You would also face discrimination charges if you limit properties to male or female only. https://www.justice.gov/crt/fair-housing-act-1Personally, I would avoid renting by the room, because it puts too much liability on a landlord.

Simply because they are innocent and cannot help themselves like a full grown adult

Well a rooming house properly run will never have vacancy but its running one such that you don't get shut down by code enforcement, then you owe the morgage and no income.The zoning that is common is;  3 unrelated adults. 

@Adrian GrauerSince you cannot legally get into a binding contract, I would suggest you start bird dogging or partner with an adult over 18 so you can wholesale.  

Originally posted by Will Russell: Thanks Joe, The seller is an 87 year old lady going into an adult home and I didn't want to see her get her assistance taken away from her.

I've been in sales my entire adult life, but I've never seen a three day sales job.

Usually, posting on the door will do or delivery to any adult occupant.

What do you call a female cow??

It really depends in what kind of look you're going for.Don't ask me, you need to ask females.

Am I reading this right that the daughter is an adult?