We are living in the main front house and renting out the ADU to a tenant.My question is, other than having landlord insurance on the ADU, a solid lease agreement, and a 3rd party management company as intermediary to help manage repair needs/requests (my partner and I both work full time jobs) and showings when the unit is vacant, is there any legal entity protection or other avenue that will protect us further in case of a tenant lawsuit? 

Have you challenged them on this and requested that they refund the fees?

In addition, they are not allowed to knock on doors or attempt contact the tenant unless requested through the owner or property manager.

This potentially caused us to lose out on a few other tenants who were ready to begin the lease ASAP, but we decided to go with this couple because they had better credit scores and financial situation.Does anyone have any advice on ways to prevent this from happening, such as including a fine for people backing out or requesting the security deposit upon signing of the lease?

Just sent u a connect request.

I made requests to the seller under our DD period and they flat out refused everything, even safety issues.

If not, perhaps you can submit your draw requests in advance knowing they take 7 days.

I sent you a connection request please feel free to send me a message.

You can request the history from the utility companies but keep in mind that if there were high vacancies the utilities would be understated.

I found this tenant on furnish finder and reached out and responded to their housing request.