This is a rapidly growing industry and several franchises are available. Because you are dealing with vulnerable individuals, you will need to be licensed (in my state it is through health and human services). You may also want to look into becoming a Medicare authorized provider. That way, Medicare can be billed for services provided to home-bound senior citizens.   For the person who mentioned problems with marketing, one way is to obtain referals from doctors, hospitals, clinics, etc., and to market through senior citizen centers.