Construction spending fell in September as home building declined for a sixth consecutive month, the longest stretch of weakness in residential construction in more than a decade.

The Commerce Department said that spending on construction projects dropped by 0.3 percent to a seasonally adjusted annual rate of $1.196 trillion in September. It was the biggest decline since a 0.7 percent fall in July and the fifth month in which overall construction activity has either declined or been flat.

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Housing was down 1.1 percent in September, reflecting the steep slump in this once booming sector as builders have slashed construction plans in the face of slumping sales demand.

In a second report, the Institute of Supply Management said its closely watched gauge of manufacturing activity edged down to 51.2 in October, compared to a September reading of 52.9. The October performance was below the 53.0 that analysts had been expecting.

The government reported last week that the overall economy slowed to a lackluster growth rate of just 1.6 percent in July-September quarter, the slowest pace in more than three years, as housing construction plunged at a rate of 17.4 percent, the steepest drop in four quarters of declines.

Some economists have worried that the sharp drop in housing could rattle consumer confidence and push the country into a recession. However, those fears have lessened somewhat in recent weeks as gasoline prices, which had surged above $3 per gallon, have retreated, leaving consumers with more money to spend on other items.

For September, the 1.1 percent drop in private residential construction was the sixth consecutive decline of 1 percent or more. It pushed total spending in this area down to $312.7 billion at a seasonally adjusted annual rate.

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