When food is shared, you cover how you divide the cost. However, in some situations, roommates may minimize and ignore the extent of a roommate`s illegal activities because they think it`s okay. However, since most leases allow landlords to evict tenants for illegal activities in the dwelling, this can be a serious problem. However, sometimes, no matter how many checks you do, you can move in with the wrong person. Some people and their lifestyle can even put you at risk. This may be the case if your roommate brings problems into the house or interacts with other people who engage in illegal activities. 7. Who is allowed to use the parking If you and your roommate have both cars, we hope you will have access to two parking spaces.