Anything from REIT mutual funds to direct ownership (which depending on your definition is "passive" to many, including the IRS), to direct asset syndications and funds.  

It just depends on which strategy makes better sense to you (similar to buy/sell vs.  

depends on property but most of the time yes

It depends on what you are looking for from the investment and what your expectations are which I didn't see above.

•My California LLC serves as a holding company for my out-of-state LLCs that own the individual properties.This structure keeps things organized while ensuring compliance with both states’ regulations.As for your bonus question, it depends on how the property was purchased.

@Adriana V Alvarado a "good deal" in the BA really depends more on your timeline and long term strategy.

He wanted to make renovations, depending on the extent, was told he might lose the grandfathering.

It depends on what type of experience you want to have.

Instead of depending on buyer agents to drive prospects from house to house, prospects would tour houses themselves, and unlicensed “door-openers” would admit them.

In my opinion the way they sell these I should have had tenants by December basically so I'm going on about 6 months depending on how you start with no tenants in either side.