Maintaining a clean and sober atmosphere at all times is the one and only prerequisite for occupancy in a sober living facility, and failure to do so will result in immediate expulsion. Aside from that one guideline, there aren't a whole lot of others to adhere to. There is a good chance that the majority of residents have already completed a treatment program, and it is likely that these kinds of living circumstances are best suited for people who have already achieved and maintained a certain level of sobriety. There is a good chance that the majority of residents have already graduated from a treatment program. Some of them are self-contained homes, apartments, or condominiums, while others are located on the campus where treatment for addiction to alcohol and drugs is administered. The number of available beds in a facility or the square footage of a home are two parameters that can be utilized to make an educated guess about the maximum number of people who might be able to dwell in a given location.