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 . 

I would ensure utilities are transferred out of your name also.

They may "forget" to tell you that the tenant paid a double deposit, and then not transfer that deposit to you at closing.Your offer to purchase should include a requirement that the Seller provide all documentation and agree to sign an estoppel certificate (also called an estoppel form or agreement).

@Diana JingIf your IRA and 401k are not of the "self-directed" variety allowing for investment into real estate, you'll need to transfer those assets to an account that is, namely a self-directed Solo 401k or self-directed IRA.

Or, you or the insurer could have the lien transferred to a bond removing it from the property. 

There are always parents of students who have failed out, transferred or chosen to study abroad offering discounted subleases every semester.

First, they fund you under their credit which they transfer in your name to buy property, so providing money is what they do.  

You are transferring various liabilities, namely maintenance and operations aspects from you too a buyer. gaining some liquid capital (down payments), while retaining control of assets. 

@James FloydYou can also setup an IRA LLC for the Roth IRA since it cannot be transferred to a solo 401k.

@Jackson Grantham Investors with partners often transfer the property title to the LLC after securing financing in their personal names, though they should check for a "due-on-sale" clause.