Traditionally, these would be a door and a window.Minimum ceiling height: At least half of the bedroom ceiling has to be at least 7 feet tall.Minimum window size: The window opening must be a minimum size, usually 5.7 square feet.A heating and cooling element: A heater (space heaters won't qualify) as well as a way to cool it down, whether that's by opening a window or AC.

I recommend you look into Southern Tradition Builders.

I am used to most RE investors starting with something a bit less complex like a traditional duplex and work up to a mixed use 5 unit.I include PM fees even when self managing. 

Recent discussions in Bloomberg and the Yale Law Journal shed light on the challenges posed by traditional zoning regulations and offer insights into potential reforms that could benefit co-living arrangements.Zoning Laws and the Definition of FamilyTraditional zoning laws often define "family" in narrow terms, typically limiting residential occupancy to individuals related by blood, marriage, or adoption.

To give a little more detail, I do believe all their cash flow is contingent on them getting you to pay upfront for their program, which I found to be inaccurate and unusable on anything other than a desk top, which I told them I do all my work on a cell phone (first red flag) that they didn’t tell me their property finder isn’t cell phone friendly.

Don't pass up free money.I admire your two-pronged approach between RE and traditional stock market investments. 

Unless you have discovered some hidden jewel, the traditional second home locations have all turned stale.

I've seen some people house hack a single family home by renting out the rooms, but keep in mind that traditional lenders would not be able to use the income from renting out the rooms (known as boarder income) towards additional income on the application.

Many don't come from traditional lending sources.

HELOCs on investment properties can be tricky since many traditional banks don’t offer them, but some lenders, and some local credit unions might be worth checking out.