See the following link which explains the 401k loan rules.http://www.irs.gov/Retirement-Plans/Retirement-Pla...Also, here is some more information.The Solo 401k loan term is 5 years for general loans.The Solo 401k loan term can be more than 5 years not to exceed 15 years if used to purchase principal residence for you as trustee/participant of the Solo 401k.Solo 401k loan payments are made either monthly or quarterlyThe interest rate for the solo 401k loan is either: A certificate deposit rate plus 2 percent or theprime rate plus 1 percent. 

If so, this must be signed.4) Receipt of insurance certificate naming the lender as an insured party.5) Purchase of a title insurance policy naming the lender as a co-insured ensuring the title is warranteed if you need to foreclose.

Hummm, I’m thinking they are using a tax certificate or something… Not sure how that works, but, if I understand correctly, they pay the taxes for around 7 years and the deed goes to them?

I am wondering if I should start looking into licenses or certificates...

Pull the death certificate.

It's the information that is going to be useful to you, the degree or certificate won't matter.

WAY less hassle and frankly if you have a crappy tenant 9 out of 10 times the security deposit will end up going to unpaid rent anyway.One thing not mentioned is that you should have the current owner and all the tenants fill out estoppel certificate.  

Although there may be other certificate holders/lien purchasers, sometimes they do not file for the deed/foreclose on the property prior to the statutory period/date, as required. 

But they want me to sign the Certificate of Satisfaction to release the money my mortgage servicer received from the insurance company. 

Get estoppel certificates from every tenant.