All persons should stay home and away from others until there has been no fever without the use of fever-reducing medications, there has been improvement in respiratory symptoms (e.g., cough, shortness of breath) for at least 3 days; AND it is at least 7 days since symptoms first appeared, i.e., the minimum length of time will be 7 days.
Interim Guidance for Implementing Home Care of People Not Requiring Hospitalization for COVID-19
California Department of Public Health's Guidance web page
California Department of Public Health's Resource web page
California Department of Public Healths All Facilities Letters - 2020 web page