Tenants bullying on site parents

[Cindy Chan]

I have a 5 unit property where there is a family that had been living there for over 5 years. They are good tenants. One of the units is occupied by my parents who do not own the property. My dad is very handy and serves as my handy man most of the time. These long term tenants are good so when a unit opened up and they asked if we can give special consideration for a relative with bad credit to move in to a recently vacant unit, we did (after background checks of course). And then a few months later, a third unit was also also rented to their relative under the same requests. The 2 relatives who moved in were not as great as them. We start issuing lease violations to them, and every time, they use each other as support and making false accusations against my parents that live on site saying they are doing illegal stuff like entering their unit while they are not there and somehow privacy issue of my parents spying/watching them in retaliation. Entering their units is totally untrue. I don’t know what to say about the privacy issue. My parents live there and have rights to look where ever they want. Plus I have video surveillance in common areas. I am really regretting renting  over half my property to the same family that is bullying my parents. I am located in Bay Area, CA. Any suggestions on how to handle this situation? They have had numerous guest violation where someone was living with them not on the lease for months at a time, plus numerous parking violations and their kids/guests doing prohibited things in common areas. Of course I only come to know of these things through my parents, so I think this is where the privacy issue stems from. But all these are actual violations of the rental agreement. Any suggestions on how to handle this situation?