This was probably Debra's address before she disappeared. A lot of those public record sites are notorious for having outdated information. I've found quite a few missing peoples old addresses on there.
It would be shocking if this really is Debra. However, according to a Facebook page set up for Debra, there was a post in 2018 detailing potential sightings of a homeless woman that resembled Debra in South and East Tacoma. There were comments of a few other people who also claimed to have seen her.