All major segments of construction spending increased in October, bringing total spending to a 37-month high at an annualized rate of $872 billion, according to an analysis of new federal data recently released by the Associated General Contractors of America.

Association officials warned, however, that the “fiscal cliff” imperils future improvement in both public and private spending.
“Widespread gains in spending in October, along with hefty upward revisions to estimates for the previous two months, show that construction has finally come out of its long slump,” said Ken Simonson, the association’s chief economist. “Although all major spending categories are far below pre-recession highs, they are well above their recent low points.”

Simonson noted that total construction spending rose for the seventh consecutive month in October, up 1.4% from September’s upwardly revised total and 9.6% from the October 2011 mark, bringing the total to the highest level since September 2009.  Private residential spending reached the highest level since November 2008, increasing by 3.0% compared with September and 21% during the past 12 months. Private nonresidential construction edged up 0.3% for the month and 11% compared with October 2011. Public construction rose 0.8% in October but slipped 1.0% year-over-year.

Within the private sector, all three residential categories set multi-year peaks. New single-family construction rose to the highest mark since November 2008, climbing 3.6% for the month and 29% over 12 months. New multifamily construction hit a three-year high, soaring 6.2% for the month and 53% since October 2011. Improvements to existing residential structures—a category likely to grow further once reconstruction from Hurricane Sandy is included—climbed 1.8% in October and 8.9% over the year to a five-year high.

Among private nonresidential categories, the largest—power construction, which includes oil, gas and other energy projects—rose 1.6% for the month and 19% over 12 months. Manufacturing construction decreased 2.5% in October, but was up by 3.6% year-over-year. Commercial construction, comprising retail, warehouse and farm structures, rose 1.2% in October and 9.5% over 12 months.

Public construction achieved the highest spending level of the year. Highway and street construction spending, the largest public segment, dropped 2.4% in October and 5.0% year-over-year, while educational construction spending gained 0.9% for the month but fell 2.8% from year-ago levels.