In my case, I have residential rentals in one LLC, commercial properties in another, self storage in a third, and my real estate company operates in a fourth.

Most ADU's are one bedroom units and rent accordingly.

@Tamika Davis One of the biggest advantages of most software on the market is to complete these tasks you mention (maintenance, leases, rent collection, etc). 

This is a complex question that will not have any one answer.

You are not useful with one multifamily to the best property management companies.

Might be a little bit down the road for me, but that is for sure dream that will come true...One Chicago's best features is the lake, which I'd like more access to.

They're $99, rated 4.5 stars and I've never had a problem with one. 

I’m not looking for a step-by-step guide, but I know I’m not the only one in this position.

How many micro units will you have in that one house?

I am adding about 20 more this year, but there's one small pocket I'm struggling with the financing on (honestly, due to Huntington Bank dragging their feet on items, etc.), so I'm seeing what other options there may be.