I used to volunteer at animal shelter in SoCal. Their screening was very extensive . At one point, they insisted that an adult work from home OR not work at all, which is why I parted ways with them.
However, I’ve had friends adopt from various other shelters. Yes, these four other shelters did their due diligence. The application process was lengthy and comprehensive for each of them, and three of four friends had home visits. Shelters these days in CA operate so much differently than 10-20 years ago.