@Jeremi Ramos do an addendum to your PMA that has all the Portfolios and Buildings on it.Be sure to include language though, that allows you to auto-transfer funds between the Portfolios/LLCs to cover your management expenses.Otherwise an owner could screw you on fees by letting portfolios go negative on their balances.

Is this as simple as going to to county recorder and transferring it into my name?

Most attorneys in California advise against them as they cost about $800/year, and you also have to transfer a property into your personal name before a sale, so they do not help with anonymity. 

Even though the property is under your Nevada LLC and you're the managing member, the lender will still need to be involved to ensure everything is cleared.Make sure the title transfer was properly recorded after your ex-spouse's passing, and work with your escrow officer to handle the mortgage at closing.

Deed is transferred to the buyer's name. 

How difficult is it to transfer properties under my name to an LLC at a future date?

I need to transfer a property from my sister to my LLC.

I have loans on two of the properties and am concerned that if I transfer the properties into an LLC that the loans would be called . 

And in the case of Massachusetts, the value of the inspection machine is added to all that.Expect (and contract for) inventory to be transferred at actual cost, supported by invoices.I hope that helps!

Same reason you have someone handle the mortgage, title transfer, inspection, etc.