference between the properties. Yet the tax structure can make that dollar extraordinarily consequential.

That is a tax cliff: liability changes abruptly at a prescribed boundary rather than increasing gradually from it. The practical result is a strong incentive for owners near the threshold to examine—and potentially challenge—the city’s valuation.

The city’s market value is not necessarily the likely selling price

One of the most important distinctions for owners is the difference between the DOF market value used for this tax and the price an apartment might command in an arm’s-length sale—a transaction between independent parties acting in their own interests.

For the initial phase, the city uses its existing valuation framework. Condo and co-op values under that framework differ from ordinary sale-price expectations. DOF explains that a condo or co-op carrying a city value of $1 million is generally comparable to a single-family home valued at $5 million or more. That is an administrative comparison, not a reliable conversion formula for an individual apartment.[1][3]

Independent researcher Pablo Loschi, whose analysis appeared in Housing Notes, reports matching 11,794 condominium sales from 2023 through 2025 to the city’s 2026–27 valuations. In his analysis, apartments with DOF values between $900,000 and $1 million had a median sale price of approximately $4.5 million, while those valued between $1 million and $1.1 million had a median sale price of approximately $4.8 million.[4]

These are findings from Loschi’s reported analysis, not an independent calculation performed for this article. His transaction sample concerns condominiums; it should not be presented as a co-op sales study.

The groups are not identical, and group medians do not establish that any particular valuation is incorrect. They do illustrate the problem: properties selling within a broadly similar price range can fall on opposite sides of a substantial annual tax obligation.

For an owner, the questions are separate: What is the apartment likely to sell for, and what value has the city assigned for purposes of this surcharge?

Expect scrutiny near the threshold—not proof of misconduct

The financial incentive to seek a reduction is substantial. At the initial 4% rate, a qualifying unit with a DOF value of $1.05 million would carry a $42,000 annual surcharge. A successful reduction below $1 million could eliminate that surcharge, provided the other relevant facts remain unchanged. DOF identifies the NYC Tax Commission as the avenue for challenging its valuation.[1]

That incentive should not be confused with evidence of improper conduct. An owner has every reason to challenge an unsupported valuation, particularly when the consequences are significant.

From an appraisal standpoint, the objective should remain a credible, supportable conclusion—not a predetermined number selected to produce a preferred tax result. The analysis should explain the property, the applicable valuation framework, the effective date of value, the property rights considered, and the evidence supporting the conclusion.

A likely selling price is not automatically the correct basis for a first-phase challenge. In its final rules, DOF rejected proposals to use sales-price data to rebut or limit first-phase values where those proposals conflicted with the legislatively authorized methodologies.[2] Owners and counsel should establish what evidence is relevant before commissioning an appraisal for a particular proceeding.

Primary-residence exemptions vs. pied-à-terre tax valuation challenges

A valuation challenge concerns the city’s assigned value. A primary-residence exemption concerns how the property is used and whether the relevant occupants and ownership arrangements satisfy the rules.

The surcharge generally does not apply when the property serves as the primary residence of a qualifying owner, tenant, immediate family member, or other eligible occupant. Entity and trust ownership require particular attention. Owning another home does not, by itself, settle whether a particular New York City apartment is taxable under this program.[1][2]

As of November 11, 2026, DOF’s published deadline to apply for a primary-residence exemption for tax year 2026–27—October 13, 2026—has passed.[1] Owners should not assume a new exemption application remains timely; they should review their determination notice and confirm available procedures with DOF, the Tax Commission, or their legal adviser.

DOF also distinguishes between challenging an initial residency determination alongside a valuation challenge and appealing a denial of an exemption. Those procedures should not be treated as interchangeable.[1]

The 2028 transition changes the valuation question

The initial framework is temporary. Beginning July 1, 2028, the law calls for a sales-based valuation approach for condos and co-ops, with a $5 million threshold and a common rate structure across covered property types.[3]

That transition matters because changing the valuation method can change which properties cross the line. An apartment below the initial DOF threshold may not remain below the later sales-based threshold. Conversely, a property subject to the initial surcharge may fall outside the later framework.

The outcome will depend on the valuation methodology and its application—not simply on carrying today’s numbers forward. An actual sale price is relevant evidence, but it should not be assumed to become the city’s future value dollar for dollar.

For owners and their advisers, the practical point is that a conclusion about the initial phase should not automatically be treated as a conclusion about 2028. DOF’s final 2026 rules did not resolve the detailed phase-two methodology.[2]

Comparable sales verification for NYC condo valuations

A sales-based system places greater weight on transaction data. That makes the quality of those records especially important.

Loschi identifies a potential problem in the city’s sales file: transactions in which the same reported consideration appears against multiple condominium units sold together. He reports that 983 of 3,758 condominium records showing prices of $4 million or more were associated with repeated prices on the same block and date, representing 135 bulk transactions.[4]

Those figures come from his reported research. They should not be interpreted as 983 independently verified sales of individual apartments at those prices, nor does a repeated price alone replace a review of the underlying transaction documents.

The appraisal concern is straightforward. A portfolio purchase price is not automatically the sale price of each apartment in the portfolio. Before using a recorded transaction as a comparable, I would want to establish:

• Whether the consideration relates to one unit or several.
• Whether the transaction was arm’s-length.
• Whether the reported amount includes other interests or assets.
• Whether an allocation among units is available and supportable.
• Whether the property rights and transaction conditions are comparable to the subject.

A public-record entry is a starting point for research, not the end of verification. That distinction becomes particularly consequential when sales records help determine an annual tax liability.

Market activity does not yet settle the impact

It is tempting to turn a new tax into an immediate prediction about falling prices or departing buyers. It is equally tempting to point to strong luxury sales and conclude that the tax has no effect. Neither conclusion follows automatically.

Market commentary published alongside Loschi’s research in Housing Notes reports increased newly signed Manhattan contracts at or above $5 million in a June-through-October comparison. That is useful context, but it is not a controlled measurement of the tax’s effect.[4]

Aggregate contract activity does not isolate which properties will owe the surcharge, which buyers expect to qualify for exemptions, or what those buyers would have done without the tax. Timing also matters: DOF states that applicable charges will appear on property tax bills due January 1, 2027. As of November 11, 2026, those first payments have not come due.[1]

My view is that the market effect should be evaluated through evidence over time: verified transactions, negotiations, carrying costs, marketing periods, and differences between taxable and exempt properties. A strong overall market can coexist with a tax affecting particular purchase decisions. Likewise, a slower market would not establish that the surcharge caused the slowdown.

What owners and advisers should gather

Before discussing a valuation assignment, assemble the records that identify the actual issue:

• The DOF notice, determination, and applicable tax bill.
• The property’s city-assigned value and relevant tax year.
• For a co-op, the unit’s shares and available building-level valuation information.
• Property descriptions, floor plans, and records of material condition issues.
• Any transaction documents being offered as valuation evidence.
• The intended proceeding, relevant dates, and instructions from legal counsel.

REIS Group scopes valuation work to the property interest, effective date, intended users, and intended use. For an owner or adviser, stating those requirements at the outset helps distinguish appraisal analysis from legal advice about liability, exemptions, or filing procedures.

FAQ

The appraisal issue is credibility

For property owners, the immediate task is understanding the city’s assigned value, the applicable occupancy rules, and the distinction between an exemption request and a valuation challenge. DOF expressly notes that appearing on its supplemental roll does not, by itself, mean a property owes the surcharge.[1]

For valuation professionals, the larger issue is credibility. A tax system placing substantial liability on one side of a narrow valuation boundary makes sound methodology, verified data, and consistent treatment especially important.

The question is not whether an appraiser can produce a number just below a threshold. It is whether the evidence supports the conclusion—and whether the same standards are applied to the property next door.

To discuss the property, valuation date, and intended use of a proposed assignment, Discuss Your Appraisal Assignment with REIS Group.

This article provides general appraisal commentary, not legal or tax advice. Consult your attorney or tax adviser about liability, exemptions, deadlines, and available remedies. An appraisal does not guarantee a reduction or acceptance by any taxing authority.

Sources and research acknowledgment

This article draws on Pablo Loschi’s analysis and accompanying market commentary published in Housing Notes, NYC Department of Finance guidance, and a published explanation of the law’s phased implementation. Loschi’s transaction counts and statistical findings are attributed to his research and were not independently reproduced for this article. Sources were reviewed November 11, 2026.

1. NYC Department of Finance: Non-primary residence property surcharge. Initial-phase rates, exemptions, challenges, supplemental-roll guidance, and billing.
2. NYC Department of Finance: Final rules relating to the surcharge on certain non-primary residences. Full-value application, occupancy procedures, and valuation-methodology discussion.
3. Holland & Knight: New York State Enacts Pied-à-Terre Tax on Expensive Non-Primary New York City Residences, June 4, 2026. Explanation of the initial phase and scheduled 2028 transition; current DOF guidance controls the administrative details discussed here.
4. Housing Notes: $999,999 Owes Nothing, $1,000,000 Owes $40,000. Pablo Loschi’s guest research and accompanying market commentary published in Housing Notes.

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• Property tax appeal for commercial owners