Simply put, get a real estate license. 

Was it simply experience, or were there particular resources that were helpful to you? 

Plumbing, tree pruning, land slope, electrical, and many other major issues can be identified with an inspection.

If I narrowly look at ROE, does that simply ignore the upfront cash investment and just focus on my efficiency of current equity position?

Very simply, multifamily spreads out your risk if a tenant moves out generates more income with more units and disproportionate amount of increase in expenses as there are more tenants to deal with.

I'm simply stating what we have been told to put into these homes lately.

@Timothy Blackman With probate properties, heirs are typically looking to simply cash out, not carry any financing.

If so, is the gain simply divided to 50:50 between 2 units?

Very true, you make your money when you buy and that formula is dependent upon your search abilities, how big of a net you cast to find opportunities, your negotiating skills, your ability to identify great locations (often near good schools), and your ability to transform the property.

Last night, I learned that there's a problem with the home: during the inspection, six gas leaks were identified, and repairing them will cost approximately $7,500 in labor and materials.