Today we have Airbnb, back in the day there was taking in lodgers. The day being 1940, 1930, 1920… you get the idea. There also use to be things called boarding houses, where you could rent a bed, in a room that you shared with other people. You can do that too on Airbnb, but I haven’t tried it and haven’t been desperate enough to take that option.
People were more communal back then.
Anyway, you’d be hard pressed to find a rooming house in DC or anywhere these days. But they were an affordable form of housing for singles, when all a person needed was a warm clean place to sleep. It was common enough in the past that such living arrangements would pop up in fiction and radio plays of the early 20th century.
I remember back when I was little, in Florida, hanging out with a kid from (elementary) school and her family lived in a boarding house. A family of 3-4 in one dark room in the back of a two story structure. I gather they could not afford to rent a house, and apartments were not a thing where I lived. That house was torn down some time ago.
I’m not calling for the return of the rooming house. As a resident, I’d resist one coming into my neighborhood. No, I am just reminding readers of a type of housing that existed and is no longer an option. I think as a society we are slowly removing affordable options, even as we complain about the lack of affordable housing.