I am a property owner in Clackamas County Oregon, My building houses three business, mine a second long term tenant and the PROBLEM TENANT takes up the last 1/3 of the building. He has exceeded the 10 day period to pay rent, it is (was) a market and small restaurant. He has not been back to the space for several weeks. I am preparing an Unlawful Detainer now to file with the clerk of the court. Can I change the locks at this point or do I have to wait to go to court? There are other bill collectors, equipment lessors also showing up at this space looking for him. I feel that the security of the building and the remaining tenant(s) is at risk to this person if they do come back. I would prefer to have the locks changed as soon as possible. What do I do with his equipment?