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Your license is current for the license year in which you obtain it and must be renewed each July 1 as long as you are in business. A 25% penalty charge and 18% per annum interest rate are imposed if license tax is not paid on time.
Every business must at least meet zoning and building requirements to ensure that its business category and site are compatible before signing any leases and moving in. Check with the County Zoning/Planning Department to make sure you locate your business at an address where it is allowed and that it does not heavily impact the neighborhood or require special parking consideration.
Also, if your business name is anything other than your surname or has more than one owner -- a partnership, association, or company -- you may need to file a fictitious business name with the County Clerk's Office, (925) 335-7900. Should you accidentally "infringe" upon another business, you may face legal action and will have to pay to re-file your Business License -- and that gets expensive. So, it is a good idea to do this before you apply for the Business License.
A copy of the fictitious name certification is required with your business license application.
A copy of your current State Contractor’s License is required with your business license application.
Treasurer-Tax Collector's OfficeBusiness License Tax Division625 Court Street, Room 100Martinez, CA 94553-0063 Business License Application
P.O. Box 631Martinez, CA 94553