Iowa Code § 138.3
Written application to operate a migrant labor camp, or portion thereof, shall be made to the department upon forms approved by the department at least sixty days prior to the first day of the intended operation of such camp. The application shall state the name and address of the person requesting a permit; and name and address of the owner of the camp, or portion thereof; approximate number of persons to be lodged in such camp; approximate period during which the migrant labor camp, or portion thereof, is to be operated; the location of such camp, or portion thereof; and any other information required by the department. A separate application shall be submitted for each camp, or portion thereof, and a separate permit shall be issued annually for each such camp, or portion thereof.
Iowa Code § 138.3