"Why is the X-100 the #1 greatest Eichler home of them all?"

The Eichler X-100 stands as builder Joe Eichler’s most ambitious and innovative creation—a one-of-a-kind, steel-framed prototype that redefined what modern American housing could be. Designed to merge mid-century modern aesthetics, emerging technologies, and functional family living, the X-100 represents the boldest vision ever produced by Eichler Homes. No other Eichler residence matches its experimental design or architectural significance.

When the X-100 debuted in 1956 as a model home in the San Mateo Highlands Eichler community, it became an immediate statewide sensation. More than 150,000 visitors toured the home within weeks, and it was featured widely across newspapers, magazines, television programs, and even a theater newsreel as a showcase of the celebrated “California Modern” lifestyle. Unlike typical Eichler homes with shared floor plans, the X-100 is truly one-of-a-kind—the only home of its design ever constructed.

Today, the X-100 is preserved as both a private residence and an architectural landmark listed on the National Register of Historic Places. Considered the “pinnacle” of Eichler’s vision, the X-100 continues to capture the imagination of Eichler enthusiasts, historians, and mid-century modern homebuyers. Its rarity, innovation, and iconic status firmly establish it as the #1 most significant Eichler home ever built.