I pay, I think, $180 for them to come out and run the camera down the line and tell me what they are seeing.

The third attempt was thwarted by cameras watching the units.The problem is that condensers are usually put out of sight, which makes them easy prey on an empty house.

How there happened to be someone there with a camera I don't know.Check out foreclosure.com.

If you want security cameras and motion lighting just by a little shed with solar panel on top so you don't have to tap into the utilities. 

Just last week, my usual plumber was away so I scrolled through my camera roll and found 3.

Be proactive , pay to have a camera run down the sewer main to check its condition . if it all looks good you are fine . put a clause in your lease that the tenant is responsible for clogging the sewer line .

Install exterior and interior wireless video cameras that are motion sensitive. 

Make sure a static test and camera test (if static test fails) are done to test for any plumbing breaks.

.#2 Install wifi or bluetooth based locks to the units/rooms so that your guests have time stipulated acess to the unit/room#3 Install outdoor security cameras or doorbell cameras (if possible) to monitor hotel outdoor premises via online.#4 Hire a runner (like a college/high school student or young guy in search of part time job who charges reasonable hr rate) to inspect the room after the cleaning staff cleans the room or you can ask cleaners to tickmark the check list , share photos/videos of the cleaned rooms and share them.

Install a camera system in the home?