CITY OF RIVERSIDE USE ONLY - DO NOT WRITE BELOW THIS LINE. Para más información llamar al (951) 826-5465.Who must obtain a seller's permit? What does engaged in business mean? A "Notice to File Online" will be mailed out in February, which will include the information necessary to file your property statement online. The sale of a trade or business for a lump sum is considered a sale of each individual asset rather than of a single asset. Please complete the following business information.