Legal Question in Landlord & Tenant Law in California

It depends on the reason the notice was given. If it's for failure to pay rent, pay the rent within the three-day period. If it's because of nuisance, then you should stop doing whatever it is that's annoying other people. If it's just because he or she wants you out, you might be entitled to a 30-day or 60-day notice, depending on your longevity in the rental unit. In some areas, rental units are subject to rent control or rent stabilization ordinances. So check with the city's rent board, if one exists.