Days on market are around 75 days on average, depending on the area.

It depends on a lot of things, including how cheaply you *would* live without house hacking.

Their lender even noted how this switch opened doors for them to secure a third property within two years.From what I’ve seen in Forbes, this decision often depends on the investor’s timeine.

However, it all is market-dependent.

It depends on the LTV, type of loan, whether it is rate and term or cash out refi, and some other details, but that's not crazy.

I don't work on houses, but I have to use B and A-basis values for material strength which in effect means the real material will end up being 20%+ stronger (depend on the material).  

The answer is it depends - if there is no more settlement then they are correct you probably do not need piers at this time, if it continues to move then you need to do something.

One can be close to a hands off, passive investment depending on a few things.

Some Bay Area investors I know are: house hacking, rent by the room, mid-term rentals, STR (depending on your location AirBnbs may not work).

Depending on the opportunity type and the licenses you have, that will either be pretty hard or really hard.