100 Most Expensive Homes in Dallas

Previous Next Return to full listings

#53 Audrey and Erich Spangenberg

$9,516,620


  • Living Area: 14,139 sq ft
  • Year Built: 1996
  • Land Value: $5,529,680
  • Noteworthy: 7 fireplaces

In the business, they are called “patent trolls.” The couple buys patent rights but don’t actually use the technology—they just sue others who do. He recently joined forces with Priceline founder Jay Walker, who is suing more than 100 different companies for violating various patents he holds.