Something like: Tenant will maintain interior temperature of unit at a minimum of 50 degrees.

To me, if you aren't at least maintaining 0 cash flow, you're betting too much on appreciation to the investment work. 

Banks, particularly smaller banks who provide real estate loans are increasingly focused on their borrowers maintaining depository relationships.

Since your properties have significant equity and low interest rates, you could consider refinancing just enough to maintain strong cash flow.House Hacking:Consider purchasing a duplex, triplex, or fourplex in San Diego.

Indeed, you can get higher returns than that in the stock market at the click of a mouse and, when investing internationally, you'd typically want a higher return than you can get domestically or in the stock market, unless you're mainly looking for diversification or parking your money.On another unrelated note, I love your latest podcast episode.

This concerns me about the potential to maintain a solid tenant base and would likely cause a higher vacancy factor.

These kinds of foundations need to be maintained over the years.

Those are repairs that we had to pay for, however, and that can cut into your cash flow if these problems occur often.Well maintained equipment is also key.

Successful individuals must learn to accept uncertainty, maintain a flexible mindset, and continue to invest.

No you won't benefit from the tenant paying down your mortgage or the house appreciating, but you also won't have to deal with tenants, maintaining the home, etc.