If you think of an old school investment club where members get together every month to discuss and vet stock investments and then invest together, it's like that, but instead of stocks we focus on passive real estate investments. 

One way to look at that is that the stock market (long term) averages a 7% return.  

I know this probably makes this more difficult in ways, but could it not provide more housing stock in Los Angeles?

But it still beats the stock market in my opinion.

Somebody could invest $100 into the stock market today, get lucky and gain 30% in one day. 

I am considering selling ~$300k in stock that I've accumulated over the past 10 years.

Countertops: If you are not replacing cabinets and you do not need any special size go with a stock laminate for now. 

Stocks suck!

Put it into stock investments, and know that you are on track to be a millionaire several times over if you can sustain this kind of accumulation. 2) Serial house-hack.

I was going to go with "High net worth individuals (HNWIs) are those who have at least $1 million in easily convertible assets like cash, stocks, and bonds."