I do not understand your remark as related to the DSCR loan.  2 ADUs are not allowed by f/f conventional financing but is not always enforced.Fortunately if you stay with the current tenant without a refi, by the time you pay principle it is likely the rent will have increased enough to absorb the increase mortgage payment. 

That's bad.Personally, I would look for another property manager who understands the importance of communication.

I just came across the idea, but don’t quite understand how it works or if it would be worth pursuing.

I hope this helps you have a better understanding. 

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.Make sure you understand the Class of properties you are looking at and the corresponding results to expect.The City of Detroit has 183 Neighborhoods we’ve analyzed.DM us if you’d like to discuss this logical approach in greater detail!

You don't need to know everything to get started; you need a foundation to build on, and the rest will come through experience and then refining your education.You can build a basic understanding of investing in 3-6 months.

Ensure you fully understand the fees, interest rates, and any potential prepayment penalties.4.

@Barbie Steele I want to make sure I understand what you said so I can apply it to my situation.

From my understanding a single family with an ADU still classifies as a single family, NOT a duplex. 

Market insights and understanding the rental rates in the neighborhood.