Do the parents have preferences as to payment of capital gains if you were to do a sale (sounds like most or all could be shielded)? 

Many times there is very little cavity in the wall as they are just furred out and the ledger boards at the top of each wall are solid for maybe 12" requiring a big hassle to cut to get wires between floors.

** What Team Members are most essential for each (or all) of the following Creative Finance Strategies?

If I gave some or all of my house to my son before Prop 19 became effective he might dodge the property tax increase upon my death BUT he would inherit my tax basis for capital gains taxes when he sells after or before my death.  

Of course, I know that only the 1% that are effective and successful and ethical post in these forums or all social media.

Are you looking to have each property on separate notes or all under one blanket loan?

@Amer Swid The whole point of a house hack is to cover some or all of your living expenses.

Payments that you make normally fall into one of 3 buckets100% of the payment can be factored in somewhere on the returnPartial payment can be factored somewhere on the return0% of the payment can be factored in somewhere on the returnHouse-hacking also has considerable tax implications in the event that you want to sell this property.You can potentially defer a portion or all of the gain on the investment property with 1031 exclusion.You can potentially exclude a portion or all of the gain on the personal residence with section 121 exclusion

There is a 9 unit property on the market that we could acquire if we sold half or all of the current portfolio.

Section 8 is a program for low income tenants to get government subsidy of some or all of their rent (at market rates).