The biggest factors, from what I can tell, are age and rebuild cost. 

They are mocking these up with interest only loans and factoring back in the tax deduction as if you qualified for the tax benefits of a real estate professional and factoring in the diminished first year property tax (since its not a full year).

The precise property forecast can vary depending on a lot of factors but the general demand is really what you should use the tool for to make your plans. 

While turnkey properties are more commonly used for DSCR loans due to their immediate cash flow, fixer-upper properties can still qualify depending on a few factors. 

This reminds me of how Alex Hormozie describes "the value equation"; Experience in this case is the factor that determines the likelihood of achievement. 1,000%Alex Hormozie is one of the greatest marketers not just alive, but ever. 

You also have to factor in time limitations.

Some strategies to get around are:1. leverage your current portfolio and buy in cash, increase value, and then refi2. buy Multi-family so your ratios aren't the main factor to lenders3. get in with a lender for high net worth individuals4.

HUD does not factor into the rent other amenities that might be included in the rent such as garage, basement, fieplace, central air, pool etc, that might command higher rent in the non-Section 8 market place. 

Their contribution depends on factors like local demand for ADUs, their design and size, and how they’re used (e.g., rental income potential).

This conveys confidence and ensures you don’t end up overpaying or taking on unfavorable terms.Negotiate More Than Just PricePrice isn’t the only factor in a deal—other terms can often be just as valuable.