Monitor the topic for updates.  

More property owners should understand that rentals are NOT a passive investment like mutual funds.Issues to Monitor (politely)1) Monthly P&L Report - if they don't consistently send it around same day each month, they are not organized and it doesn't bode well overall2) Monthly Owner Draws - should come about same day each month, hopefully via ACH, with statement showing how calculated3) Maintenance - question EVERYTHING! 

Hello, We have come up with a way to digitally monitor the electricity use of each unit and email them each the bill every month.

Those residents have regular home health care visits and the homes are equipped or oxygen, medical monitoring, access by contracted professionals (meal delivery, nursing, physical or occupational therapy),etc. the residents have private bedrooms and bathrooms but share living and dining areas. 

It's not smart to put all your eggs in 1 basket - who's going to monitor them?  

However, for rentals, you do need to have someone monitor and add water to the system.   

I also monitor Colorado.gov for state issues and every Realtor associations.

If they're relatively small, open concept and 1 story then you could do a vented gas rinnai monitor heater.Or if it's more cut up and you've got high ceilings then you could run a forced air furnace with the duct work at the top of the ceiling w/ a drop ceiling below to hide the duct work.

I acquired a property in Illinois that had higher levels of radon and it was as simple as putting down sensors to monitor. 

I don't want to rely on guests to monitor the levels.