Even though I say this about people, I'm one of them too, but it's by choice with me, because I need benefits for me and my son.

Currently, I have properties in both Memphis and Kansas City, MO and I'm mainly looking to grow in KC.

Our main goal is to invest in single and multi-family properties here in CA and in AZ. 

why would you buy a rental in a SIDRA  you lose the depreciation benefits.. which is one main reason to buy a rental in the first place.. notes are the best vehicle for retirement accounts. 

Try 123A Main St., 123B Main Street, 123C Main St etc. 

It needs a full interior wall repaint on the main floor and upstairs bedroom (bungalow) to clean things up.

I'm mainly into short term rentals, but recently began broadening my REI exposure to learning about SF/multi-family properties. 

If it requires a 15% down payment, then that wold explain why I hardly see this talked about here, and would make the FHA 203(k) the obvious choice for me (starting on a limited budget)

woody - 1st option  would be to  try to get a " cash out " refinance on the Seattle  rental  property ….2nd  choice  would be an  owner occupied  purchase loan for the CA  possible  property   ( get pre approved for this idea )  if you are unable to do these options because of  whatever the reason ….I am not certain about the " collateral loan "  idea / question

You have 3 main options assuming you want to keep growing.1.