New York City’s non-primary residence surcharge is now in effect, and the stakes are significant for owners of high-value NYC homes, condos, and co-ops that are not primary residences.

Tax Law § 1350 imposes the surcharge on “covered property” (and residential cooperative dwelling units) that the Department of Finance (DOF) determines is not used as a “primary residence” and meets specified market-value thresholds. For 2026–27 and 2027–28, thresholds generally are $5 million for one-, two-, and three-family homes and $1 million for condominium and cooperative units; rates range from 0.8% to 1.3% for Class 1 properties and 4% to 6.5% for qualifying condo and co-op units.
The “primary residence” surcharge exemption has two pathways: Owner/Family Occupancy and Lessee Occupancy.  

Pathway 1 (Owner/Family Occupancy): 

Use of the property as a primary residence of “one or more of the covered owners, or an immediate family member of one or more of the covered owners, provided such covered owners are natural persons.”  “Immediate family member” is defined to include a spouse, child, sibling, parent, grandparent, or grandchild.   

Pathway 2 (Lessee Occupancy): 

Use of the property as a primary residence of “one or more lessees, and any sub-lessees to which a lessee has sublet . . . pursuant to subdivision two of section two hundred twenty-six-b of the real property law, provided any such lessee or sub-lessee is a natural person occupying such covered property . . . pursuant to a bona fide lease agreement negotiated in an arm's-length transaction with a term of not less than one year.” 

The market response to the surcharge has been swift and dramatic. As reported by The Jewish Voice in September 2026, Manhattan’s luxury rental market has experienced an “unprecedented surge” in leasing activity, with the number of residential units commanding monthly rents in excess of $100,000 increasing sevenfold compared to 2025 figures.  Industry executives attribute this migration directly to the surcharge. Gary Malin, Chief Operating Officer of the Corcoran Group, explained: “There are New York homeowners who’ve opted to lease out their luxury properties to avoid the pending pied-à-terre tax, thus increasing the pool of high-end rentals.” 

Wealthy individuals who possess the financial capacity to purchase $20 million to $50 million trophy residences are instead electing to lease, executing what The Jewish Voice characterized as a “calculated defensive strategy.” 

This shift has raised a critical question for apartment owners: whether and to what extent must the owner police whether its uber-wealthy tenant actually primarily resides in that apartment.

The Owner's Duty to Investigate or Monitor

The short answer is that the final DOF rules do not impose an express, affirmative duty on the owner to investigate or continuously monitor the lessee’s primary-residence use.

Tax Law § 1352 requires DOF to make an annual determination that a covered property is not a primary residence, considering whether a covered owner occupied it in aggregate for a majority of days during a calendar year.  Owners may submit proof, including evidence that the property is the primary residence of one or more lessees or sub-lessees. 

The statute describes the lessee and lease but does not expressly require an owner to inspect the apartment, verify tax filings, or police day-to-day use. Yet the owner claims the exemption and must support it for DOF, leaving open whether a truthful, reasonably supported claim suffices or independent investigation is required.

That uncertainty matters because Tax Law § 1354(e)(2) authorizes penalties of up to 50% of the surcharge where DOF determines that a certification or documentation contains inaccurate or misleading information material to the determination and was submitted negligently or in bad faith.  The DOF Commissioner may also subpoena testimony and documents. 

DOF’s Statement of Basis and Purpose addressed commenters’ concern that owners might lack adequate documentation from lessees or sublessees or that a lessee might not use the property as a primary residence: “these matters must be resolved between private parties and will not be addressed in these rules.”

That response is difficult to reconcile with mandatory monitoring: it leaves tenant cooperation and actual-use disputes to private parties rather than prescribing inspections, recurring certifications, or continuous oversight.

The exemption is “self-executing” only as to timing. Under 19 RCNY § 62-08, DOF evaluates whether the property is used as a primary residence as of the applicable taxable status date, not under an owner-monitoring program.

Nor does self-executing mean one-time or automatic. Under § 62-06(a), DOF makes an initial non-primary-residence determination annually for qualifying properties; an appealing owner must certify the exemption and submit proof of the lessee’s primary residence for that year. DOF did not adopt a streamlined multi-year renewal process; it said it would “consider” one as the surcharge is implemented. Until then, prior approval does not eliminate the need for annual proof.

The proof burden creates practical diligence pressure. Section 62-06(b) specifies the proof for lessee primary residency. A standard lease requires an unexpired lease or sub-lease entered into through an arm’s-length transaction plus at least one additional rental document; a month-to-month arrangement requires affidavits from the owner and lessee or sub-lessee confirming arm’s-length terms plus at least two additional rental documents.

“Additional rental documents” include a utility bill in the lessee’s or sub-lessee’s name issued within one year before submission, an unexpired renter’s insurance policy, or proof of rent paid to the owner.

The appeal also requires proof that the individual treats the property as a primary residence: a recent state or federal income tax return, or two or more listed documents such as an identification card, voter identification card, or other acceptable proof of residency or occupancy.

Thus, diligence pressure comes from the owner’s burden to claim and defend the exemption—not a freestanding monitoring mandate: the rules specify proof for DOF, not how the owner must supervise the tenant’s life.

DOF nevertheless has meaningful enforcement tools. Section 62-04(a) authorizes audits of the surcharge, primary-residence determination, and submitted certifications or documentation within six years of submission; DOF may collect records and subpoena witnesses, books, papers, and documents.

Risk Allocation

The surcharge is imposed on the property, not a particular owner. Under Admin. Code §§ 11-3202 and 11-3205(b), the surcharge, penalties, and interest constitute a lien on the property that survives a change in ownership.

The penalty rule is not strict owner liability. Under § 62-04(c), it applies when certification or documentation submitted to DOF contains information material to the surcharge or primary-residence determination that is inaccurate or misleading and was submitted negligently or in bad faith.

For a full exemption, the penalty is 50% of the surcharge, and the surcharge is reinstated. For a lower valuation, it is 300% of the resulting surcharge difference, capped at 50% of the otherwise applicable surcharge.

A tenant’s falsity does not automatically prove owner negligence or bad faith. But ignoring red flags, submitting unsupported documents, or certifying beyond the owner’s knowledge can create exposure when the submission is material, inaccurate, and misleading.

The owner remains DOF’s point of contact: it files the claim, receives notices and penalties, and bears the lien; the lessee’s conduct may inform the facts but does not shift DOF’s claim off the property.

Recourse against a misrepresenting lessee is ordinarily private—lease covenants, indemnification, security, and other contract remedies—consistent with DOF’s decision to leave documentation disputes to the parties.

DOF also suggested contractual allocation: parties may allocate retroactive-surcharge risk in real-property documents, and co-ops may amend proprietary leases to allocate § 11-3205(f) liability.

Those provisions cannot bind DOF or eliminate the lien, but they can allocate economic consequences and provide the owner a remedy if the representation proves false.

If facts do not support the exemption, § 62-06(f) lets an owner disclose in writing that the property—or, for a cooperative, the residential cooperative dwelling unit—does not serve as a primary residence, confirming that claiming the exemption is an owner decision, not proof to manufacture.

Practical Implications

The absence of an express duty does not make diligence optional as risk management. The measures below support a claim but are not a legally mandated monitoring program.

The owner’s objective is a credible contractual representation, preserved proof, and a record showing the owner did not submit information negligently or in bad faith—not an investigation into every aspect of the tenant’s life.

Related-party leases warrant special care because arm’s-length status is part of the exemption; the checklist is risk management, not an extra statutory element.

•    Use a written lease representing and warranting that the unit is—and will remain at the relevant taxable status date—the tenant’s primary residence.
•    Require covenants to maintain and provide documents required under § 62-06(b), including additional rental documents and, when applicable, month-to-month affidavits.
•    Add estoppel or annual recertification and prompt notice of any status change, expressly as contractual protections rather than DOF-mandated monitoring.
•    Allocate surcharge risk by indemnification and surcharge-shifting provisions; consider a deposit, letter of credit, or other security for retroactive liability.
•    For related-party leases, document fair-market rent, actual payment, independent dealing, separate records, and a legitimate business or investment purpose beyond avoiding the surcharge.
•    Preserve one file of rent analyses or appraisals, lease negotiations, entity and ownership records, bank and payment records, occupancy evidence, tenant certifications, supporting materials and communications, and all DOF submissions; distinguish owner knowledge from tenant representations and avoid over-certifying.
•    Before filing, resolve or disclose red flags, including unpaid rent, inconsistent addresses, vacancy, short-term use, or other facts inconsistent with primary residence.
•    Calendar the taxable status date, DOF’s annual notice, appeal deadline, and document-collection process; do not assume a prior determination carries forward.
•    For co-ops, align proprietary-lease and house procedures with § 11-3205(f) to allocate responsibility for any surcharge attributable to a unit.

These measures support cooperation, preserve proof, allocate economic risk, and show a reasonable filing basis; they do not require surveillance or independent verification of every tenant statement.

Conclusion

The current state of the law is straightforward on the central point: there is no express statutory or regulatory duty requiring a property owner to police whether a lessee actually uses the apartment as a primary residence.

But the absence of an express duty is not the absence of risk. Annual DOF determinations, an owner-borne proof burden, the property lien, audit powers, and negligence-or-bad-faith penalties create strong practical incentives for owner diligence.

Important questions remain open: whether DOF will adopt streamlined multi-year renewal, what level of owner diligence could support or defeat a negligence finding, and how future administrative decisions or reported caselaw will treat disputed tenant representations. For now, no tested case law or administrative ruling supplies the missing standard.

Treat the tenant’s representation as a starting point, not a free pass: use the lease to allocate risk, collect the proof § 62-06(b) requires, preserve the record, and reassess the facts each taxable year. That is prudent owner diligence—not a monitoring duty the final rules expressly impose.