What If Independence Was Measurable? The Case for a National Home Accessibility Standard
Picture a program office at an area agency on aging. The team runs a home-modification program: ramps, grab bars, bathroom renovations for older adults determined to stay in their homes. The program is funded, staffed, and full of people doing careful work. Two certified assessors visit the same home in the same week. Both are trained. Both are experienced. They return with two different reports and two different sets of recommendations. The contractor then goes to the house with or without the set of recommendations and installs grab bars and a walk-in shower according to ADA standards just to be safe: their safety, not the homeowner’s.
At the state level, the funder asks the only question funders ask: did it work?
And there is no number to answer with.
We measure what we take seriously
Healthcare measures everything it considers consequential. Blood pressure, because hypertension kills quietly. A1C, because diabetes must be managed over years. Hospital readmissions, because they reveal whether care actually worked. Measurement is not bureaucracy. It is how a system learns, compares, improves, and decides where the next dollar goes. Vital signs are measured as if lives depend on them, because they do. The home, where those lives are actually lived, has never been given the same respect. Measure the home like someone’s life depends on it. It does.
Now consider where American healthcare is actually delivered. Care is moving into the house: hospital-at-home, value-based models judged on post-discharge outcomes, Medicaid home and community-based services. The home has become the setting where outcomes are won or lost, particularly for the one in four adults over 65 who will fall this year, at a national cost of roughly 80 billion dollars annually in non-fatal falls alone.
Yet the readiness of that setting, the single environment where an older adult spends most of her hours, is still assessed in most of the country by professional opinion. Skilled opinion, well-intentioned opinion, but opinion: unscored, incomparable, and unable to prove anything to anyone. Assumed working because it meets a public design standard.
As an occupational therapist, I performed those assessments for years. The home environment does one of two things: it enables function, or it disables function. What the field lacked was not insight. It was an instrument that was standardized and personal.
What a standard requires
A standard is not a longer checklist. It is a measurement that holds up under the questions any scientist, any procurement office, and any journal reviewer would ask of it.
Does it produce the same score regardless of who administers it? For the Home for Life Design Accessibility Ratings®, the answer is documented: an inter-rater reliability of .92 among occupational-therapist raters, published in the American Journal of Occupational Therapy in 2019 and replicated with 52 raters in 2023. Reliability is what separates a measurement from a judgment; it is the property that lets a program trust a score no matter which staff member produced it.
Does it measure what it claims to measure? A 2025 content-validity study published in The Open Journal of Occupational Therapy confirmed validity indices from .875 to 1.0 across all items. And because programs increasingly work remotely, the instrument has also been validated for virtual, telehealth-based home assessment, published in the International Journal of Telerehabilitation in 2023.
Does it scale? A score, unlike an opinion, can be compared: this home against itself after modification, one home against five hundred others in a program, one program against a population. That rollup, from a single bathroom to an entire funded portfolio, is what turns home assessment from a service into infrastructure.
What happens when programs can finally prove the cost of independent living
The proof now exists in the peer-reviewed record. A 2026 mixed-methods study of HUD’s Older Adult Home Modification Program, published in the American Journal of Occupational Therapy, measured 25 rural homes with the Ratings before and after modification. Accessibility scores improved 52 percent. Safety scores improved 48 percent.
The economics are just as measurable. HUD’s 2025 evaluation of the same program found that the average modification cost $5,400 per client. Set that one-time figure against roughly $5,900 a month for assisted living, or more than $10,600 for a private nursing-home room, and the cost of independent living stops being an abstraction. For the first time, a program can price what it delivers: independence, measured, at a fraction of the institutional alternative.
And the proof shows up where it matters most: in program survival. When Finger Lakes Community Action used the Ratings to score homes before and after modifications under OAHMP funding, the resulting data helped the program demonstrate its outcomes and secure continued funding. That is the practical meaning of measurement. Programs that can prove impact keep their funding. Programs that cannot, compete on anecdotes.
The standard already exists
A wave of new tools has entered this space, many pairing artificial intelligence with a remote clinician to generate a home-safety report. Their arrival validates the category: the market has recognized that the home is a clinical variable. But a recommendation report, however quickly generated, is not a measurement. None of these tools has published inter-rater reliability or validity, and none produces a score that can be tracked over time or rolled up across a program.
It is a standard already at work. The Ratings are in use by public agencies and community programs across the country, from the NYC Department for the Aging and the Virginia Department of Aging and Rehabilitative Services to Area Agencies on Aging, Centers for Independent Living, and housing organizations in more than a dozen states, and they are taught in university occupational-therapy programs.
I say this not as a boast but as a matter of public record, because the alternative to a shared standard is the status quo: a country making billion-dollar decisions about home modification, hospital discharge, and long-term care with no common way to score the environment those decisions depend on.
What becomes possible
Imagine home accessibility treated the way healthcare treats every measure it respects. Agencies score every home in a program and direct funds to the highest risk first. Funders see before-and-after evidence instead of photographs and testimonials. Researchers compare interventions across states because the instrument is the same everywhere. Discharge planners know, before sending a patient home, whether home is ready.
None of that requires new science. The instrument exists, the validation is published, and the field data spans thousands of homes. What it requires is a decision, by the agencies, payers, and providers who shape this system, to stop accepting opinion where measurement is available.
You cannot improve what you cannot measure. For the home, the excuse is gone. The measurement exists, and independence, for the first time, is something we can count.
Carolyn Sithong, MS, OTR/L, SCEM, CAPS, FAOTA is the founder and CEO of Home for Life Design® and the creator of the Home for Life Design Accessibility Ratings®, a standardized, research-validated measurement of home accessibility and independent-living readiness. She has spent 25 years as an occupational therapist specializing in environmental modifications, and her work is used by agencies, universities, and independent-living programs across the country. Learn more at homeforlifedesign.com.