The Arizona Department of Revenue (Department or ADOR) administers the property tax system in cooperation with the 15 county assessors, among others. Obtain notarized proof of the property owner's permission for use of the private property. 4.Fill out the Business License Application. The Act is a principled, practical solution that strikes a fair balance: it allows government to bar property uses that threaten public health or safety. Select from the list below to create a checklist pertinent to your particular business that will direct you to most of the business forms you may need. Personal property is reported on the Business Property. Statement (DOR Form 82520) for commercial business property or the Agricultural Business Property. Yes, a neighbor can typically put up "no trespassing" or "private property" signs on their land to indicate it's off-limits. There really is not a significant difference between the "No Trespassing" sign and the "Private Property" sign.