You must monitor things. 

We have more control of the expenses and we monitor our propertys closely We know our tenants and know how they keep our property  We have 5 Duplexes right now.  

I have no idea why any decent investor would spend all the time and effort it takes to monitor and correctly work the velocity of money method to pay off the loan with the lowest interest rate when they could instead use that extra money and energy to create enormous wealth.

Biggest job 'permitted' by my town was the complete design, install & wiring/flow rate monitoring of complete fire sprinkler system for a 6 unit.

Even if "[m]ore tenants are likely to download movies that use a lamp to do something illegal", I am no more liable for one than the other.Now, if you are going to monitor your tenants network traffic and become aware of illegal activity, that changes the situation [never mind, that you would be breaching privacy law yourself].

Get yourself CCTV system and monitor it.Pay the summons, and here in NYC, there's additional penalties when you pay late.

Then work on executing your plan and monitoring you business.

These kinds of transactions continue to take monitoring and a careful eye.

You could monitor the taxes and insurance payments yourself.

He instructed me to monitor his calls which I didn’t even know was a feature on the calling software.