Wells Fargo & Co., for example, said 2.3% of its commercial real estate mortgages were considered nonperforming as of the second quarter, up nearly three-fold from 0.8% a year ago.
The San Francisco bank purchased its large teetering rival Wachovia Corp. at the end of last year, and Wells Fargo now holds $138 billion in commercial real estate loans, more than any other lender. Wachovia expanded aggressively into commercial real estate before falling victim to rising losses from consumer loans.
Nearly a third of Wells Fargo's total commercial real estate loans are tied to properties in California or Florida -- two regions among the hardest hit by the real estate depression.
Wells Fargo did not immediately respond to a request for comment.