Then my current primary home will be rented out to balance the cash flow of this purchase for the next year or so.

With a 10% down payment, you can still leverage your savings effectively while keeping some liquidity for reserves and future investments.FHA Considerations: If you're considering another FHA loan, keep in mind the FHA rules regarding primary residence occupancy requirements.

But what many new investors do in order to buy with low down payment is they buy it as primary so they can acquire with 3-5% down.

I’m especially eager to learn more about house hacking, as my first purchase will be my first primary residence as well as my first rental investment.  

Of course, you won't be able to see if they owned any other property since that would require a search by name option, but at least you will know if the primary residence is a possibility.

The current thought is purchase a 4 unit in the spring as a primary home and live in it for a year while renting out my childhood home and purchasing another duplex in the fall to put me at 10 doors, then move back into my house at the end of the year lease and after a year in the 4 unit, whichever comes last.

Your primary insurance policy with $300,000 in liability coverage should be sufficient in 99.999% of all lawsuits.5.

Currently own a 2 unit as my family primary resident (current not rented, temporarily reverted single family).

It was my father's investment it actually at one point had been our primary residence he was just putting it on the market because he didn't want to deal with the stress of renters or have to worry about carrying costs.

Are these both rentals or is one of these your primary?