Please everyone .. do NOT do thisLet me visualize what you are telling others to do.So logically, this doesn't make sense.

I looks like the former, based on the following definition --"The term placed in service means the time that property is first placed by the taxpayer in a condition or state of readiness and availability for a specifically assigned function, whether for use in a trade or business, for the production of income, in a tax-exempt activity, or in a personal activity."

Once you have a shortlist, sign up for an account with each one and test them extensively to see how they function.

Or maybe, that's just a function of suburbs in general, where they are designed to be comfortable (so defacto, no small multifamily)? 

Source: WikipediaSustained and significant population growth: Prices and rents are a function of supply and demand.

Quote from @Alex Rodgers: Hi everyone,Cash flow is just a function of what down payment you use. 

-reliable "handyman" who can deal with minor repairs (make sure licensed and insured)-tenant self-inspection app or use third party service for inspections-vendors to service home functions, e.g. plumbing, electrical, HVAC, etc.

Cash flow is a function of your leverage. 

I would check the median income of the area.It is a function of price and return on effort.

The answer is probably simple and I apologize but my brain isn't fully functioning after staying up all night running numbers.