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It sounds like these people are squatters. You say the house belongs to your grandfather, so your grandfather certainly may object to these people's presence. If you have authority to act on behalf of your grandfather, you may give notice to move out; if they fail to move out, you can bring an unlawful detainer action to evict them. Be sure to consult your own attorney to protect your legal rights.Ask a similar question
Consult a local attorney. I would simply change the locks. They do not seem to have any legal right to stay there. There was no lease or contract at all.
IF YOU FOUND THIS ANSWER HELPFUL PLEASE MARK IT SO. This information is provided by PEGGY M. RADDATZ, Attorney At Law as a pro bono service. YOU SHOULD CONSULT WITH AN ATTORNEY IN PERSON who has specific expertise in the area of law you are asking about.Ask a similar question