Unfortunately, since your roommate has established your home as his residence and he refuses to leave voluntarily if you want to force him out you will need to utilize the Judicial eviction process. This process starts with proper notice. If you are unfamiliar with the Colorado FED process I can help. We handle evictions on a flat fee basis. You can schedule a free case assessment here: /locations/make-an-appointment/ Or call 303-688-0944 and ask for a free eviction assessment, we can do it over the phone and get started immediately.