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What will the 21st century road to housing act do for housing supply?

Brian Potter doesn't just dissect the new 21st Century ROAD to Housing Act; he dismantles the hype surrounding it with a surgeon's precision. While headlines scream about a historic supply boost, Potter argues that the law is a "sprawling mass of changes" where the actual mechanisms for increasing housing are buried under unrelated provisions and, crucially, a total lack of allocated funding. This is not a victory lap; it is a stress test of whether federal legislation can actually move the needle when it refuses to write a check.

The Funding Paradox

The most startling revelation in Potter's analysis is not what the bill does, but what it lacks. He notes that "no funding is allocated for any of its programs," pointing to Section 1202 which explicitly states that "[n]o additional funds are authorized to be appropriated to carry out the requirements of this Act." This creates a precarious reality where the law authorizes massive new programs—like a $200 million annual Innovation Fund for jurisdictions that boost supply—but leaves the actual money to be hunted down in future, uncertain congressional appropriations.

What will the 21st century road to housing act do for housing supply?

Potter draws a sobering parallel to the science half of the 2022 CHIPS and Science Act, noting that similar legislation saw anywhere from 60 to 90% of its authorized funding actually appropriated depending on the year. The implication is clear: without a dedicated revenue stream, the executive branch's ability to execute this law is entirely dependent on the whims of future budget cycles. Critics might argue that this is standard legislative maneuvering to get a bill passed, but Potter's framing suggests it renders the law's most ambitious supply-side goals vulnerable to political gridlock before they even begin.

"The very last section, 1202, specifically states that '[n]o additional funds are authorized to be appropriated to carry out the requirements of this Act.'"

The Illusion of Impact

Potter's skepticism deepens as he examines Title I, "Opportunities for Housing." He categorizes the bill's 59 sections into three groups, revealing that "most provisions of it actually fall into the third category and won't realistically have any impact on housing supply." These range from preventing the Federal Reserve from creating a digital currency to installing temperature sensors in public housing—measures that do nothing to unlock new units. This is a vital distinction for busy readers: the bill's size is a distraction, not a signal of efficacy.

When he turns to the specific supply-side mechanisms, the impact appears even more muted. Take Section 102, which directs the Department of Housing and Urban Development (HUD) to create guidelines for "point-access block" buildings (single-stair multifamily structures). Potter acknowledges the logic: eliminating the requirement for a second stairway could reduce construction costs by an estimated 6–13%. He recalls a developer who was "willing to cover the cost of a new fire truck if a jurisdiction would allow the use of single-stair buildings, such was the magnitude of the projected savings."

However, Potter argues this provision has "little in the way of teeth." It mandates guidelines, not adoption. With 19 states already considering similar bills and the International Code Council moving to allow these structures in the 2027 code, the federal law is arguably just catching up to a trend that was already gaining momentum. The historical context here matters; as Potter notes in his broader work on NIMBYism, local zoning power often overrides federal guidelines, meaning this change may be symbolic rather than transformative.

The Rural and Mortgage Missteps

The analysis of Section 103, which exempts USDA Rural Development infill housing from environmental reviews, is equally grounded in data over hope. Potter points out that the USDA has funded over 5.5 million rural housing units since 1950, yet currently builds "less than 5,000 units per year," possibly as few as 1,000. Because much of this construction already qualifies for a categorical exclusion from the National Environmental Policy Act (NEPA), the new exemption removes a barrier that barely existed for the vast majority of these projects.

Similarly, Section 105's push for FHA-backed small-dollar mortgages (under $100,000) faces a harsh market reality. Potter highlights that in 2023, there were only 1,000 new homes sold for less than $150,000 nationwide. Even when expanding the scope to manufactured homes, the math doesn't add up: the average new manufactured home costs over $120,000 before land and installation. "It's thus likely more than half of new manufactured homes titled as real property would be beyond the $100,000 cutoff," Potter writes. The provision targets a market segment that is virtually non-existent in new construction.

Yet, Potter allows for a sliver of optimism. He suggests that if the lending constraint is truly "binding," relaxing it could unlock a new wave of smaller, affordable homes, particularly if paired with the manufactured home regulatory changes in Title III. "None of these is guaranteed," he admits, but he concedes there is a "higher plausible upside to this provision than to the other provisions we've looked at."

"The fundamental issue with small-dollar mortgages is a tension between what a mortgage originator earns on a mortgage and what it costs them to originate."

Bottom Line

Brian Potter's commentary serves as a necessary reality check against the narrative that a single bill can solve America's housing crisis. The strongest part of his argument is the exposure of the funding gap, which threatens to turn the law's most creative ideas into paper tigers. The biggest vulnerability in the legislation, as Potter identifies, is the assumption that deregulation alone will spur production in a market where the binding constraints are often financial and demographic, not just bureaucratic. Readers should watch not for the headlines, but for the subsequent appropriations bills that will determine if this law ever actually builds a single home.

Deep Dives

Explore these related deep dives:

  • Home construction

    The article analyzes how the new law attempts to stimulate housing production by relaxing specific constraints on building new units.

  • USDA Rural Development

    The legislation includes provisions modifying existing government housing programs, with rural development being a key area of federal intervention discussed.

  • NIMBY

    The article argues that the law's success depends on whether it can actually overcome the local political constraints and community opposition that historically block new housing supply.

Sources

What will the 21st century road to housing act do for housing supply?

A few weeks ago the 21st Century ROAD to Housing Act became law. This is an enormous housing bill that’s been in the works for roughly a year — I first discussed it on Statecraft back in 2025 — and folks are optimistic that it will, per its description, “increase the supply of housing in America.”

But actually understanding what, specifically, the law will do is tricky. Like many large pieces of legislation, this is an amalgamation of many smaller laws: the Act has 59 individual sections, each of which does something different. Some of these sections create new housing programs; some of these sections modify existing government housing programs in complex ways; and others relax or change various housing laws but have complicated implementation details.

And once you’ve parsed what the law will actually do, you still need to predict how the various participants in the housing market will actually respond to the changes. (As we covered last month, the actual effects of laws can diverge significantly from lawmakers’ intentions.) Much of this law is aimed at changing the incentives around housing production — stimulating the production of housing by relaxing various constraints on producing it. But it’s not always obvious how binding the particular constraints that the law targets are, and how much housing we can expect to be unlocked by easing them.

As this is the biggest US housing bill in living memory, aimed at addressing one of the biggest problems in the US, it’s worth looking closely at the law and trying to tease out what the likely effects on housing supply will actually be.

Because there are so many individual sections, each of which requires drilling somewhat deep on a particular government program or aspect of the housing market, I’m not going to try to do this all in one shot. This will be the first in a series of posts (probably 4–5 total), each of which looks at one chunk of the housing bill.

A high-level look.

At a high level, we can sort the individual provisions of the ROAD to Housing Act into three categories:

Provisions that target the construction of new housing, either directly or indirectly.

Provisions that target the preservation of existing housing.

Provisions that do something else.

Despite the ostensible overarching goal of the law being increasing housing supply, most provisions of it actually fall into the third category and ...