Wait.. I am new to all this US legal stuff. So because bank did not response to his letter, sheriff put bank building on sale? or I misunderstood article?
1) He made a "Qualified Written Request" to Wells Fargo (W.F.). I don't know exactly what the request was for though. Presumably an explanation of mysterious charges from W.F.
2) W.F. failed to acknowledge within 20 days and/or act within 60.
3) He filed a suit in small claims court regarding this failure to respond and won by default, since W.F. failed to show up in court.
4) W.F. failed to pay the judgment (?), so he went to the Sheriff to have them place a levy (fine) on Wells Fargo via (presumably) their property.
5) W.F. fails to pay the levy (??), so the property is put up for sale by the Sheriff's department.
(I put question marks in all the areas where the article isn't clear)
Here's the first Google result for Sheriff's sale: http://www.hudclips.org/articles/what-is-a-sheriff-sale-how-...
It's basically a foreclosure, so the headline is only sort-of misleading.