Someone left property at my house for about a year and wants to get it now. Can I tell them no, and keep it.
I am assuming that this is all movable personal property. That is it is not connected to the house, e.g., cabinets or other fixtures.
If the prior owners intended to abandon the property is yours. If they just left it, it is probably still theirs though they may owe storage costs. It is probably not worth litigation over the issue. Absent a WI statute, the property may still belong to prior owners.