| Yes, since he has lived there 20 months on his own, any old lease has no bearing at all, all would have expired. He as noted is on a month to month rental, which is basicly verbal.
And no the late fees don't seem excessive, when you rent in normally lower income rentals, the late fees are normally higher to help force payment on time. But the fees are what they are, and your son has or had the right to move out if he did not like it.
The fact it is run down has little to do with his being late at this point
Even if you went to look at the condition, the rent still has to be paid into a escrow account set up and the owner notified. But I am not sure poor paint and carpet will rate not paying the rent anyway.
Esp if they he ( and her) lived in the place for 9 years, there is some normal wear and tear.
He can give notice 30 days he is moving, and they can give him a 30 day notice to move |