Granted you could use documents and cameras to protect you.

Online rentals, security cameras, etc.

I have a wifi camera on the entry/driveway of each home (used to be ARLO, now WYZE) A wifi connected front door lock, Honeywell wifi thermostats, PHYN plus smart water device and leak sensors near the boiler.

Though there are lots of tools- plumbing digital cameras to see inside of everything for example; however, I don't see machines doing stick built houses in a myriad of a million situations, yet.

Mine are in a third world country so for $4/hr they’ll set door codes, message (or call) guests, schedule cleaners, adjust the thermostat, monitor my cameras, call a plumber, etc.I too often spend around $99/mon per property but I can’t imagine you’d get the same level of quality & service that I do for that $99/mon price domestically

And then there were cameras. 

Keep a camera handy to take pictures of problems as they come up during the reno to post here.

The police even took the SD card out of my Harbor Freight camera set up to cover their actions crazy right?

She sent me RING camera footage, and I can see over 15 people running back into the house after a MASSIVE fireworks explosion goes off at ground level.

I am now looking for an outdoor security camera that doesn't require wi fi.