1586 Lexington AVE San Mateo, CA 94402 Open Sun 1:30PM-4:30PM
UPDATED: 05/25/2026 06:30 PM ON SITE: 27 days on site
$4,498,000
3 Beds2 Baths2,190 SqFt
Key Details
Property Type Single Family Home
Sub Type Single Family Home
Listing Status Active
Purchase Type For Sale
Square Footage 2,190 sqft
Price per Sqft $2,053
MLS Listing ID ML82039557
Style Contemporary,Eichler,Flat,Modern / High Tech
Bedrooms 3
Full Baths 2
Year Built 1956
Lot Size 8,803 Sqft
Property Sub-Type Single Family Home
Property Description
A rare architectural offering, this one-of-a-kind 1956 Mid-Century Modern X-100 prototype, designed by an acclaimed team of architects, represents a pivotal moment in mid-century modern design. The home showcases six exposed steel I-beams, eliminating interior load-bearing walls and creating a dramatic open, light-filled environment with seamless indoor-outdoor flow. Thoughtfully restored while honoring its original vision, recent updates include fresh interior/exterior paint, recoated foam roof, refinished vinyl and concrete floors, updated radiant heating, curated furnishings, and refreshed landscaping. The home is organized around two private garden atriums with in-ground planting beds, while 32 feet of skylights flood the interiors with natural light. Signature materials, steel, glass, and Formica, highlight the home's authentic modernist character. Built-ins and kitchen elements are fully integrated into the architecture. Debuted in 1956, the X-100 gained national attention and influenced generations of modern residential design, set against the backdrop of Crystal Springs Reservoir. Listed on the National Register, this is a true collector-grade property ideal for design enthusiasts, historians, and those seeking a singular living experience.
Based on information from the MLSListings MLS as of 05/26/2026 18:32
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The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListingsTM MLS system. Real estate listings held by brokerage firms other than Blok are marked with the Internet Data Exchange and detailed information about them includes the names of the listing brokers and listing agents.
The broker providing this data believes the data to be correct, but advises interested parties to confirm all information before relying on it for a purchase decision. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated at 05/26/2026 18:32
The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListingsTM MLS system. Real estate listings held by brokerage firms other than Blok are marked with the Internet Data Exchange and detailed information about them includes the names of the listing brokers and listing agents.
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