There are closing costs and you want to make sure you have money for the unexpected repairs as well as the expected maintenance.  

Paint, carpet, and artificial turf don't add any appeal to a renter they are maintenance.

The action of active management includes advertising and listing the property, screening and placing tenants, as well as collecting the rent and handling maintenance calls.

We've gotten into some pretty unproductive conversation about "how in the past 10 years he hasn't needed a sewer inspection" and how I "am routinely scoping up properties for BRRRR in Kansas City, and how a sewer scope was included for each property and actually saved me from bad deals" ... 

It is very common for PMCs to upcharge maintenance work. 

You may be able to get in residential SFRs or 2 to 4 assets with comparable yields..if you are going OOS, then make sure to scale quickly up to 5 properties to see the cash flow benefits in a couple of years..otherwise all cash flow will go in vacancies, maintenance and management expenses..

For example, unless heaven deferred Maintenance, a duplex shouldn't be anywhere over 40% opex. 

I figured it would be great as I would not have to worry about any maintenance and still get cash flow.

@Jonny Van Dyck are the higher end places easier to maintain or do you find tenants contact you for maintenance quiet regularly?  

Think of all the things that could go wrong and see if the lease addresses them: unauthorized pets or tenants, early termination, security deposit, lease violations, late rent, eviction, lawn maintenance, parking, etc.5.