Actual possession usually occurs when the police catch you "red-handed. This means that there must be a court judgment, order, or decree already in place that entitles a party to possession of the property.An unlawful detainer proceeding is an accelerated method for recovery of possession of leased premises. In California, adverse possession occurs when the adverse possessor has been using another person's property openly and notoriously for the statutory period. You can serve the Summons, Complaint and a blank Prejudgment Claim of Right of Possession (CP 10.5) on one of the defendants on behalf of "unnamed occupants. These convictions will result in a lifetime ban on firearms ownership or possession. Please fill out the form and someone will be in touch with you shortly. Can I appeal a claim of rights to possession judgement? California. I filed a claim of right to possession and was about. This guide is designed to help you fill out the forms yourself.