My worse appreciating property has appreciated ~$1.9k/month over the hold period so I recognize that I am likely to achieve at least this level of return over the long term. 

If the numbers don't work and you mistake them and think that they do, any buyer would recognize it and you would never even be able to sell it. 

Property is generating income, but regular conventional loans do not recognize the home nor the income being generated.

@Stephan Precourt  Do the units have different mailing addresses as recognized in records/post office etc? 

In the absence of comps, recognize there is not much clue as to how it will appraise.As for an unpermitted ADU, I suspect that if the appraiser can easily note that it is unpermitted it will not receive much of an appraised value.  

Ohio is recognized for its healthcare system, with 11 nationally ranked hospitals providing more than 81,000 jobs3.

Arizona’s economy is diversified across high-tech industries, and with a simplified tax system, booming employment growth and surging population at an average of 238 people every day, the state is nationally recognized as one of the best places for business.Taylor Morrison (a client of mine) has enough land to build for the next seven 7 years.

The thing is though, if you get a genuinely good deal then the deal will sell itself (of course, with your push on it.)

Been reading through Brandon Turner's Rental Propery Investing book and I recognize that my network is nonexistent in the realm of real estate.

Be sure to be genuine and original on your approach, being you is the biggest advantage of personalized letters.