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About the Listing ML5009477 - ML5073495
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.
Listing Highlights
Status
Active
Days on Site
21
Property Type
Residential
MLS ®
ML82039557
Year Built
1956
Total Square Footage
2,190
Lot/Acreage
0.2
County
San Mateo
Building Name
The Highlands
Area
699 - Not Defined
School District
Other
High School
Aragon
Interior Details
- Bedrooms: 3
- Bathrooms: 2 Full
- Appliances: Double Oven, Dishwasher, Electric Oven, Disposal, Ice Maker, Vented Exhaust Fan, Dryer, Washer
- Air Cond:
- Heating: Radiant
- Fireplaces: Free Standing,Living Room,Wood Burning
- Floor: Tile
- Above Ground Sq Ft:
- Below Ground Sq Ft: n/a
- Basement:
- Other: Breakfast Bar
- Water: Public
Exterior Details
- Lot Description: No Land Lease
- Garage Capacity: N/A
- Parking Spaces: 2
- Zoning: R10008
- Roof: Foam
- Others: Steel
- Sewer: Public Sewer
- Parking Features: Carport,Guest,Off Street
Financial Details
- Tax Amount: N/A
- Taxes w/Assessments: N/A
- Tax/Property ID: 041044030
- Tax Year: N/A
Payment Calculator
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1586 Lexington Ave San Mateo, CA 94402
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