Finding deals is completely new to me so I'm just testing waters here.Do you or anyone else you know knock on doors in this manner?

I would just test the waters and maximize the one that is producing the most for you. 

I think it was Covid but they wouldn’t test her.

My experience was that we needed to get the water tested by the state once per month. 

Keep adjusting purchase price till you come to an ROI you are comfortable with, that's the Make-An-Offer number for you to her, test it, verbally first, don't get into a contract yet, then if she accepts the verbal offer.Step 4: Find a way of getting into that house to conduct a walk through or let the tenant or landlord conduct a video walk through or take detailed pictures of each room.

FHA requires “self sustainability” test where 3 out the 4 units’ rent has to be cover the debt service.

Since the inspection contingency was waived you did not have an opportunity to test it.  

I have popcorn ceiling that tested positive for asbestos and want to remove it. 

Maybe even at night after it passes the day test

But I reckon he'll build the factory first, 'test the waters' of TX life before moving HQ.