So any unexpected occurrence starts a domino effect with other expenses.

It's really no different than any other property- you need to get a really good comp on the house and not just an assessed value.

I also host three free networking events a month that are easy, no sales mingling with other investors as well as an education component. 

Any unexpected insights?

Clearly my expenses for the wooden siding maintenance will be higher than brick as will need to repaint and touch up every 5 years or less, and the service for the window units will likely be less (especially since my lease states the tenants are responsible for them along with appliance repairs under $150 for that rental) along with them being cheap to replace and fairly serviceable.You have to look at each component of a given property and estimate the maintenance for it based on what you know, what you have seen as best practice here, ways you can minimize or avoid the expense, and based on quotes that you get from contractors as part of your diligence period.  

Replacing a roof can definitely break the bank if it's unexpected.

Through some unexpected flow of energy we ended up in Vero Beach and signed a contract for a condo there.  

This is one of those good things in life that come along and are totally unexpected.

However it is accomplished, this auditing is essential as there is a requisite independent testing component to any valid AML Program, whether bank or nonbank, and now for affected retailers and community owners.

So your 25% ROI may not actually be that high when you factor in high turnovers rates, high property management costs, and unexpected capital improvements.