New York City Mayor Zohran Mamdani on Thursday highlighted key elements of “Block by Block,” the administration’s housing strategy aimed at addressing the city’s affordability crisis through the creation and preservation of affordable housing. The plan sets a goal of producing 200,000 new affordable homes over the next decade and is paired with nearly $5 billion in funding over the next two years for new rent-stabilized affordable housing, including dedicated investments in senior and supportive housing.
The initiative is being advanced by City Hall in coordination with the Department of Housing Preservation and Development, the Department of City Planning, and the New York City Housing Development Corporation.
Block by Block combines direct public investment, financing reforms, and a broad land-use agenda intended to increase housing production across the five boroughs. Key components include a citywide transit-oriented development proposal, the use of voter-approved land-use tools to accelerate affordable housing projects, and the creation of New York City’s first revolving loan fund for affordable housing development. The administration is also continuing implementation of Executive Orders 4 and 5, which were signed on Mayor Mamdani’s first day in office to speed housing development and expand affordable housing opportunities on city-owned land.
The plan incorporates recommendations from the Streamlining Procedures to Expedite Equitable Development (SPEED) Task Force, including reforms to environmental review procedures that city officials say will reduce development timelines for affordable housing projects. Additional strategies focus on maximizing the use of city-owned sites for both 100 percent affordable and mixed-income housing, including projects co-located with public facilities such as schools and libraries. The administration has also outlined efforts to preserve existing affordable housing and improve conditions in public housing developments.
“New Yorkers deserve a housing plan that meets this crisis with ambition, scale and urgency it demands,” Mayor Mamdani said. “If we want New York City to remain a place where working people can afford to live and build a future, we have to build far more housing and give New Yorkers housing options of all types, across the entire city. Block by Block is an all-of-the-above strategy to deliver the homes New Yorkers need, including 200,000 new affordable homes over the next decade.”
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What New York needs is at-cost housing, not “affordable” housing that will need to be subsidized by other tenants in the building or the government. So far, rent restrictions have withstood legal challenges, but that may not be the case forever.
I completely agree that we need to build as much housing as possible. All new supply helps ease the broader vacancy crisis and puts downward pressure on the market. However, framing at-cost and affordable housing as an either/or proposition misses the structural reality of building in New York.
Even if a developer builds completely at-cost with zero profit markup, the baseline costs of land, labor, materials, and compliance in NYC are so high that the final price tag is still entirely out of reach for low and middle-income New Yorkers. The private market simply cannot build cheap enough to house a working-class family without some form of intervention. Saying we shouldn’t use public capital or zoning relief to bridge that gap is essentially saying we shouldn’t build for those income tiers at all.
We don’t have to choose between market-rate supply and subsidized affordable housing. A growing and healthy city requires both working in tandem.
At whose expense should this subsidies derive? That’s the problem with the current affordability strategies. You are robbing Peter to pay Paul. Low-income apartments are subsidized by the adjacent market rate apartments. What you are left with are subsidized apartments which are still unaffordable to low-income residents, and market rate apartments which are now unaffordable to the middle class.
I’m not opposed to public investment in housing, but it needs to be at the capital level and not the operational level. Create a public REIT that derives capital from annual subsidy and the operating profits of its holdings. Use this funding to finance development of existing Xity-owned properties. The key is for the City to finance, not actually develop and manage these buildings themselves. Set parameters for unit count and operating profit of each holding. Without the land and financing costs, these buildings will be able to significantly undercut private competition and will drive down rents.
The success of such a strategy hinges on such a public REIT to be insulated by politics and made quasi-independent. If politicians are able to play games with the assets and developments, then the scheme falls apart. For example, such political games might include leveraging asset holdings to fill budget gaps, dictating development paremeters (e.g. union payoffs), and being unrealistic on contracted building operating practices.
Your proposal for a quasi-independent public REIT focused on capital-level financing rather than operations is a compelling structural approach. By using public funds to eliminate land and financing costs on city-owned properties, we can drastically lower the baseline cost of construction.
But even if a public REIT eliminates land and debt costs, the hard numbers of building in NYC like materials, safety compliance, and labor are still so high that the resulting “unsubsidized” rent would still be completely unaffordable for low-income and working-class families.
To bridge that final gap, we still need operational or direct capital subsidies for the lowest income tiers. We shouldn’t look at public capital as “robbing Peter to pay Paul.” When the city builds market-rate, middle-income, and low-income housing simultaneously, it expands the total supply, relieves pressure across the entire ecosystem, and ensures that New Yorkers at every income level have a place to live.
Housing affordability is a problem all around the world. Resistant suburbs need to be forced to densify, as is being done in California. I’m looking at you Long Island. The City is finally changing course and needs to keep pressing that momentum as its population reaches new highs. The new Mayor clearly understands this.