New York City's 467-m tax abatement is the single most important policy lever supporting the current wave of office-to-residential conversion. It replaced 421-g for most modern conversions, extended the geographic eligibility well beyond Lower Manhattan, and locked in a 35-year property-tax benefit schedule that makes otherwise marginal deals pencil. For developers underwriting conversion acquisitions today, understanding 467-m is not optional — it is the difference between a transaction that closes and one that dies in committee. Skyline Properties has structured conversion sales — including 6 East 43rd Street ($135M, Vanbarton Group, 441 units, 111 affordable, $300M Brookfield construction loan) and 101 Greenwich Street ($105M, Metro Loft / Nathan Berman) — where the 467-m abatement schedule was central to buyer underwriting and final pricing. This article walks through how 467-m actually works, who qualifies, how the abatement is calculated and applied, the affordable-unit obligations, and the operational realities of administering the program.
What 467-m actually is, and what it replaced
467-m is a New York Real Property Tax Law section enacted as part of the FY2025 state budget to incentivize the conversion of commercial buildings — primarily obsolete office — into rental housing. It functions as a long-term property-tax abatement: in exchange for delivering a defined share of permanently affordable units, the developer receives a stepped reduction of the building's real estate tax bill on the residential portion for thirty-five years following conversion.
The program is the practical successor to 421-g, the 1990s-era Lower Manhattan conversion abatement that drove the first large wave of FiDi office-to-residential conversions. 421-g had narrow geography (south of Murray Street/City Hall), did not require affordability, and sunset years ago for new applicants. 467-m is broader in geography, longer in benefit, and explicitly conditioned on affordable housing. It also coexists with City of Yes for Housing Opportunity zoning reforms that expand the universe of buildings physically permitted to convert.
For developers, the practical effect is that 467-m has become the default abatement assumption for any Manhattan office conversion underwritten in 2025 and beyond. Skyline Properties' active conversion mandates are universally priced with 467-m incorporated into buyer NPV.
Eligibility — geography, building type, and conversion threshold
467-m eligibility turns on three primary tests: where the building sits, what it was before conversion, and how much of it converts.
- Geography — eligible across most of Manhattan south of 96th Street, plus designated outer-borough commercial districts; the most generous benefit tiers are concentrated in core Manhattan submarkets where conversion supply is most active.
- Pre-conversion use — buildings must have been used predominantly for non-residential purposes (office, hotel, certain commercial) for a defined lookback period prior to the conversion application; pure ground-up residential and prior-residential rehab do not qualify.
- Conversion threshold — the project must result in a substantial conversion of the non-residential building to residential use; partial conversions of only a few floors generally do not meet the threshold.
- Construction commencement and completion deadlines — applicants must commence construction by defined dates and complete within a defined window to preserve the full benefit schedule; missing these dates compresses or eliminates the abatement.
- Affordable-unit set-aside — at least 25% of dwelling units must be permanently affordable to households at HPD-defined income tiers, with average and deepest-tier requirements specified in the statute and HPD rules.
The 35-year benefit schedule, in plain English
467-m's headline benefit is a 35-year property-tax abatement on the residential portion of the converted building. The schedule is stepped: a long initial period of substantial (often near-full) abatement, followed by a phase-out where the abatement steps down annually until the building returns to its as-of-right tax bill. The exact percentages and step-down years vary by tier and submarket and are spelled out in the implementing legislation and HPD rules.
The economic significance is twofold. First, the early years of the abatement coincide with lease-up and initial stabilization, when residential cashflow is most fragile — meaningful tax relief during this window dramatically improves debt service coverage and lender comfort. Second, the long tail of partial abatement extends well into stabilized operations, supporting refinance proceeds and exit cap-rate compression.
When Skyline models 467-m value for conversion buyers, the present-value of the 35-year benefit at a 7–9% discount rate typically lands in the 15–25% of stabilized building value range. On a $300M stabilized residential asset, that is $45–75M of value created by the abatement alone — frequently larger than total developer equity in the deal.
The affordable-unit obligation — what 25% really means
The 25% affordable-unit set-aside is not a single AMI band. It is a blended affordability requirement administered by HPD, with a defined average AMI and a defined deepest-tier minimum. In practice, developers will deliver a mix — for example, some units at 40% AMI, some at 60%, some at 80%, blended to the statutory average. The exact mix is negotiated with HPD as part of the regulatory agreement.
Several operational realities flow from this. Affordable units must be physically comparable to market-rate units in finish, size mix, and amenity access — HPD will not approve plans that ghetto-ize affordable units onto inferior floors. Marketing of affordable units runs through HPD's housing lottery system (Housing Connect), which adds 6–12 months of lease-up timing for the affordable component. And the regulatory agreement runs with the land — affordable obligations survive sale and refinance and bind successor owners.
Buyers underwriting 467-m projects must therefore treat the affordable component as a permanent operational obligation, not a one-time cost. This affects everything from property management staffing (compliance reporting is meaningful) to exit-cap underwriting (lenders and buyers of stabilized 467-m assets discount affordable cashflow appropriately).
Application process and timing
467-m applications run through HPD with parallel filings at DOF for the abatement implementation. The practical sequence on a typical Skyline-brokered conversion runs roughly as follows:
- Pre-acquisition — buyer and counsel confirm eligibility (geography, pre-conversion use, construction feasibility within deadlines) and model abatement NPV into the acquisition bid.
- Closing and design — full construction documents are produced reflecting the affordable-unit mix, HPD-comparable finishes, and code-compliant unit layouts.
- Application filing — formal 467-m application with HPD prior to construction commencement, including the affordable plan and the proposed regulatory agreement.
- Construction commencement — buyer must satisfy the statutory commencement deadline; this is one of the most common failure points and requires disciplined sequencing of demolition permits, financing close, and DOB filings.
- Construction and lease-up — physical conversion proceeds; affordable units are marketed through HPD Housing Connect; market-rate units lease conventionally.
- Abatement commencement — once HPD certifies completion and the regulatory agreement is recorded, DOF implements the abatement schedule against the building's assessed value.
Marketing and operations (M&O) obligations
Beyond the affordable-unit set-aside, 467-m imposes ongoing marketing and operational obligations on the building. These include compliance with HPD's affordable marketing rules (lottery, preference categories, anti-discrimination), annual income recertification of affordable tenants, restrictions on rent increases for the affordable units, and reporting to HPD on the affordable component's operations.
Operationally, this means a 467-m building runs partially as a market-rate rental and partially as a regulated affordable building, with the regulated portion subject to substantially the same compliance regime as LIHTC or 421-a affordable housing. Property managers handling 467-m assets need affordable-housing compliance competence; this is meaningfully more involved than free-market multifamily property management.
Failure to comply with M&O obligations can result in suspension or revocation of the abatement — a catastrophic outcome that completely repositions the building's value. Buyers and lenders treat M&O compliance with the same seriousness as debt service.
How Skyline structures conversion sales around 467-m
Skyline Properties' conversion brokerage practice — led by Robert Khodadadian — treats 467-m as the central economic variable in every conversion mandate. On 6 East 43rd Street, the $135M Vanbarton Group acquisition was underwritten with explicit 467-m abatement modeling supporting the 441-unit, 111-affordable-unit business plan and the $300M Brookfield construction loan. On 101 Greenwich Street, Metro Loft's $105M acquisition reflected the conversion economics enabled by 467-m and the surrounding Lower Manhattan special district zoning. On 530 West 25th Street ($72M Chelsea), the conversion-vs.-renovation comparison turned heavily on 467-m abatement value.
When Skyline runs a conversion sale process, the buyer universe is filtered first by 467-m competence. Buyers without prior 467-m closings, prior HPD affordable-marketing experience, and prior conversion-financing relationships are unlikely to win — sellers value execution certainty above headline price, and 467-m execution risk is the single largest unknown in any conversion deal. Robert Khodadadian's direct relationships with the conversion buyer community (Vanbarton, Metro Loft, Silverstein, GFP, Stellar, RXR) and with the specialized 467-m advisory and construction-finance bench accelerate this filtering and consistently produce closed deals where less specialized brokers would produce broken processes.
Frequently asked questions
- Did 467-m replace 421-g?
- Functionally, yes — for most modern Manhattan office-to-residential conversions, 467-m is the operative abatement framework. 421-g was a 1990s-era program limited to a small Lower Manhattan geography and is closed to new applicants. 467-m has broader geography (most of Manhattan south of 96th Street plus designated commercial districts), longer benefit (35 years), and an explicit affordable-unit requirement that 421-g did not have.
- How much is the 467-m abatement worth in real dollars?
- On a typical Skyline-brokered Manhattan conversion, the NPV of the 35-year 467-m abatement at a 7–9% discount rate lands at 15–25% of stabilized building value — frequently $50M+ on larger assets. For many marginal conversions, the abatement is the difference between a deal that pencils and one that does not.
- What share of units must be affordable under 467-m?
- At least 25% of dwelling units must be permanently affordable, with an HPD-administered blended AMI requirement and a defined deepest-tier minimum. The affordable obligation runs with the land via a recorded regulatory agreement and survives sale or refinance.
- Can I miss the construction commencement deadline and keep the abatement?
- Generally no — the statutory commencement deadline is one of the most strictly enforced features of the program. Missing it typically compresses or eliminates benefit value. Buyers must sequence financing close, DOB filings, and demolition to satisfy the deadline; this is why Skyline advises engaging 467-m counsel before acquisition close.
- Are 467-m affordable units governed by rent stabilization?
- Affordable units under 467-m are subject to HPD regulatory rent restrictions and income recertification, and the surrounding building units may have rent-stabilization implications depending on the specific abatement tier and building characteristics. This is fact-specific and requires affordable-housing counsel; treat any conversion underwriting that assumes pure free-market rent rolls as incomplete.