@Basilio AlcantaraWhat you are referring to is called "60-day rollover" (or indirect rollover).

Many leases automatically "roll" over to tenancies at will (month to month leases) after the first year concludes. 

My father passed away recently and left a pre-tax death benefit that allows me to either take a lump sum of cash which I would use towards real estate or I can do a direct rollover into my Roth.

In addition you can rollover existing IRAs into a Solo401k.

I haven't done a refi in a while, but I thought the prepay/escrows will roll over. 

In my specfic case, I'm looking to roll over 401k from previous employer into self directed/solo 401k to allow for more REI options. 

@Jonathan Choyce The IRS has published a rollover chart that consists of a matrix that allows you to see if the account type you want to move from is eligible for the account type you want to move to. 

I have $15K in old 401Ks that I could rollover into a SDIRA and I have $15K in cash saved up.

I also read that I could rollover to an IRA and withdrawal without penalty but not sure how long the process would take. 

I would like to have that in my back pocket in case I run into any issues when it comes time to roll over to a mortgage.