Get paid! Wash hands. (Of situation) Run... Shut phone off, that order.
"landlord, who happens to be a lawyer, and electrician, and the plumber" AKA Slumlord.
I doubt it is legal anywhere to use what was probhably originally intended to be a Panel rm, or Utility Rm as a dwelling. Or for that matter have this person pay for common area useage. Seeing that there are 3 meters, and 3 units, she is paying one? Who is paying the other two? Two of the three tenants?
