At my rentals, it's already a lease violation, because my lease prohibits it.I lived at a triplex where I rent out the other two units, where I see strangers come and go.

Did you present any official documents to her notifying her of the change in ownership.If the first she heard of any potential sale was a knock on the door and a stranger saying "pay me", it's not odd that she's refusing to pay. 

Are your high end neighbors going to want strangers who are likely ringing heavily in and out all the time?

Be aware that most of the sellers on the Internet are crooks who know that emotion and fear make many sales and they are too far away to be confronted and are strangers. 

(Property was leased and she didn’t have strangers coming through 10+ times with her having to go out of her way to be there).

You are turning over an asset worth hundreds of thousands of dollars to a stranger. 

Now I am a beginner also and still searching for my first deal , but I’m no stranger to business and negotiations.With any negotiation the the keys are communication and transparency.

Just the thought of knocking on strangers doors unannounced sounds scary in my opinion.

I am no stranger to construction and estimates .I do have a question.

Young 👧 asking to meet up with strangers not a good 💡.