House Number - S4.E22

When Pearl, Mary, Rose and Sandra get locked into the laundry room, they all reminisce about how they each arrived at 227. Pearl moved in with her mother, Rose lived across the hall from a loud rock band, and Lester had just lost his job at a construction site, while Mary was pregnant with Brenda.

Lester eventually finds them all in the laundry room and opens the door so they can leave. By that time Brenda and Calvin had joined the 4 ladies.