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$4,498,000
New Listing

1586 Lexington Avenue
SAN MATEO, CA 94402

For Sale|Single Family Residence|Active
3
Beds
2
Total Baths
2
Full Baths
2,190
SqFt
$2,054
/SqFt
1956
Built
Subdivision:
The Highlands
County:
San Mateo
Listed by of Boyenga Team of Compass (408) 373-1660
1586 Lexington Avenue1586 Lexington Avenue1586 Lexington Avenue1586 Lexington Avenue
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Monthly Payment (Est.)

$20,522
Calculator powered by Showcase IDX, a Constellation1 Company. Copyright ©2026 Information is deemed reliable but not guaranteed.

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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Listing Snapshot
Price 
$4,498,000
Days On Site 
0 Days
Bedrooms 
3
Inside Area (SqFt) 
2,190 sqft
Total Baths 
2
Full Baths 
2
Partial Baths 
N/A
Lot Size 
0.2021 Acres
Year Built 
1956
MLS® Number 
ML82060534
Status 
Active
Property Tax 
N/A
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
19 hours agoListing updated with changes from the MLS®
19 hours agoListing first seen on site
General Features
Acres 
0.2021
Cross Street 
Bunker Hill
Disclosures 
https://app.disclosures.io/link/1586-Lexington-Avenue-yospby0z
Number Of Stories 
1
Parking 
Off StreetCarportNo GarageOn StreetGuestLighted
Parking Spaces 
2
Property Sub Type 
Single Family Residence
Security 
Security GateSecurity Fence
Sewer 
Public Sewer
SqFt Total 
2190
Style 
ContemporaryEichlerFlatModern / High Tech
Utilities 
Cable Available
Water Source 
Public
Zoning 
R10008
Interior Features
Appliances 
DryerDisposalDishwasherExhaust FanIce MakerPlumbed For Ice MakerDouble OvenElectric OvenWasher/DryerWasher
Electric 
220 Volts in Kitchen220 Volts in Laundry
Fireplace 
Yes
Fireplace Features 
Free StandingLiving RoomWood Burning
Fireplaces 
1
Flooring 
VinylTile
Heating 
Natural GasRadiant
Interior 
Breakfast BarEat-in KitchenHigh CeilingsBeamed CeilingsDouble VanityKitchen Island
Laundry Features 
Laundry RoomInsideGas Dryer HookupSink
Window Features 
Skylight(s)
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Exterior Features
Construction Details 
Metal SidingFrame
Exterior 
CourtyardBalconyStorage
Fencing 
FencedBack YardGateWoodOther
Lot Features 
Back Yard
Other Structures 
Storage
Patio And Porch 
Patio
Pool Features 
Pool SweepFencedIn Ground
Roof 
Foam
View 
HillsMountain(s)Neighborhood
Waterview 
HillsMountain(s)Neighborhood
Windows/Doors 
Skylight(s)
Community Features
Accessibility Features 
Accessible Hallway(s)
Association Amenities 
ClubhousePoolTennis Court(s)
School District 
San Mateo Union High
Schools
School District
San Mateo Union High
Elementary School
Highlands Elementary
Middle School
Borel Middle
High School
Aragon High
Listed by of Boyenga Team of Compass (408) 373-1660



The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListings™ MLS system. Real estate listings held by brokerage firms other than eXp Realty are marked with the Internet Data Exchange icon and detailed information about them includes the names of the listing brokers and listing agents. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright 2026, MLS Listings, Inc..
Last checked: 2026-09-18 11:54 AM UTC

Neighborhood & Commute
Source: Walkscore
Disclosure: Community information and market data powered by Constellation Data Labs. Information is deemed reliable but not guaranteed.
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