Illinois law requires that individuals conducting or transacting a business under any name other than the real names of the owners must file an Assumed Name Certificate with the County Clerk in the county in which business is located. If the business will be incorporated, a corporation, or an LLC, file with the Illinois Secretary of State, not the County Clerk. Rock Island County Clerk: (309) 558-3569. Illinois Secretary of State Department of Business Services: (217) 782-6961 Retail tax information, City Finance Department: (309) 732-2000 A Special Use Permit for businesses that are located out of your home may be required. Please contact the City of Rock Island Zoning Department at (309) 732-2900 for more information. A Change of Occupancy Certificate for any structures that will be used for a purpose other than that which it was originally constructed may be required. Please contact the Building Department at (309) 732-2910 for more information. A Food Service License is required to operate any food and beverage establishment. Please contact the Health Inspector for more information (309) 732-2910. For all other business licensing and permit related questions please contact the City Clerk at (309) 732-2010.

You might. It depends on several factors, such as the type of sign and the specific location of your business. For example, if your sign is free-standing or electrical, it would be a different situation than simply having a wooden sign attached to the face of the building. The best thing to do is call the Zoning Department at (309) 732-2900 and discuss your particular situation with a Zoning Official. Permits from the Building Department may also be required.