Owner willing to finance 20% down?

[Jeff W.]

I have found a commercial property where the owner is willing to finance 20%. My question, as I am unfamiliar with commercial properties, is whether a bank will accept this, or will they require the money down to be directly from me?

Just to be clear, I'm trying to get the bank to finance 80% and the owner the other 20% (or 75% and 25%).