Focus on STR-friendly areas like Newburgh or Highland Lakes, and use platforms like AirDNA to assess revenue potential.

RE sales slows a LOT to generate revenue find a new investment.  

After I fill the last vacancy, the building will generate as much cash flow in one month as its predecessor would have generated in a year.There are so many other stories whose origins are with that same knock on the door, but this one's already long enough.

But its definitely one of the three issues.  500k houses should generate at least 10% of revenue all day long or you should sell the property there and buy somewhere else that gets that.I would actually guess if you're open to all areas, you can find something that hits the 12 to 14% revenue. 

During this time you are not generating any return from the money invested in the ADU.

Open houses are typically used to generate leads, not sell houses.

Your 1.2-1.4m new multifamily may only generate 8k in rent tops.

Your other levers are revenue (which as you mentioned is capped) and expenses (which congrats to you are low).

From day one I treated my involvement in real estate as a real business.This means, I had an advertising budget, a lead generating and follow up process, a back end process and money source and above all an experienced mentor.  

Let me add some new wisdom to this.Try not to see social media as "just another channel to try my luck".It is not a separate thing, especially doing SEO or paying for ads.When it comes to lead generation, it is not (just) about generating that lead.