DEAN KOONTZ — $145 MILLION
Author Dean Koontz is best known for his suspense thrillers. However, elements of science fiction, fantasy, and horror frequently made their way in his stories. About 14 of his novels have reached the New York Times Bestseller list. Before he even became a noted writer, he had started his career as an English teacher, and he only wrote during his free time. His huge earnings over the years has helped him buy this mansion-like home in California that is close to 24000 square feet in size.