What are some companies still insuring rental properties in Orange County California?

Fruit-cake maybe, wack-job sure, but the psyco is a smart psyco. 

In these "quantity" areas, you'll have a very hard time finding a buyer who has a down payment and can qualify for a loan .This is an article Jack Miller wrote about the topic.Making money from the earnings of poor people is like getting orange juice from an orange tree without any oranges on it.

So, I think it definately takes more savvy these days, but there is still low hanging fruit in the Carolinas, Georgia and Florida everywhere I look. 

I am searching in San Diego and Orange County areas.

@Petronella Kerssens I agree with all things stated above, although Orlando is tighter on short term rentals (Orange County specifically). 

My apples are oranges.

I'm finding some great sellers in Orange County who like that option to help with their capital gains liability...you just need an agent who knows how to present that type of offer.  

Now if you don't like long-term data, let's use last 20 yrs only, from JPMorgan Wealth Management Teams in house data, which covers a boom a bust and a boom and a pan-demic, typical for a US 20yr span. which gives us 9.5% nominal (REITS beat SP500 by the way), but the key number is the orange bar, 3.6%, That is what the average wealthy college educated client of theirs dose, hundreds of thousands of clients.

As I'm sure you already know, speaking with an attorney who specializes in such ventures is a must to keep you out of an orange jumpsuit!