Too many low income apartment buildings near by / vacant buildings. 

To collect all rents and other income from the Property and promptly and directly deposit suchrents in XXXX's Pooled Trust Account.3. 

.: Quote from @Jay Hinrichs: having been a back room vendor for Montelongo  Vertucci  rich dad poor dad.I got to interact with hundreds of students.. its like anything RE related only a little worse than say RE agents .. 20% of RE agents make 80s of the income

Your improvement of an ADU unlike those other improvements provides house and substantial additional income compared to other improvements. 

I am just a guy who tends to give illegal advice, I guess.And finally, folks need to be aware that while many travelers pick the nomadic lifestyle for some of the awesome reasons: travel, excitement, variety, some pick it to try and increase their income to a level where they can earn their way out of terrible financial situations or decision making.

Another option is investing in real estate through partnerships or fractional ownership, focusing on properties that yield cash flow or appreciation potential.For long-term growth, consider diversifying into assets such as private equity, tax liens, or even certain types of real estate that offer both capital appreciation and income potential over time.

I am assuming that this means I can deduct interest paid to original lender and report the interest I received from buyer as income like Ashish mentioned? 

As noted above, up to 50% of gross rental income normally gets eaten up by expenses (taxes, management fees, utilities, landscaping, repairs, capex, etc).

Meet with a local banker & schedule a time to talk with a mortgage broker, they'll give you at least a baseline of what kind of down payment options and rates are out there.After that, if you're still wanting to research more creative options, do some looking into seller financing (a very hot topic with good, and bad, advice out there), look into private lenders, and commercial financing options.If you're wanting to live in 1/4 of your quadplex, then conventional residential loans may in fact be your best option as you can purchase that with a fannie/freddy loan with very low down, and use up to 75% of the income from the property toward your own income. 

If this were a Real Estate secured note,  a note broker or flipper might offer you up to about 65% of the remaining balance whereas an investor who is building passive income streams week offer up to about 90%.