The Article XI tax abatement in NYC is a property tax exemption, authorized by Article XI of New York’s Private Housing Finance Law, that lets the City Council exempt an affordable housing project from real property taxes for up to 40 years when the building is owned by a Housing Development Fund Company and operated under a regulatory agreement with the city.1New York State Senate. New York Private Housing Finance Law 577 – Tax Exemptions It is one of the deepest tax subsidies available for affordable housing in the city, and it comes with strict, permanent rules about who owns the building, who can live there, and what the rents can be.
What the Exemption Covers
Article XI authorizes the local legislative body to exempt all or part of a housing project’s assessed value from local and municipal taxes, including school taxes. The only charges that survive are assessments for local improvements such as sidewalks or sewers.1New York State Senate. New York Private Housing Finance Law 577 – Tax Exemptions
The exemption can run for up to 40 years, measured from the date the tax benefit first takes effect.1New York State Senate. New York Private Housing Finance Law 577 – Tax Exemptions The City Council sets both the depth of the exemption (how much of the assessed value is exempt) and its duration, so the terms are project-specific rather than standardized. Both new construction and substantial rehabilitation of existing residential buildings can qualify, as long as the property serves low-income housing purposes. Multi-family rentals and residential cooperatives are the most common project types.
Who Can Get It: The HDFC Requirement
Only a Housing Development Fund Company can hold an Article XI exemption. An HDFC is a special-purpose corporation formed under both the Not-for-Profit Corporation Law (or the Business Corporation Law) and Article XI of the Private Housing Finance Law, organized for the exclusive purpose of developing housing for people with low incomes. The corporate name must include the words “housing development fund corporation” or “housing development fund company.”2New York State Senate. New York Private Housing Finance Law 573 – Incorporation and Organization of Housing Development Fund Companies
The HDFC form carries restrictions that ordinary nonprofits don’t face. All income and earnings must be used exclusively for corporate purposes. No portion of net income can benefit any private individual or outside entity. Ordinary dividends are prohibited, and profits must go toward capital improvements or rent reductions. The HDFC also cannot sell or dispose of its property without consent from the supervising agency.3New York State Senate. New York Private Housing Finance Law 576 – Regulatory Requirements These rules are baked into the certificate of incorporation itself. New York State Homes and Community Renewal publishes a boilerplate certificate that HDFCs can use as a starting point.4New York State Homes and Community Renewal. Housing Development Fund Corporation (HDFC)
How the Tax Is Calculated in NYC
In New York City, many Article XI projects pay a gross rent tax rather than a conventional property tax. Instead of being taxed on assessed value, the building pays a percentage of its gross potential rental income. The percentage depends on the depth of income targeting: projects serving very low-income tenants, with average rents below 60% of AMI, typically pay a lower rate than projects with higher rents.
HPD has discretion to adjust the rate based on the project’s debt service coverage, immediate physical repair needs, and whether the building commits to additional policy goals such as housing formerly homeless families. The result is a tax bill tied to the rents the building can actually collect rather than a theoretical market assessment, which is what makes the numbers work for a deeply rent-restricted building.
Income Limits and Rent Rules
Under the Private Housing Finance Law, “low income” means household income up to 165% of Area Median Income.5Housing Preservation & Development. HDFC Cooperatives That’s the statutory ceiling, but most Article XI projects operate under far stricter limits imposed by their individual regulatory agreements, deeds, or certificates of incorporation. Many buildings reserve units across a range of tiers, from extremely low-income households at or below 30% of AMI up through moderate-income households at 120% of AMI.6New York City Department of Housing Preservation and Development. Area Median Income Whichever restriction is tightest controls.
Rents are capped to match. The supervising agency or regulatory agreement fixes maximum rentals at an amount sufficient to cover the project’s necessary operating costs and no more.3New York State Senate. New York Private Housing Finance Law 576 – Regulatory Requirements The goal is a building that breaks even while charging rents its target population can afford.
The Regulatory Agreement
Every HDFC receiving Article XI benefits enters into a regulatory agreement with the supervising agency. This contract spells out income eligibility standards, rent ceilings, maintenance obligations, and governance requirements for the full duration of the abatement.7NYC Housing Preservation & Development. Fact Sheet for Cooperative HDFC Shareholders It runs with the property, so it binds any future owner.
HPD reviews the project’s current and projected finances to determine what level of exemption the project actually needs to stay solvent. The exemption is tailored to each project’s financials rather than issued at a fixed rate.8NYC Housing Preservation & Development. Article XI – HPD
How a Project Gets Approved
In New York City, an Article XI request starts inside HPD, usually through whichever HPD loan or subsidy program is facilitating the project. HPD reviews the finances, confirms the sponsor meets all review requirements, and sets the exemption level. The request then goes to the City Council through HPD’s Intergovernmental Unit.8NYC Housing Preservation & Development. Article XI – HPD
The Council must calendar the item and pass a resolution authorizing the exemption. In cities of one million or more, which in practice means New York City, the Council has 120 days from receiving the supervising agency’s written request to approve or disapprove. If it doesn’t act within that window, the exemption is deemed approved.1New York State Senate. New York Private Housing Finance Law 577 – Tax Exemptions
After the resolution passes, HPD issues a Certificate of Eligibility and files it with the Department of Finance on the owner’s behalf. Finance then implements the benefits on the property’s records, and the owner can verify the change on the Statement of Account.8NYC Housing Preservation & Development. Article XI – HPD
Other Tax Benefits That Come With It
The Article XI package covers more than property taxes. HDFC mortgages are exempt from the mortgage recording taxes imposed under Article 11 of the Tax Law.1New York State Senate. New York Private Housing Finance Law 577 – Tax Exemptions On a New York City financing, where the combined rate runs above 1% of the loan, that exemption can save tens of thousands of dollars per transaction.
HDFC projects incorporated under the Not-for-Profit Corporation Law are also exempt from state sales and compensating use taxes, provided the HDFC has entered into a regulatory agreement for affordable housing with the commissioner, a state agency, or HPD.1New York State Senate. New York Private Housing Finance Law 577 – Tax Exemptions That cuts the cost of construction and renovation materials during the phase when the HDFC is spending the most.
Losing the Exemption
The Article XI exemption is not permanent. HPD may revoke it if the property is not owned and operated in accordance with Article XI requirements.7NYC Housing Preservation & Development. Fact Sheet for Cooperative HDFC Shareholders Common compliance failures include renting or selling units to households above the income limits, failing to maintain the building, not filing required financial reports, or allowing net income to benefit private individuals.
Losing the exemption means the building’s full assessed value becomes taxable, and for a multi-family building in New York City, the jump in annual cost can be severe enough to force a large maintenance increase on shareholders or push the building toward insolvency. Regulatory agreements typically include cure periods and notice provisions before revocation, but the practical rule is simple: the tax benefit lasts only as long as the HDFC keeps its end of the deal.
What Happens After 40 Years
When the abatement ends, the property faces its full assessed tax liability. In neighborhoods that have appreciated since the exemption began, the gap between the subsidized bill and a market-rate assessment can be very large.
The statute does not provide for automatic renewal. A new exemption requires a fresh application and another City Council resolution, running through the same financial review and political approval as the original. Some HDFCs have obtained replacement abatements; buildings that let the abatement lapse without a plan often face sudden maintenance increases that undo the affordability the program was designed to protect. Planning several years out, both financially and strategically, is the realistic timeline.
A Note for HDFC Co-op Shareholders
If the Article XI project is a cooperative, resale is not like a market-rate co-op. Sale prices must be low enough that the incoming household spends no more than roughly one-third of its income on total housing costs, including mortgage, maintenance, and utilities. Most HDFC co-ops also impose a flip tax that splits sale profits between the seller and the corporation, with the corporation’s share reinvested in capital repairs.5Housing Preservation & Development. HDFC Cooperatives The exact percentages and rules sit in the building’s bylaws, certificate of incorporation, proprietary lease, and regulatory agreement, so those are the documents to check before assuming what a sale will look like.