Consumer confidence fell in August by the largest one-month decline since the aftermath of Hurricane Katrina in 2005, as stock prices and home values fell, Bloomberg News reported. The Conference Board’s index of confidence declined to 105 from 111.9 in July. Economists had predicted a 104 reading.

A separate report by S&P/Case-Shiller today showed that home values dropped by a record 3.2 percent in the second quarter from their year-ago levels, and prices in 20 U.S. metropolitan areas fell 3.5 percent.

Though the labor market has remained resilient, it has begun to show signs of weakening. The share of consumers who said jobs are plentiful declined to 27.5 percent from 30 percent in July and the portion of those who believe jobs are hard to get rose to 19.7 percent from 18.7 percent. The portion of people who expect their incomes to rise in the next six months was 19.1 percent, down slightly from 19.2 percent, and those expecting more jobs fell to 13 percent from 13.8 percent.

Other indexes had similar drops. The ABC/Washington Post consumer confidence index dropped to minus 20 in the week ended Aug. 19, the lowest level since October 2005. Reuters/University of Michigan’s preliminary index of consumer sentiment fell to the lowest level in a year, which it reported on Aug. 17.