It's for like minded individuals who have a lower chance of a catastrophic health problem.

the more clients they have, the less hours.Now... do you think a marketing company will devise, create, and come up with unique, individual marketing strategies for every single website?

To make matters worse a lot of them are not individuals but rather companies submitting evictions and so there is no point of targeting those.

When you file your first US tax return, you will be issued an Individual Tax Identifier Number (ITIN).

Each room could be rented to an individual: Active Duty/Reserve/Guard, college students, young and single professionals, etc.I spoke with a highly recommended property management firm, and they said they only rent per unit, not room.

All applicants intending to live in a unit must qualify individually.

At the end of the day I realize I should go to an attorney for advice and help setting this up, but was hoping to get some initial feedback to have an educated conversation.My initial thought was to create an LLC for each individual property, and then one for each of of the siblings.  

Our biggest problem with an individual PM was when the PM had personal issues -- family problems, illness, to a lesser extent, vacations  -- while I know it is insensitive to say so, our properties were quickly bottom of priority list (likely rightly so when someone is dealing with a severe family illness), but their assistants could not send payment, only the licensed PM can handle funds, so I did not get payment for quite a while even though the tenants were paying rents on time. 

I don't know how to respond to each individually so, Roman M.   

I have done property management for two individuals and when the last one sells I will be done.