Envision 10 years  out and your cheap OOS is still performing well meaning it is still producing inflation adjusted cash flow equivalent of a few hundred dollars and has appreciated near the inflation rate (this would be a good performing unit) and compare that to what you would expect a San Diego property to have produced.  

Cash flow makes the journey easier and gives you the returns you are looking for quicker but it will take years for your cash flow to produce enough excess to purchase additional assets.

As mentioned areas like Harlandale and Mission San Jose are relatively safe and will produce good cashflow.I dont really like the Southwest quadrant of the city near Lackland AFB.

.- We've upgraded 75% of the units with fresh flooring, paint, cabinets, countertops, and appliances as needed.When we took over the property the 16 units were producing around $9000/month in gross rent.I just checked our rent roll today, and we just crossed $17,000 in gross income monthly!

The end of last year I agreed to purchase a property out of the area for 30 K.  The folks were about to lose it to a tax sale and so I bought it even though it was not in my geographical area. I got some pictures and ...

when I produced the document with his original signature, the judge immediately ruled in my favor. 

Being single, making $250k, having an ADU that I assume produces income...

We mass analyze the entire market here simultaneously and there are dozens of properties that would produce that type of income for less than $700K. 

If we can "normalize" those hormon as our body can't produce it anymore, by means of injection from external medication, when our hormone is high-normal like 25 years old, then we become 25 years old again inside physically.Actually many folks think I'm still 32-34 haha LOL LOL, the recipe is just all above comments + HRT that really works well for me.

I recommend you never sell a property unless you have a firm plan to invest the money in something that produces a better return or moves you closer to your goals.