The figures were reported Wednesday by the Commerce Department. Earlier, the median economist estimate was for only a 0.5 percent gain with only one prediction of an increase above 1 percent, Bloomberg reported.
Seasonally adjusted spending reached an annual rate of $816.4 billion, the highest amount in nearly two years. That gain was led by a jump of 3.3 percent in nonresidential construction. Residential construction, mostly single-family homes, rose 0.8 percent. Government spending rose 0.5 percent.
While spending on construction has rebounded since the collapse of the housing bubble in 2007, homebuilders remain skittish about placing more properties on the market, given the glut in existing home inventories. Building of new homes has been depressed by the wide difference between the prices being asked for new homes and those fetched by existing properties. In December, that gap exceeded 38 percent.
The better-than-expected data, along with an earlier report that showed U.S. employers had added 170,000 jobs in January, and another showing an increase in manufacturing, coincided with a small rally in U.S. equity markets Thursday.
The benchmark S&P 500 Index was at 1,327, up 1.1 percent from Tuesday's close, in mid-morning trading. Shares of D.R. Horton, the largest U.S. homebuilder, advanced nearly 2 percent, to $14.19.



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