Cases have been tried in Orange County, California, which prevent locking up the homeless, unless here is a specidic facility.
So jurisdictions are finding sites. But the usual NIMBY objections arise.
It is generally known the subject individuals will not remain in such places, with their rules and regulations; eg. curfew, drug testing, no drugs/Confinement.
In California, adicts/alcoholics are deemed to be "disabled, thanks to "softer, gentler GHW Bush's ADA categories.
IOW these people are conssidered a "protected class."
Chances are looking at Vancouver BC indicates what is next for Seattle, San Francisco, Lost Angeles, and
YOUR AREA, TOO.