© WSJ 2009 

Four years after the collapse of the U.S. housing bubble, flipping homes is back in fashion.Jon Mirmelli, a Phoenix real-estate investor, learned late in the morning of Sept. 28 that a never-occupied custom house on the northern fringes of this Phoenix suburb was going up for auction around noon the same day. The six-bedroom home, built on a three-acre desert plot, has a kitchen with two dishwashers, four ovens, "antibacterial" copper sinks, and a master "spa" bathroom with space for a flat-screen TV visible from the tub. 

The minimum bid, as set by a unit of Citigroup Inc., which had a $1.3 million mortgage on the home, was $379,900. After several minutes of bidding among investors and their representatives, some wearing shorts and flip-flops, Mr. Mirmelli won the home for $486,300. A week later, he agreed to sell it for $690,000 to a woman who moved in this month. Read more.