What is the legal age in California to leave a child home?

The legal age in California to leave a child home is 9 years old. There is no legal age set for leaving a child home in California, but there are guidelines. The legal status of leaving a child home alone all determines whether there are any disturbances within the neighborhood as a result of the child being left home alone. This means that the child must be both responsible and trustworthy in order to be named LEGAL.