In an attempt to extract some responsible behavior from my boyfriend's 19 year-old irresponsible son, who had been living with us rent-free for several months, I recently established a lease with him. I am the legal owner of the house. The term of the lease goes through 1/31/10. At that point, I plan to terminate the lease because he has failed to meet the terms of the lease and I do not want him living in our house anymore. I am trying to avoid the hassle and cost of an eviction. What are my rights if he refuses to vacate? Will I then have to go through an eviction process anyways? Can I change the locks, even if his possessions are still in my house? What are my rights in terms of disposing of his (considerable) possessions?