Factors for holding vs selling

[Mimi H.]

As someone that's held real estate for some time, and have sold off others, I'd be curious to hear of other BPer's factors for holding vs selling.

As an example, the Bay Area market has appreciated massively in the past few years (even before then but serious hockey stick in the past 3!) so for any investors out there that had bought in at the low, has anyone gotten out while it's still super hot or are rents covering to the point where it's just worthwhile to hold somewhat indefinitely?

I tend to hold on but I'm curious to hear how others structure things, mostly because I'd love to know if I could do things better! (differently?)