It makes it simpler to say no, to enforce something, as you are just "supposedly" working for the landlord and just doing your job.

Talk to the people that enforce the rules and see if there is a way to do this without breaking the rules and getting in trouble.If not, then just don't do it.

California, to my pleasant surprise passed a new law that went into effect January 1 that allows property owners to file a Letter of Agency with local law enforcement which notifies them that the property is vacant.

Tough one....On the one hand you want to enforce rules.

For example, certain liens will not go away such as property tax liens, code enforcement liens, certain city liens, etc.  

If they are VERY professional, they will have their processes in writing as verification that policies are enforced equally and fairly by their entire staff.6.

You think they just don't enforce it anymore?

Since then HOAs have learned and are experienced in enforcing their rules, regulations, and declarations.  

It's possible the deceased father agreed to let her manage the property and keep the rent net for her troubles, but the title/ownership remains in him so his heirs would inherit it as a legacy.I suggest your friend familiarize himself with the statute of frauds which I believe requires agreements regarding real estate be in writing to be enforceable.

If you struggle with creating a strong agreement and enforcing it, then you may be better off hiring a property manager.