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Joseph Eichler’s iconic experimental steel house is back on the market

By Robb Report Singapore 14 October, 2026

Built in 1956 as an experimental prototype, the Eichler X-100 introduced steel framing and advanced ideas about indoor-outdoor living

A modernist masterpiece is once again getting the attention it deserves as it returns to the real estate market. Nestled in San Mateo Highlands in Northern California, this mid-century experimental house was a pioneering project for Joseph Eichler. Known for his wood-framed family homes, he took the opportunity to see if steel could revolutionise residential construction possibilities.

Nestled in San Mateo Highlands in Northern California, this mid-century experimental house was a pioneering project for Joseph Eichler. Photo by Sabrina Huang/Boyenga

Designed in 1956 by A. Quincy Jones and Frederick Emmons, the Eichler X-100 made its debut as a “new living form” that served as a space to test new design concepts, materials and building techniques. It embodied the many modernist principles that captured the imaginations of over 150,000 visitors that visited after its unveiling: expansive glass, exposed steel, skylights and seamless indoor-outdoor living. The three-bedroom home, spanning 214.6 square metres, also offers stunning views of the Santa Cruz Mountains.

Designed in 1956 by A. Quincy Jones and Frederick Emmons, the Eichler X-100 made its debut as a “new living form” that served as a space to test new design concepts. Photo by Sabrina Huang/Boyenga

After selling for US$47,000 in 1957, the house has been through three other owners, with the current owner being Marty Arbunich, the director of the Eichler Network. Faithfully restored to its original condition, it is the only Eichler home listed on the National Register of Historic Places in 2016 and opened to educational tours from time to time.

Interested buyers may contact Boyenga Real Estate for more information

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