They're highly popular for turnkey rental properties because qualification is primarily based on the income generated by the property itself rather than the borrower.

You need a lot of units under management to pay a maintenance tech 40 hours per week.When determining when to hire a PM or ops team member, that greatly depends on how much revenue your units generate.

When I use AirDNA I do not focus on the algo generated number too much, rather how are the most comparable units doing. 

For example college rentals generate some of the highest ROI of properties I come across in New Jersey but it depends on the school and location of property.

While they generated some cash flow, I found the effort required to manage them wasn’t worth the return.

Key Questions to Ask YourselfProperty Cash Flow: Will the property generate sufficient cash flow to cover the monthly payments, taxes, insurance, and other expenses?

The question: A commerical property in a highly desireable location which could fetch $6+ million and generates about $400k after expenses became available and I'd like to add to our portfolio instead of doing a 1031.

So YES, the math is VERY clear and well documented for decades upon decades upon generations.

If not I understand and will work to generate a contract that encompasses all of these elements. 

With 4 rentable rooms (including the basement), I expect to generate $3,600/month with full occupancy.