Exhibit A is Stonebrook Court, a grand 30,000-square-foot Tudor on 7.5 majestic acres that dwarfs its neighbors in the bucolic enclave of Los Altos Hills.
William Randolph Hearst, spending tens of millions of dollars on a dot-com-boom-financed face-lift.
But Stonebrook has become an inadvertent monument to a residential downturn that has spread to the highest-end homes and touched buyers and sellers of considerable wealth.
Porter, divorced and ready to move on, put the home on the market in January 2008 for $45 million.
With no takers, he lowered the price in July to $38 million -- an amount that matches the most expensive California sale logged in public records that year: a six-bedroom Bel-Air mansion that sold in October. (This year, the record is $31.5 million for a Beverly Hills mansion that sold this week.)
Silicon Valley, like the rest of the state, has seen home values plunge. In March, the median price in Santa Clara County (home to most Silicon Valley communities) declined 37.1% from a year earlier -- compared with a 31.8% drop in Los Angeles County, according to real estate tracker MDA DataQuick.
Los Gatos-based real estate agent Larry Miller says high-end homes in Silicon Valley -- ones going for $5 million or more -- are selling for about 15% less than their asking price, about twice the discount seen in 2007.
"Things are staying on the market a little longer," Miller said.
The discount might be even greater, except that wealthy owners can afford to bide their time, he and other agents say.
Cherie Colon, who sells homes in the Los Gatos and Saratoga areas, said rich owners figure it this way: "If I can get my price, fine; otherwise, I'll wait it out."
Patience has long been a requirement for selling trophy homes. Entrepreneur and Oracle Corp. co-founder Larry Ellison's Japanese-inspired 8,000-square-foot residence in Atherton went on the market at $25 million in March 2005 and sold in June 2007 for $14 million.
In Southern California, the 56,500-square-foot Candy Spelling mansion, which came on the market in March, defines the upper limit of the housing market at $150 million.
Because the pool of potential buyers for these properties is so small, there's no telling how long it will take to sell, said Jeffrey Hyland, one of three listing agents for the Spelling compound.
"As brokers it's always one of the questions that we are asked," he said. "And that's the only question you really can't answer."
With Stonebrook Court, Porter recognizes that it could be years before he receives a suitable offer. And he is in no hurry.
"Buying this house is akin to buying one of the great masters," Porter said.
But, his listing agent said, Porter may be more flexible now than he was last summer.
"He's not lowering the price, but will consider less," said Olivia H. Decker of Decker Bullock Sotheby's International Realty. "He will also consider trading for income properties."