這個是美國房地產行業的一個重要的前瞻性指標。房地產行業無論在哪一個國家都顯得舉足輕重，房地產的繁榮也代表經濟的繁榮相信很少人會反對。房地產業也是經濟週期轉捩點的重要指標之一，往往是最早做出下跌和回升的反應。房地產的繁榮會產生"乘數效應"，對其他行業將產生強而有力的拉動效應，對就業和消費將產生直接的影響，反之亦然。
統計機構向全美19000個地區的建築商進行調查，向他們詢問當地的新開發住宅和登記在案的許可證專案。
新動工住宅是完全意義的新住宅，加建、改建和重建都不計算在內。同時，新動工住宅麼進行季節性調整，我們更應該注意的是3－4個月的平均數多於個別月份的資料。
NEW RESIDENTIAL CONSTRUCTION IN DECEMBER 2007
The U.S. Census Bureau and the Department of Housing and Urban Development jointly announced the following new residential construction statistics for December 2007:
BUILDING PERMITS
Privately-owned housing units authorized by building permits in December were at a seasonally adjusted annual rate of 1,068,000. This is 8.1 percent (±1.7%) below the revised November rate of 1,162,000 and is 34.4 percent (±2.2%) below the revised December 2006 estimate of 1,628,000.
Single-family authorizations in December were at a rate of 692,000; this is 10.1 percent (±1.6%) below the November figure of
770,000. Authorizations of units in buildings with five units or more were at a rate of 322,000 in December.
An estimated 1,376,100 housing units were authorized by building permits in 2007. This is 25.3 percent (±0.8%) below the 2006 figure of 1,838,900.
HOUSING STARTS
Privately-owned housing starts in December were at a seasonally adjusted annual rate of 1,006,000. This is 14.2 percent (±8.3%) below
the revised November estimate of 1,173,000 and is 38.2 percent (±4.9%) below the revised December 2006 rate of 1,629,000.
Single-family housing starts in December were at a rate of 794,000; this is 2.9 percent (±8.7)* below the November figure of 818,000. The December rate for units in buildings with five units or more was 196,000. An estimated 1,353,700 housing units were started in 2007. This is 24.8 percent (±1.3%) below the 2006 figure of 1,800,900.
HOUSING COMPLETIONS
Privately-owned housing completions in December were at a seasonally adjusted annual rate of 1,302,000. This is 7.7 percent (±10.3%)* below the revised November estimate of 1,411,000 and is 31.0 percent (±5.8%) below the revised December 2006 rate of 1,887,000.
Single-family housing completions in December were at a rate of 1,009,000; this is 12.0 percent (±10.5%) below the November figure of 1,146,000. The December rate for units in buildings with five units or more was 278,000.
An estimated 1,500,200 housing units were completed in 2007. This is 24.2 percent (±1.7%) below the 2006 figure of 1,979,400.
美國次按風暴對建築行業的影響觸目驚心，十二月的新屋建造許可證數字和上月相比下降8.1%，但和去年同期相比下降了34.4%。數字之差，可以為經濟的不振埋下伏筆。而新屋動工數字和上月上月相比下降14.2%，但和去年同期相比下降了38.2%。十二月的新屋完工數字和上月相比下降7.7%，但和去年同期相比下降了31%。可以確見美國樓市步入嚴冬，次按風暴越演越烈。這對環球金融市場的衝擊十分巨大，港股較大的調整在所難免。
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