I'd guess it depends on where they live, and if they have brought their families to the area. I think Werth has a house in NoVa. Ryan Z will probably buy a house. I think Tyler Clippard and Drew Storen have an apartment close enough that they can ride bikes to Nats Park. The neighborhood around the Park has zoomed upscale, so maybe some of the players live a few blocks away.
Over the course of the last several years, I know of a place in S. Arlington where some of the "rookies" lived ... My niece and her boyfriend used to "chat" with 'em on occasion in the hall and in the garage.