I would say from when they are no longer able to look after them selves, wash, dress, cook and feed themselves..some leave cookers on and are a risk. If she/he is able to take care with out danger, them selves they are doing okay,I think rather than finding a home for them getting help to come to the home they live in is best , my mom went into a home ,it was not good , it would have been better for a caretaker to have gone into her house to help her. Good Luck