Tenants made an agreement with unknown person that is not the recorded owner (owner has been foreclosure and move out). There is no written lease agreement. Tenants said they already prepaid the landlord (cash) and currently landlord moved to California. Can they evicted immediately for "illegal tenant" or/and trespassing? They can be someone who knew that the house is vacant and decided to move in while the bank doesn't know or assume that the owner is still living inside the foreclosed home. They are not the owner and landlord is not the owner.
A rental agreement is a contract outlining terms of tenancy for a certain period of time. Short-term rental agreements may renew automatically until cancelled.
Landlord-tenant law is governed mostly by state laws, and covers issues like security deposit limits and deadlines, evictions, and the right to withhold rent.