Sanctuary Suburbs
The Politics of Opting Out
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They had voted to leave the city. Then they showed up to tell it what to do.
A few weeks ago, Austin’s Zoning & Platting Commission heard a case involving the rezoning of an obsolete office park, a project that would bring a mixed-use residential complex to an expensive part of the city that overlaps with the top school district in Texas. The opposition wasn’t unusual—except for one detail. The neighbors objecting didn’t live in Austin, having voted to deannex from the city in 2024. Now they were asking the city to “protect” them. The case was decided on the merits, not on jurisdictional questions, but it was a striking example of something much more common.
These residents had opted out of the city—out of its taxes, its governance, its responsibilities. And yet they still thought they had the authority to control what happened next door, even though “next door” remained within city limits.
That’s not unusual. It’s a defining feature of the modern American suburb.
We talk a lot about sanctuary cities. But the American suburb was always seen as a sanctuary from the city. While modern suburbs emerged in response to increasing wealth, automobility, and changing preferences a century ago, they were also fueled and protected by a system of subsidies and policies that privileged suburban interests at the expense of the cities they depended on. That system did not emerge organically. Indeed, the modern sanctuary suburb is largely a function of those policies.
At the federal level, the government created the subsidized 30-year mortgage to enable mass ownership of detached single-family homes largely for middle-class households, while deploying underwriting standards that denied capital to African-Americans, Jews, and immigrants. Tax policy made mortgage interest deductible, penalizing renters. Federal dollars funded urban renewal programs to bulldoze the “slums”—largely coterminous with those same redlined neighborhoods—displacing thousands. What urban renewal didn’t touch, federal highway spending finished, as high-speed roads were built through low-income neighborhoods for the benefit of those who had already left the city.
State policy reinforced this arrangement by protecting suburban independence, most notably by curtailing cities’ ability to annex surrounding areas. As metropolitan regions grew, this fragmented governance, separating where growth occurred from where it was planned, financed, and managed. Cities lost not just territory, but the ability to coordinate development and align growth with infrastructure and fiscal capacity. At the same time, states ceded zoning authority to municipalities in the name of local control. In practice, this allowed suburbs to translate a preference for detached single-family homes into law, constraining supply to stabilize property values, limit demographic change, and preserve a fixed vision of neighborhood form. Over time, those expectations hardened into something more than policy. “Neighborhood character” became a kind of entitlement, embedding an aesthetics of exclusion. And because these tools were so widely adopted, they came to feel less like government interventions and more like the natural order of things.
Altogether, these policies did not just enable suburban growth; they sanctified it, turning homeownership—and the single-family neighborhood—into a limited, protected asset. Scarcity was not a byproduct of the system. It was the system.
