By Dr. Aisha Thornton
Every year, city councils from New York to Los Angeles pass resolutions vowing to “tackle the affordable housing crisis.” Every year, the gap between incomes and rents widens. The problem isn’t that leaders don’t see the urgency—it’s that they keep applying the wrong tools, or the right tools in the wrong way.
The Math Doesn’t Work—and Everyone Knows It
Housing costs are driven by a simple equation: supply, demand, and the incomes of the people who need the homes. But most “affordable housing” programs peg rents to percentages of area median income (AMI), a number skewed upward in cities with sharp income inequality. The result? New units labeled “affordable” often remain out of reach for the people most in need—teachers, service workers, home health aides—while satisfying the letter of the policy.
The Market Alone Won’t Fix It
Developers follow incentives. Without strong inclusionary zoning, public subsidies, or land use reform, they will continue to build for the highest bidder. Even when incentives exist, they often come with loopholes—short affordability periods, weak enforcement, or buyout options that allow developers to avoid building lower-rent units altogether.
In many cities, the same parcels of land earmarked for affordable housing have been flipped into market-rate condos after political pressure or zoning variances. Meanwhile, public housing stock ages into disrepair, and new construction lags far behind population growth.
Zoning: The Invisible Wall
Exclusionary zoning—large minimum lot sizes, bans on multifamily units, restrictive height limits—locks huge swaths of land into low-density, high-cost housing patterns. These rules are often justified under the guise of “neighborhood character,” but in practice, they restrict supply, drive up prices, and perpetuate segregation by income and race.
Cities that have meaningfully tackled housing shortages—Tokyo, Minneapolis, Auckland—have done so by reforming zoning to allow more density near transit, jobs, and services.
What Works: A Three-Part Strategy
Deep Affordability Mandates – Tie rents to what low-income residents actually earn, not to inflated AMI figures. Extend affordability requirements for decades, not years.
Public Land for Public Good – Leverage city-owned parcels for permanently affordable housing, insulating them from speculative markets.
Zoning for Inclusion – Eliminate bans on multifamily housing, legalize accessory dwelling units, and streamline approvals for affordable projects.
None of these strategies is revolutionary. What’s missing is the political will to overcome entrenched opposition from homeowners, developers, and local officials wary of density.
Cities can solve the affordable housing crisis, but not by tinkering at the edges. They must align zoning, subsidies, and rent formulas to serve the people actually locked out of the market. Until then, “affordable housing” will remain a phrase we print in policy briefs and campaign speeches—while the people it’s meant to protect keep moving further away.
