To open a childcare center in California, you must obtain a license from the California Department of Social Services Community Care Licensing Division. In order to be eligible for a license, you must meet certain requirements, such as having a physical location for the childcare center that meets state and local health and safety standards, providing adequate supervision and care for the children in your care, and having staff members who meet state training and education requirements. You must also pass a criminal background check and a health and safety inspection. Additionally, you must have a written plan for providing care and activities for the children in your care, and you must have a plan in place for emergency situations. You can find more information about the licensing requirements for childcare centers in California on the Community Care Licensing Division's website.