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1586 Lexington Avenue

San Mateo, CA 94402
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Bed 3

Bed

Bath 2

Bath

SqFt2,190

Sqft

SqFt8,803

Sqft(Lot)

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. A legacy of visionary design.

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Detail Ic Property Details

Property Type : Residential

Price : $4,498,000

AD Id : 91316256

MLS Id : ML82060534

Beds : 3

Lot Size : 8,803 Sq. Ft

Living Area Size : 2,190 Sq. Ft

Year Built : 1956

County : San Mateo

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Feature Features

  • Bedroom Information

    Total beds: 3

    Bathroom Information

    Total Baths: 2 Full Baths: 2

    Roofing Information

    Foam

    Flooring Information

    Tile
  • Interior Features

    BreakfastBar
    Roof: Foam
    Appliances: DoubleOven, Dishwasher, ElectricOven, Disposal, IceMaker, VentedExhaustFan, Dryer, Washer
    Laundry Features: GasDryerHookup
    Window Features: Skylights
  • Heating & Cooling

    Has Heating: Yes Heating: Radiant Has Cooling: Yes Cooling: None

  • Building Information

    Year Built: 1956
    Construction Materials: Steel
    Pool Features: Fenced, InGround, Association
    Private Pool: No
    View: Hills, Mountains, Neighborhood

  • Lot Information

    Main Square Feet: 8803 Lot Size Acres: 0.2021 Lot Size Source: Assessor Lot Size Square Feet: 8,803

  • Listing Price Information

    Listing Price: $4498000

  • Tax Information

    Parcel Number: 041044030

  • Parking Information

    Parking Total: 2 Carport, Guest, OffStreet

    Homeowners Association Information

    Association Amenities: Clubhouse, FitnessCenter, Barbecue, Other, Playground, Pool, RecreationRoom, TennisCourts

  • School Information

    Elementary School: Other Junior High School: Other Senior High School: Aragon
  • Location Information

    Direction: Bunker Hill to Lexington Ave. Cross Street: Bunker Hill WaterSource: Public
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Nearby Home Value

Address Estimate Bed Bath Sq. Ft Lot Size
118 Rosewood Lane, San Mateo, CA, 94402 $5,695,000 5 6 3,600 9,466 Sq. Ft
58 Bel Aire Lane, San Mateo, CA, 94402 $4,775,000 4 5 3,664 8,115 Sq. Ft
18 Bel Aire Lane, San Mateo, CA, 94402 $5,295,000 5 5 3,977 9,000 Sq. Ft
9 Bel Aire, San Mateo, CA, 94402 $5,595,000 4 5 3,908 9,488 Sq. Ft
1648 Wolfe Drive, San Mateo, CA, 94402 $1,998,800 3 2 1,400 5,250 Sq. Ft
610 S Amphlett Boulevard, San Mateo, CA, 94402 $1,195,000 3 1 1,935 5,987 Sq. Ft
621 E 16th Avenue, San Mateo, CA, 94402 $1,728,000 3 2 1,180 4,500 Sq. Ft
617 Harrow Avenue, San Mateo, CA, 94402 $1,798,000 3 2 1,450 4,500 Sq. Ft
1510 Jasmine Street, San Mateo, CA, 94402 $2,200,000 3 2 1,452 5,000 Sq. Ft
123 Natureza Viva Avenue, San Mateo, CA, 94402 $1,900,000 3 2 3,605 4,965,840 Sq. Ft

The information being provided by Miami Association of REALTORS® is for the consumer's personal, non-commercial use. Any information relating to real estate for sale referenced on this web site comes from the Internet Data Exchange (IDX) program of the Miami Association of REALTORS®. The accuracy of all information is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals. The data contained herein is copyrighted by Miami Association of REALTORS® and is protected by all applicable copyright laws. Any unauthorized dissemination of this information is in violation of copyright laws and is strictly prohibited. Copyright 2026 Miami Association of REALTORS®. All rights reserved.

ByOwner last updated this listing 09/19/2026 @ 04:22

MLS: ML82060534 LISTED BY: Boyenga Team, Compass 408-358-1111 SOURCE: CRMLS

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