After a Historic Win: The Legal Constraints on Mayor Mamdani’s Social Housing Agenda
By: Elaine Lu
Edited by: Gabriela Pesantez and Hannah Becker
On November 4, 2025, New York City elected Democratic socialist Zohran Mamdani as its mayor after defeating establishment candidate Andrew Cuomo and Republican Curtis Sliwa. Mamdani’s grassroots campaign, focusing on affordable housing, free public transportation, and lowering the cost of living, propelled his victory. His message gained immense traction through his unique social media presence and mobilization of local communities across the city’s five boroughs. [1]
One of Mamdani’s focal points was making New York City more affordable, particularly through his social housing policy. He identified growing homelessness rates and the city’s reliance solely on zoning incentives to promote private development as central problems to address. As a solution, he argues to “unleash the public sector to build housing for many” by expanding the production of publicly subsidized and rent-stabilized housing. [2] Specifically, his administration plans to build 20,000 new, permanently affordable, and publicly subsidized housing units over the next ten years. Mamdani also intends to freeze rent for rent-stabilized apartments by using his mayoral appointment power to restructure the Rent Guidelines Board (RGB).
These policies have received widespread support, not only in New York City but nationwide as well. Data for Progress polling reflects that 83% of Americans support “speeding up the approval process to build affordable housing,” and 82% support “penalizing landlords who significantly increase rent or violate tenant protections.” [3] These sentiments reflect a broad political appetite for populist policies that address the cost-of-living crisis.
However, there are legal and institutional limits to Mamdani’s ability to achieve these ambitious goals. In order to secure the $10 billion dollars of projected funding required to triple the city’s current level of capital-funded housing construction, New York City will require significant federal assistance. The issue lies in President Donald Trump’s FY2026 budget proposal, which “calls for slashing Housing and Urban Development funding by nearly 44%,” resulting in more than $4.4 billion dollars lost in federal funding for New York. [4] Additionally, New York’s borrowing power is restricted by Article VIII of the state constitution, which states, “No…city… shall be allowed to contract indebtedness that shall exceed ten per centum of the average full valuation of taxable real estate.” [5] This means that New York City can only borrow up to a fixed percentage of its five-year average property values and has a legal limit on taking on new debt for a large-scale social housing construction program. As a result, Mamdani’s strategy to finance his social housing program requires some combination of private and public partnerships and bond issuances structured to comply with constitutional limits.
Mamdani’s proposal to appoint a Rent Guidelines Board (RGB) to engineer a rent freeze similarly has legal complications. Although the mayor can appoint all nine members of the Board, state law requires two members to “represent tenant interests,” two members to “represent owner interests,” and the remaining five to “represent the general public.” [6] This composition is intended to keep the RGB from operating politically, as they are legally obligated to evaluate the necessity for rent freezes annually based on data such as landlord operating costs, vacancy rates, and cost-of-living indices. If the RGB makes decisions based solely on political affiliation, Article 78 of the New York Civil Practice Law and Rules allows those harmed by the decision of an administrative board to commence a proceeding for judicial review and prove the “body or officer failed to perform a duty enjoined upon it by the law” and made a determination that was “arbitrary and capricious.” [7] By promising a rent freeze to constituents in advance, Mamdani risks undermining the RGB’s impartiality and Article 78 litigation.
Even if Mamdani were able to navigate these legal and institutional hurdles, his housing agenda still faces popular critiques that complicate its implementation. Critics of rent freezes and expanded rent stabilization argue that Mamdani’s policies reduce incentives for new housing construction and encourage landlords to withdraw units from the rental market to convert to other use. In a city like New York, where housing demand is known to be unresponsive to price changes, reducing supply may not meaningfully reduce demand but instead exacerbate shortages and drive up rents. Landlords also argue that freezing rents could reduce funds for maintenance, worsen building conditions, and discourage new housing construction by deterring new development investment. [8] These dynamics risk undermining the very goals of affordability Mamdani seeks to achieve, and their implementation in New York City will serve as a critical test for the merit of these longstanding critiques.
Mamdani’s social housing agenda has gained momentum in the current political and economic climate, and the nation is carefully monitoring its implementation as Democrats and Republicans alike decide whether to model similar populist policies as midterm elections approach. For Mamdani, the challenge will be navigating how to successfully circumvent the legal and institutional barriers that may limit the scope of his policies’ implementation. His ability to execute an ambitious socialist framework will determine not only the success of his agenda for New York City but also whether policies to ensure affordable housing are a viable model for the rest of the country.
Notes:
1. Rachel Treisman and Brian Mann. “Mamdani Wins New York City Mayoral Race, in a History Victory for Progressives.” NPR. November 5, 2025. https://www.npr.org/2025/11/04/nx-s1-5597788/election-results-zohran-mamdani-new-york-city-mayor
2. Anon. “Housing By and for New York.” Zohran Mamdani for New York City. February 2, 2025. https://www.zohranfornyc.com/policies/housing-by-and-for-new-york
3. Ryan O’Donnell. “Voters Nationwide Support Mamdani Policies, Want the Government to Play a ‘Major Role’ in Lowering Costs.” Data For Progress. November 2, 2025.
https://www.dataforprogress.org/insights/2025/11/5/voters-nationwide-support-mamdani-policies-want-the-government-to-play-a-major-role-in-lowering-costs
4. Meyersohn, Nathaniel. “Zohran Mamdani has big housing plans. Here’s what stands in the way.” CNN. July 4, 2025. https://amp.cnn.com/cnn/2025/07/04/business/zohran-mamdani-nyc-mayor-housing-affordability
5. N.Y. Const. art. VIII, § 2, https://www.nysenate.gov/legislation/laws/CNS/ARTVIII
6. Anon. “Board & Staff” NYC Rent Guidelines Board. https://rentguidelinesboard.cityofnewyork.us/about/board-staff/
7. N.Y. C.P.L.R. § 7803(3), https://www.nysenate.gov/legislation/laws/CVP/7803
8. Eliza Relman and Jireh Deng. “Zohran Mamdani wants to freeze rents for New Yorkers. Here’s why it’s controversial.” Business Insider. July 5, 2025. https://www.businessinsider.com/zohran-mamdani-wants-to-freeze-rents-heres-why-its-controversial-2025-7
Bibliography:
Anon. “Board & Staff.” NYC Rent Guidelines Board. Accessed November 22, 2025. https://rentguidelinesboard.cityofnewyork.us/about/board-staff/.
Anon. “Housing By and for New York.” Zohran Mamdani for New York City. February 2, 2025. https://www.zohranfornyc.com/policies/housing-by-and-for-new-york.
Meyersohn, Nathaniel. “Zohran Mamdani Has Big Housing Plans. Here’s What Stands in the Way.” CNN. July 4, 2025. https://amp.cnn.com/cnn/2025/07/04/business/zohran-mamdani-nyc-mayor-housing-affordability
N.Y. C.P.L.R. § 7803(3). https://www.nysenate.gov/legislation/laws/CVP/7803.
N.Y. Const. art. VIII, § 2. https://www.nysenate.gov/legislation/laws/CNS/ARTVIII.
O’Donnell, Ryan. “Voters Nationwide Support Mamdani Policies, Want the Government to Play a ‘Major Role’ in Lowering Costs.” Data for Progress. November 2, 2025. https://www.dataforprogress.org/insights/2025/11/5/voters-nationwide-support-mamdani-policies-want-the-government-to-play-a-major-role-in-lowering-costs.
Relman, Eliza, and Jireh Deng. “Zohran Mamdani Wants to Freeze Rents for New Yorkers. Here’s Why It’s Controversial.” Business Insider, July 5, 2025. https://www.businessinsider.com/zohran-mamdani-wants-to-freeze-rents-heres-why-its-controversial-2025-7
Tracy, Matt. “New York City commercial real estate industry seeks to work with Mamdani as rent freezes threaten.” Reuters. November 10, 2025. https://www.reuters.com/business/finance/new-york-city-commercial-real-estate-industry-seeks-work-with-mamdani-rent-2025-11-10/
Treisman, Rachel, and Brian Mann. “Mamdani Wins New York City Mayoral Race, in a Historic Victory for Progressives.” NPR. November 5, 2025. https://www.npr.org/2025/11/04/nx-s1-5597788/election-results-zohran-mamdani-new-york-city-mayor.