J-51 and J-51 Reform Tax Abatement Services in NYC

J-51 is now two programs under one name. The original J-51, an as-of-right exemption and abatement for residential rehabilitation, expired for work completed after June 29, 2022, but existing benefits can continue under their approved schedules and compliance conditions. Its successor, the J-51 Reform program known as J-51 R, is accepting applications right now for eligible work completed on or before June 29, 2026, on a filing clock that starts at completion. MGNY Consulting reviews existing J-51 benefits and assists with J-51 R applications and supporting records.

Review the project dates before relying on a benefit. Call (212) 343-1111 with the work description, commencement and completion dates, building type and any existing HPD certificate.

Program status checked September 14, 2026: HPD says the authorized J-51 R extension still requires City Council enactment. The pending extension is not treated as an open filing route for later-completed work.

What was the original J-51 benefit?

Two things at once, which is why “J-51 tax abatement” (also written J51 tax abatement) is the everyday name for a benefit that was formally an exemption and an abatement together. An abatement reduced the building’s existing real estate taxes by up to 8 1/3 percent or 12 1/2 percent of the certified cost of the work each year, for up to 20 years. An exemption kept the increase in assessed value resulting from the work off the taxable roll, for 14 years (10 full plus a 4-year phase-out) under one standard schedule, or 34 years (30 plus 4) under the longer schedule generally available to affordable housing. The applicable approval and financing conditions determine the benefits. HPD issued the Certificate of Eligibility and the Department of Finance implemented the benefit, the same division of labor the City still uses.

Did the original J-51 expire?

Yes. The statutory deadline for completion of eligible work was June 29, 2022, and HPD does not accept applications for work completed after that date. An existing approval can continue for its scheduled term, subject to the program’s conditions, including applicable rent regulation. New rehabilitation work looks to J-51 R.

What is J-51 R, the reform program?

J-51 R, governed by RPTL Section 489(21) and Administrative Code Section 11-243.2, abates existing real property taxes by up to 8 1/3 percent of the certified reasonable cost of the work each year, for up to 20 years, capped at 70 percent of that certified cost in total. There is no exemption leg; J-51 R is abatement only.

Eligible work must appear on the certified reasonable cost schedule, meet a minimum of $1,500 per dwelling unit, be completed after June 29, 2022 and before June 30, 2026, take no more than 30 months from commencement, and add no cubic content to the building.

Eligible buildings must meet the applicable Class A multiple-dwelling and non-hotel conditions. Rental buildings may qualify when at least half the units are affordable, with rents at or below 30 percent of 80 percent AMI and registered with DHCR, or when the building is owned and operated by a qualifying Mitchell-Lama limited-profit or redevelopment company, or receives substantial governmental assistance. Co-ops and condominiums may qualify with an average assessed valuation of no more than $45,000 per dwelling unit at commencement. Mitchell-Lama mutual and Article V redevelopment homeownership companies qualify as their own category.

The State Legislature has authorized an extension through mid-2036; until the City Council enacts it, work completed after June 29, 2026 cannot yet be filed. For work completed after that cutoff, preserve the project records and follow the City’s enactment and HPD instructions.

Which J-51 record needs attention?

When must a J-51 R application be filed?

For qualifying work completed after December 30, 2024, HPD requires filing within four months of completion. Earlier completed projects had an April 30, 2025 deadline. Pre-commencement notice requirements apply to work commenced on or after December 30, 2024: ordinarily the Notice of Intent is due at least 15 days before work, and tenant notice must be provided and posted 30 to 180 days before work. HPD describes limited emergency and transitional exceptions. These notice requirements do not apply to projects commenced on or before December 29, 2024.

The application itself is electronic, with notarized affidavits mailed to HPD, and the file is substantial: the J-51 R workbook, a CPA statement supporting claimed construction costs, applicable permits and DOB-approved plans, required violation-clearance records, and, for rentals, the DHCR rent registration and the owner’s permanent waiver of the MCI rent increase for the work. The fee is $1,000 plus $75 for each dwelling unit beyond six, paid by wire or ACH.

What do the benefits mean for rents?

The original J-51 placed every rental unit under rent stabilization or rent control for the duration of the benefits, with the MCI increase reduced during the abatement. Under J-51 R, qualifying rental units remain rent stabilized for at least the program’s restriction period, and the owner permanently waives the MCI increase for the assisted work. The fate of a unit when benefits end depends on the building’s regulatory status and its notice history, and that review belongs in the file before the benefit is claimed, not after it expires.

What should owners prepare for the review?

• The scope of work, construction dates, plans and permit records.
• Any Notice of Intent and tenant notices already submitted.
• Cost records and the CPA documentation needed for the application.
• The building’s rent-registration record or homeownership documents, as applicable.
• Existing HPD certificates and current tax bills if reviewing a benefit already in place.

For an existing benefit approaching its end, use property tax projections to plan the budget. Coordinate rental records with DHCR registration and compliance and rent stabilized lease management.

How does MGNY handle J-51 and J-51 R?

For buildings holding original J-51 benefits, we track the exemption and abatement schedules, confirm the Department of Finance is implementing them correctly, and review missing benefits through our reinstatement of benefits practice. For J-51 R candidates, discuss eligibility, any applicable notice requirements, the cost schedule, CPA documentation and the filing deadline with us. Co-op and condo boards considering the coop and condo abatement can ask how the existing benefit affects a J-51 review. Call (212) 343-1111 with the work dates and current benefit records.

Check the current filing instructions: HPD J-51 Reform eligibility, notices and application requirements. The dated status above separates current eligibility from the proposed extension.

Frequently asked questions about J-51

Is J-51 still available in NYC?

As of September 14, 2026, HPD accepts J-51 R applications for eligible work completed on or before June 29, 2026, subject to the applicable filing deadline. Work completed after that date remains ineligible until the City enacts an extension. The original J-51 program is closed to work completed after June 29, 2022.

How long does a J-51 abatement last?

Under the original program, the abatement runs up to 20 years. The exemption runs 14 or 34 years, including a four-year phase-out. Under J-51 R, the abatement runs up to 20 years or until it has returned 70 percent of the certified reasonable cost, whichever comes first.

What happens when a J-51 abatement expires?

The J-51 abatement stops reducing the tax bill when its approved term ends. The amount then payable depends on the assessment, tax rate and any other applicable benefits, so the expiration year belongs in the budget and underwriting model. The rent consequences for individual units depend on the building’s regulatory status and the notices given, and are worth reviewing well before the final benefit year.

What is the difference between J-51 and J-51 R?

The original paired an exemption with an abatement and covered work completed through June 29, 2022. J-51 R is abatement only, capped at 70 percent of certified cost, covers work completed after that date and before June 30, 2026, sets a $1,500 per unit minimum, and conditions rental eligibility on affordability, Mitchell-Lama status or substantial government assistance.

Does J-51 R require rent stabilization?

Applicable rental units must remain subject to rent stabilization for at least the J-51 R restriction period, and the owner permanently waives the MCI increase for the assisted work. Rental applications require DHCR registration records. Homeownership applications have different supporting records, including an opinion of counsel where required.

The scope of the old program, why it lapsed, and what replaced it in 2024 are explained in what J-51 is.

All Property Tax Services