The foundation was also heavy (full basement open to the back).Because of the boulders and the construction of the house we sustained pretty minor damage overall.

I’ve lived on my current budget for several years (essentially living like a grad student) and know my living situation is comfortable enough and paying this amount is sustainable for me. 

With this strategy we believe we can sustain ourselves through real estate down cycles.2.

Once I got to about 10+ units it started to be more self-sustaining.

Have you considered the possibility of the str market slowing, and if the property would be sustainable as a ltr?   

So, we have the first location selection metric:Significant and sustained population growth, WikipediaRents Persist Throughout Your LifetimeYour rental income will only continue throughout your life if your tenants maintain similar employment as long as you live.

Of course word of mouth and networking are crucial and have always been a major driver of growth (and sustainment!).

They want a sustainable lifestyle that includes using fewer resources, in a home made of natural materials, often off-the-grid.

@Jay Hinrichs my investment philosophy simply doesn't align with what I'm seeing for the long term viability of FS being a sustainable neighborhood to invest in Indy.

"Notes" are promissory notes aka "mortgage note" on a home, and there is a side of real estate investing that buy and sell mortgage notes for good sustainable passive income as well as lump some cash.