@Elijah WichersJust factor in the PMI when calculating cash flow.

It's Washington DC area so relatively insulated from market corrections, though if the sky truly falls and it happens to be right then, no real estate will be unaffected.I am not motivated to rent by greed, I am motivated by interest - have never done it before, and given that this property I already own and other factors make it conducive to renting- will certainly look at new opportunities in next market as well. 

We then apply a multiplier, which depends on the industry, competitive profile, length of time in business and several other factors. 

Loans are not factored in. 

Or maybe some other factor that I haven’t thought of?

Beyond these, it will depend on property location: you'll need to handle snow for vacant properties &  multifamilies, pools if properties have them, pest treatments in the south, etc.

Could you go in more depth in regards to the FHA sustainability factor?

Now, just because you may be doing well and be biased for your area and investment properties, I'm interested to play devils advocate and hear why these factors may not sustain themselves and why they could.

DTI is not a factor with commercial lending.  

Thanks for all the information.If this is primary residence, your capital gain will be exempt under sec 121 if you meet the requirements.If not, debt is not factored in when determining your taxes.