Renovating in NYC? The Pied-à-Terre Tax Doesn't Care.

Written By Conor O'Byrne

‍Non-Primary Residence Surcharge Notices have been mailed and are currently being received by NYC property owners. But how does this apply to a property under construction?

It's Here: The New Notices Are Hitting New York City Property Owners

Align is seeing this question arise on major residential projects across New York City: if one bought a home to live in, but the property is under construction and cannot yet be occupied, does the new Non-Primary Residence Surcharge still apply?

The answer is not simply a construction answer. It turns on tax status, the January 5 taxable status date, the property’s Certificate of Occupancy posture, and whether the owner can establish either primary-residence treatment or excluded-property status under the new surcharge statute. The default answer: Yes, the tax does apply.

If you have a New York City home under construction right now that cannot be occupied, the City's new Non-Primary Residence Surcharge does not automatically pause for a renovation. In the adopted rulemaking materials, DOF declined to create an exception for owners who intend to occupy a property after renovation or rehabilitation, and confirmed that primary-residence and excluded-property status are evaluated as of the taxable status date. Whether a property is protected therefore depends on its January 5 status, its Certificate of Occupancy, and whether the owner can establish primary-residence treatment or excluded-property status under the statute.

Exclusions do exist. The most pertinent exclusion applies to property for which a required temporary or permanent Certificate of Occupancy has not yet been issued. The statute does not expressly address how that exclusion applies where an earlier CO remains on record while a new or amended CO is pending. Therefore, where a property already has a prior CO (or an I-card in the case of certain older properties) and work is being performed under a major alteration permit, such as an Alt-CO or Alt-1, the path forward becomes complex. That specific issue is likely to be a focus for owners and their advisors in the coming weeks.

This is fundamentally a tax question rather than a design or construction issue, and it is not specifically addressed in the Department of Finance’s published guidance. Where the work is a minor alteration, such as an Alt-2, that does not require a new or amended CO, the CO-based exclusion is unlikely to apply. Many townhouses also carry historical I-cards or COs reflecting two-family occupancy, and simply holding an active major alteration permit does not, by itself, cancel an existing CO.

One possible argument is that, where the permitted scope requires issuance of a new or amended CO before lawful occupancy can resume, the property should be treated as falling within the statutory exclusion until that required CO or TCO is issued. However, this position is not expressly confirmed in DOF’s published guidance and becomes more difficult where an earlier CO remains on record. It may also raise separate financing and lender-consent issues where the project changes the property’s lawful occupancy status or requires a replacement CO.

Background & Timeline

On July 24, 2026, the Department of Finance published the Supplemental Market Value Roll required as part of the surcharge’s implementation and subsequently mailed around 17,000 notices this week. The roll included nearly one million residential properties and was substantially broader than the group expected to owe the surcharge. According to DOF, the roll “includes, but is not limited to,” properties that may be subject to the surcharge. Inclusion on the published roll therefore does not, by itself, establish that a property is taxable. However, the implementation timeline is tight:

  • One to three-family homes and condominiums: Exemption or exclusion documentation must be submitted by August 21, 2026.

  • Cooperative apartments: Owners have until August 24, 2026.

For many owners, the analysis is straightforward: the property either is or is not their primary residence. Plenty of owners intentionally do not establish New York City as their primary residence for independent reasons, ranging from estate planning to avoiding New York State income tax exposure.

However, for those in the middle of a significant renovation, the answer is far less obvious. In the NYC luxury market, properties are frequently acquired with the explicit intent to undergo extensive gut renovations, and major projects routinely span 18 to 36 months before an owner can move in.

The construction scenario was raised during rulemaking. DOF declined to create a contemplated-use exception and confirmed that primary-residence and excluded-property status are determined as of the taxable status date. While a narrow exclusion applies to properties requiring a CO that has not yet been issued, ordinary renovations on existing structures appear to receive no relief under current guidance.

Understanding the New Non-Primary Residence Surcharge

The Non-Primary Residence Surcharge was enacted as part of New York City's Fiscal Year 2026 budget and officially took effect on July 1, 2026. Key mechanics of the tax include:

  • Market Value Assessment: Unlike traditional property taxes, the surcharge is calculated on a property's market value, not its assessed value.

  • Applicability: The surcharge applies to one, two, and three-family homes with a market value exceeding $5 million and to qualifying condominium and cooperative units with a market value exceeding $1 million for fiscal years beginning July 1, 2026 and before July 1, 2028.

  • Exemptions & Exclusions: Beyond the primary residence exemption, exemptions exist for qualifying immediate family occupancy, bona fide one-year leases to qualifying tenants, specialized ownership arrangements, and temporary absences (e.g., medical stays or death). Excluded property includes property for which a temporary or permanent certificate of occupancy is required and has not yet been issued, as well as certain unsold sponsor condominium or cooperative units.

This compressed post-July 24 timeline leaves owners with only weeks to evaluate determinations, gather documentation, and file exemptions. As a result, architects, owner’s representatives, developers, and construction managers are becoming the front-line advisors asked: "We bought this home to live in, but it's currently under renovation - why did we get this notice?"

If your property is subject to the surcharge, charges will appear on your property tax bill that is due January 1, 2027. For official guidance and to review the city's resources, you can visit the NYC DOF Non-Primary Residence Surcharge portal.

The Rulemaking Record and DOF Guidance

During the public comment period, tax attorneys and industry groups raised concerns regarding properties undergoing substantial renovations, noting that purchasers could be unfairly penalized if a unit remained uninhabitable during construction.

The DOF's response was definitive:

  1. Rejection of "Contemplated Use": DOF explicitly rejected a "contemplated use" exception. An owner renovating a home cannot rely on future intended occupancy to establish primary-residence status for the current tax year.

  2. The January 5 Taxable Status Date: The controlling date is January 5. The relevant inquiry is whether, as of that date, the property qualified as a primary residence or as an excluded property under the statute. So the tax due January 1, 2027 is based on the January 5, 2026 status.


    Practical Project Scenarios

  • Scenario 1 (Newly acquired townhouse under Alt-CO renovation): If the property was not used as a qualifying primary residence on January 5, it may be subject to the surcharge unless it independently qualifies as excluded property, including under the provision for a required CO or TCO that has not yet been issued.

  • Scenario 2 (Temporary rental during renovation): Temporary occupancy elsewhere may make it difficult to establish that the property under renovation was the owner’s primary residence on January 5. The owner’s actual primary residence remains a fact-specific tax determination.

  • Scenario 3 (Combined condo units): If the combination requires a new or amended CO that is pending and unissued, an exclusion may apply. If no new CO is required, the units are taxed as non-primary residences.

The Legal Dilemma: Can You Terminate an Existing CO?

If an Alt-CO or major alteration project relies on claiming the property currently has "no effective Certificate of Occupancy," a legal obstacle arises. We have not identified a current published DOB procedure under which filing or obtaining a demolition permit automatically revokes an existing CO.

DOB’s former OPPN 16/87 directed applications to revoke or modify certificates of occupancy through the Department’s General Counsel for referral to the Board of Standards and Appeals. Although that notice has been rescinded and does not establish current procedure, it indicates that DOB historically treated CO revocation as a separate administrative action rather than an automatic consequence of demolition permitting.  

NYC Administrative Code § 28-118.17 cuts against the idea that an existing final Certificate of Occupancy disappears automatically during construction. The statute establishes a separate formal path for revocation, vacation, or modification: the DOB Commissioner must request, in writing, that the Board of Standards and Appeals or a court of competent jurisdiction take that action. The grounds are also limited: issuance in error, reliance on incorrect information provided to DOB, or a nonconforming use that is no longer permitted under the Zoning Resolution. In other words, absent a separate revocation, vacation, or modification, § 28-118.17 does not support the conclusion that a demolition permit, interior demolition, Alt-CO, or major alteration filing automatically terminates an existing final CO.

The facts create questions for project teams:

  • Is a full demolition permit required, or is interior demolition under an alteration permit sufficient?

  • Does obtaining a "Letter of Completion" LOC for demolition or partial demolition have any effect on a prior CO, or is separate DOB confirmation required?

  • Must an owner formally request written confirmation from the DOB that a prior CO is no longer effective?

  • The Financing Risk: If a demolition filing successfully voids an old CO, does that default the owner's mortgage or invalidate the collateral package pledged to the lender?

Appealing the Assessed Market Value

What if you concede that the property is a non-primary residence, but you dispute the financial baseline used to calculate the tax? The Non-Primary Residence Surcharge is based on the property's market value as determined by the DOF on the Supplemental Market Value Roll.

An owner who accepts that a property is not being used as a primary residence may still challenge the market value used to calculate the surcharge. That challenge is filed with the New York City Tax Commission using the surcharge-specific appeal process. The Tax Commission has published Form TC107 and related instructions for Non-Primary Residence Surcharge appeals. The Tax Commission’s TC107 process allows an owner to challenge surcharge value and certain legal grounds, including DOF’s initial or final primary-residence determination, threshold applicability, and covered-versus-excluded property status. Owners should be careful not to confuse this with an ordinary assessed-value protest, because TC107 expressly cannot be used to protest assessed value.

The Tax Commission may also review whether a property qualifies for the primary-residence exemption. Because the DOF exemption process and the Tax Commission TC107 process are separate procedural routes, owners should decide carefully whether they are challenging value, primary-residence status, covered-versus-excluded status, or a DOF denial. An owner whose DOF exemption application is denied may subsequently appeal that determination to the Tax Commission.

Accordingly, owners and their advisors should determine the appropriate procedural route before filing. A challenge to market value, an initial exemption application to DOF, and an appeal from a DOF denial are related but distinct proceedings, with different filing requirements and potential strategic consequences. Specialized property tax counsel should be consulted before selecting a forum or filing position.

What Owners and Project Teams Should Do Now

  1. Do Not Ignore the Notice: A notice indicates that DOF has identified the property as potentially subject to the surcharge and requires the owner to establish any applicable exemption or exclusion by the stated deadline. It is not necessarily a final determination that the surcharge is owed. Take immediate action ahead of the August 21 or August 24 deadlines.

  2. Engage Tax Counsel Immediately: Tax planning for renovations can no longer be treated purely as an administrative filing. Tax counsel must be brought in early to coordinate with DOB expeditors, architects, and lenders.

  3. Anchor Timelines to January 5: Build a clear chronological timeline linking project acquisition, DOB filing dates, permit issuances, TCO/CO target dates, and actual physical move-in dates.

  4. Evaluate Entity Ownership Structures: Properties held in LLCs, trusts, or other vehicles require extensive documentation demonstrating the relationship between the entity, majority owners/beneficiaries, and the individual claiming primary occupancy.

Conclusion

The NYC Non-Primary Residence Surcharge is a major shift in city property taxation. For the residential development and design community, the DOF’s stance is clear: construction timelines carry direct, immediate tax consequences.

Absent a required, unissued Certificate of Occupancy, properties under renovation may be treated as non-primary residences if they do not qualify as a primary residence of a covered owner, immediate family member, or qualifying tenant as of January 5, and do not otherwise qualify as excluded property. Anticipating these milestone risks alongside financing, zoning, and landmark approvals is now essential for delivering successful residential projects.

This paper is an informational resource published by Align Owner Representation and does not constitute legal or tax advice. Owners should consult qualified New York tax counsel regarding their specific circumstances.

About Align Owner Representation

Align is a Manhattan-based owner representation and project management firm focused on complex residential construction and renovation projects. The firm is retained for assignments that demand experienced judgment, close coordination, and active leadership - not simply administrative project management. Working directly for owners, Align manages design, budgeting, procurement, permitting, construction, and risk while coordinating the broader team to protect the owner's interests from concept through completion.

The Non-Primary Residence Surcharge is a useful example of why major residential projects cannot be managed solely as construction exercises. Tax status, certificate-of-occupancy strategy, financing requirements, project sequencing, and actual occupancy can now intersect in ways that materially affect an owner’s position. Align works with architects, attorneys, tax advisors, expediters, lenders, and contractors to identify those issues early and keep the project team aligned around them.

For more information, contact Align Owner Representation at align@aownersrep.com.

Sources & Citations:


Conor O'Byrne
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