Unless he is paying rent, it’s your house, your space, your rules.
It doesn’t matter if he is paying rent. It’s STILL the father’s house, the father’s rules. Tenants do have to adher to a landlord’s rules, regardless. Just because a person may be paying “rent” doesn’t mean he has full license to use the property that is SHARED with others in any way he wishes. If he wants to live there, he must agree to abide by the rules, and if the rules are that he has no sleepover female guests, those are the rules. Tenants are entitled to “quiet enjoyment” of their rentals. They aren’t entitled to blatantly abuse the trust of the landlord.
If the son wants liscentious freedom, he should go somewhere else and pay what it’s worth to him.
What does rent have to do with it? Unless the gf is homeless, she doesn’t belong there at all. If she’s homeless, she still belongs in her own room with the door locked and WITHOUT company, and she can pay rent when she’s able.
Sign me: Mom of 4; grandmom of 10