Thanks for your continued helpful responses.  

There is not a separate entrance to the basement, but the stairs to the basement are in a laundry room in the back part of the house.

Trying to house hack in Los Angeles which is obviously really difficult.

My duplex had an additional unit built in the basement and discovered by city inspectors when a neighboring squabble caused buildings department to check houses on the block and my house had 3 mailboxes out front.

I see a problem with a lot of saturation in that area, and I can imagine that it is very difficult to stand out, and anyone that does operate one of those condos, would you do it again, or would you try to get a house next time? 

I *think* I'd like to set up an LLC to house the STRs, but I'm struggling on the implications of single-member vs multi-member.

The second phase will introduce modest restrictions, with continued data analysis to inform further regulatory measures.

House hacking a 4 plex is a great way to get started.

Naturally we push the limit to the point that the Housing Specialist might request a small adjustment to meet the calculations. 

I've seen new houses built in 7 days from the day the foundation was cured but there was tons of planning which isn't counted.