house keeper
If you mean that a person died at home, in the United States you call 911. They will send out the Emergency Medial Team (EMTs) who will call the police who will call the coroner. The coroner will come and declare that person is dead and issue the death certificate.
You should install a chair lift in someones home when you think it is time for them to need help getting around their house. If it is convient for the person to have it in their home than you should install it.
You could write or call your family, sometimes just someones voice from home will help.
I would call such a person inhospitable.
Most people call them a homeless person.
moofer
Homeless
Freelancers
You follow them home.
Normal.
A Nommad
call police, contact a parent or guardian, call trusted person.