Once we get in the door up here I would like to start inching down towards Austin.

The refer door, other than the tiny dent a couple inches off the floor, appears that it would simply buff out, so again, just that dent, probably not beyond "normal" in the Court's eyes.

She even seemed grateful that we were setting the fence 10 inches off the property line.

It is on the side of a hill and when it rains heavily the water comes down the hill and rushes down the street right next to me and my patio always fills up with several inches of water.

Inside four-inch corner knives are also your friends.

"There have been some separation of the retaining wall at two of the joints causing some displacement of about an inch."

In my experience, if you give an inch to deadbeats, they take a mile (so yes, she may well keep coming back).  

If water rises from the city storm system, the water will have to rise that extra 12 inches to get into your basement. 

It's essentially barn board that is gapped a few inches and over this typically cedar shingles were installed. 

I have found a couple of devices which seem to do the job:https://www.amazon.com/bluebot-Universal-Detection-Tracking-Required/dp/B08V9DKFR3/ref=psdc_3180231_t1_B08DX6MP8X https://www.amazon.com/Moen-900-001-4-Inch-Smart-Shutoff/dp/B00C03D01QInstalling multiple meters is a non-starter due to the price.