It might be a way to significantly reduce your investment if your only interest is billboards. 

The only option offered was to reduce the sales price, and I want to make sure I get my buyer all that he can on the closing.Thanks again!

And we worked with the living tenant (his spouse), giving her reduced rent for a period of time.

Increase your price, then ask for that price increase back as a seller subsidy can reduce your out of pocket expenses. 

I encourage him to invest in a multi-family home because he can house hack and live for free or reduced rent, and kickstart his investment career.

The risk substantially increased given that we are approaching the end of the US business cycle and most importantly when China began reducing foreign capital outflows of their citizens into assets, especially Real Estate really began to tighten in late 2018.

If it were me, I would ask for a credit at closing, versus reduced purchase price. 

The Renter stated she wanted to move because one of her neighbors was paying $50 less for his rent house and my house was over priced....I did not offer to reduce the price...PLUS I knew I could increase the rent $100 per month if she moved, so I readily accepted the 60-day notice.            

Like tech start-ups (the world I know), anyone can put together a nice presentation, but credibility is the key to reducing risk. 

Every dollar you go over budget, reduces your profit.