doors need to be power washed, gutter needs to discharge further from foundation (deck is uneven and breaking, possibly due to water erosion?)

Third unit is a studio/efficiency that I will live in. 

Side note; if you google 46218 the only photo that shows up is a gross water damaged basement. 

Wood Floors not sealed, tile not properly installed and grouted, cheap flat paint that the tenants can't wipe finger prints or food splashes off, countertops not caulked so water gets behind causing water damages, the cabinets were painted over not replaced the list goes on and on.

What is the best overall water metering company you have found when it comes to ease of installation, reliability, and the cost of the equipment and monitoring?

Subtract $350 for HOA dues, maybe another $400-$500 for electric and internet, and potentially water bills. 

I grabbed my multi meter and showed them the voltage in the water . 

Shared laundry meant a fifth utility meter and high water costs that I paid.

and deal with power lines, water lines and sewer, maybe seal the well. 

We've installed the Moen leak detection device, which detects leaks both hot water and cold water, and monitors water usage and gives you weekly reports.