Washington Is Trading Housing First for Treatment First. The Evidence Runs the Other Way.

At Oklahoma City's annual State of Homelessness address in May, city leaders had a number to point at. Key To Home, the public-private partnership the city launched in 2023, had moved 3,032 people off the street and into housing. Tulsa's newer Safe Move program had housed 725 and was aiming for 575 more by the end of the year. Both cities reported declines in their 2026 point-in-time counts, even though both remain well above where they sat before the pandemic.

The mechanism behind those numbers is not complicated. Key To Home hands people a lease first and offers services second, with no requirement that anyone demonstrate sobriety, complete treatment or pass a screening to get inside. Providers have spent years arguing that this sequence is what makes it work. Now the federal government is dismantling the policy that made it fundable.

The Federal Program Being Phased Out

Last year, President Donald Trump signed an executive order calling for an end to federal support for housing-first policies, and his proposed budget for fiscal 2027 would eliminate the federal initiative that mostly pays for them. In its place the administration wants housing capped at roughly two years, with tenants required to pursue addiction treatment during the stay.

"Housing-first has failed our most vulnerable and enabled addiction," HUD said in an email to the Associated Press. "HUD's proposed reforms seek to address the root causes of homelessness and advance recovery, self-sufficiency, and competition that drives accountability."

The pivot has a name in policy circles: treatment-first. It is not a fringe position. Devon Kurtz, public safety policy director at the Cicero Institute, told the AP that the central disagreement is whether services should be mandatory, and he worries that permanent supportive housing became a one-size-fits-all answer for populations better served by short-term transitional beds.

What makes the timing awkward is that the published evidence has never been clearer about which sequence produces which result.

What 13,393 Screened Records Actually Say

A rapid review published this month in Addiction Science & Clinical Practice sets out to answer the question directly. Led by Oluwaseyi Dolapo Somefun of the Centre for Addiction and Mental Health in Toronto, with collaborators from the University Health Network, the Canadian Centre on Substance Use and Addiction and the University of Toronto, the team searched five databases for peer-reviewed studies published between January 2000 and April 2025. They screened 13,393 records and kept 57 studies: eight randomized controlled trials, thirty quasi-experimental studies, six qualitative studies, five mixed-methods studies and eight of other designs, each appraised with Joanna Briggs Institute tools.

The verdict on housing stability was unambiguous. Housing First models — permanent housing, no sobriety or treatment precondition — consistently outperformed treatment-first, linear and treatment-contingent models and treatment-as-usual comparisons. The finding held across randomized trials and observational studies alike, which is the pattern you want when you are trying to decide whether something works outside a laboratory.

The authors are explicit that they began with a politically live question. They note that rapid shifts in several jurisdictions have favored treatment-focused approaches, "often framing addiction treatment as a gateway to housing," and set out to determine what the literature actually supports. What it supports is the reverse ordering.

Four Architectures, One Sequence

The review sorts housing-based support into four program types. Scattered-site models place tenants in independent apartments dispersed across a community and bring services to them. Single-site models concentrate housing and on-site services in one building, which offers intensity but risks recreating an institutional environment. Transitional housing is time-limited by design and functions as a bridge. Outreach support-to-housing begins with street-level engagement and walks people incrementally toward a unit.

Each architecture encodes a different assumption about what someone needs first. The one thing they share in the evidence base is that housing arrives before the behavioral-health milestones rather than after them.

Where the Evidence Thins Out

If the review is clear about stability, it is candid about everything else. Effects on substance use were heterogeneous. Alcohol-related outcomes improved more consistently across studies, while effects on illicit drug use varied widely — some studies showed meaningful reductions, others found no significant difference from control conditions. That gap matters for policy, because it suggests housing alone does not automatically resolve the full spectrum of substance use health needs, particularly for stimulant and opioid use where the evidence for spontaneous improvement without integrated treatment is weakest.

Mental health results were similarly mixed. Some studies found no difference on psychiatric symptom measures; others documented real reductions in psychological distress. The reviewers push back on reading that as failure. Mental health trajectories in this population are shaped by trauma history, physical health, social connection and access to psychiatric care — variables housing does not control. What the data do support is that Housing First does not worsen mental health, a persistent concern among critics, and in several studies reduces distress while delivering far better housing outcomes.

The fiscal case is the softest. Several studies suggested participants spend fewer days in hospitals and emergency departments, generating offsets that partially or fully pay for housing and support services. But the reviewers describe that evidence as promising rather than definitive, with differences in health system context, measurement and follow-up duration muddying comparisons.

What Providers Are Actually Facing

The consequences of the shift are already visible outside Oklahoma. Planned housing projects have been scrapped in Corbin, Kentucky, and less housing is available for unhoused residents in places like Santa Cruz County, California. In Louisville, nonprofits are weighing whether to convert permanent housing into temporary housing — including most of the 200 apartments run by the St. John Center, whose executive director, Ra'Shann Martin, put the stakes plainly to the AP: "Housing is healthcare. The longer people stay unhoused, the more fragile they become."

In Oklahoma, providers are preparing for gaps rather than arguing about philosophy. Rachel Freeman, chief executive of the Oklahoma City night shelter and supportive housing provider City Care, said everyone in her permanent supportive housing program is chronically homeless and living with a physical or mental disability. "That intersection has been the place that City Care has specialized," she said.

Meghan Mueller, chief executive of the Homeless Alliance in Oklahoma City, expects the treatment-first models to leave some people without a place to go. "Not everyone's necessarily appropriate for those models," she said. Amy Coldren, advocacy and communications director at the Mental Health Association Oklahoma, described a menu rather than a mandate at her organization — clients who want detox or a recovery program before housing can choose that path, and many do.

Two in Five, and Two-Thirds

The population at the center of the argument is not marginal. HUD estimated nearly 750,000 people were homeless last year, down slightly from 2024 but up 31 percent from 2019. About a quarter are chronically homeless, meaning they have a disability and year-long or repeated episodes of homelessness.

Research cited in the Oklahoma Watch reporting puts roughly half of homeless adults living with a disability, up to two-thirds with mental illness and two in five with a substance use disorder. Rates of disability, heart disease and diabetes run two to three times higher than in the general population. These are the people for whom permanent supportive housing was designed, and they are the ones most likely to be filtered out by a treatment precondition — either because the treatment does not exist where they are, or because they are not ready to walk through that door first.

What This Means for Treatment

The review's own recommendation is neither abolition nor a blank check. The authors call for scaling up low-barrier Housing First while embedding expanded voluntary substance use treatment, mental health care, harm reduction and wraparound services inside the housing. They are pointed about the voluntariness: the evidence base does not support coercive treatment mandates as a condition of housing, but it does support making comprehensive, choice-based care readily available to tenants who want it.

That distinction is the practical heart of the matter for clinicians. Co-occurring substance use and mental health conditions are the norm rather than the exception in this population, and treatment engagement tends to follow stability rather than precede it — a person with untreated psychosis, a chronic wound or no address has a hard time keeping a medication schedule that is the whole point of the exercise. Housing is not a substitute for the clinical levels of care that medication-assisted treatment, outpatient counseling and residential programs provide. It is the platform that makes them usable.

The review also identifies what nobody has settled. Because treatment-first models are studied less often and less consistently than Housing First, head-to-head comparisons remain thin, and the authors flag the need for longer-term research on which specific components actually move substance use outcomes. That is an argument for more measurement, not for abandoning the sequence the evidence already supports.

For the 3,032 people Key To Home has housed in Oklahoma City, the argument is more concrete than the policy debate suggests. The federal government is proposing to make their apartments temporary. The research published this month says the order in which help arrives is not a detail.

For families navigating addiction alongside housing instability, the review's message is narrower than it sounds: stable, low-barrier housing does not treat anyone. It just stops the clock on the part of the crisis that makes everything else harder to reach.