Means that over a dozen people (19, I'd heard) are out of a home. I'm being selfish in thinking of the place from my perspective: I just ate there a lot, for the year that Big-Ass Sandwiches was a brick-and-mortar. But it was an important place for me. It was a really important place for my friends who opened their restaurant. And it was an even more important place for the people who were living there.
And it might not be there anymore, after this.