Unusual Bird: White Finch

I first saw this finch on March 31, 2017. He was out on my feeders, but it was late and pouring rain, so I was not able to get decent photos. I saw him again on April 7th. I just saw him again this evening, right outside my kitchen window on the feeders.
I’m assuming that he is molting? But the beak is white as well. I can’t tell if he is a House Finch or a Gold Finch. I have plenty of both.