Property Details
Upcoming Open Houses
About this Property
First time on the market in more than 50 years. An exceptional land-value opportunity in one of Los Altos most coveted neighborhoods. Set on an impressive 19,900 (appr.) SF parcel, this tranquil property offers a rare canvas for builders, investors, or visionary buyers seeking to create a custom estate in a truly special location. The existing residence consists of a 3-bedroom, 1.5-bath main home, complemented by an independent in-law unit with 2 bedrooms, a full bath, a generous living area, and a kitchenette - for a total of 5 bedrooms, 2 full and 1 half baths. While the structures are ready for transformation, the true value lies in the expansive lot, tranquil setting, and exceptional location. The oversized grounds present abundant possibilities for new construction, thoughtful expansion, or a complete reimagining of the property, subject to buyer verification. Mature surroundings and a spacious footprint provide the ideal foundation for a future luxury residence with ample outdoor living. Just minutes from top-rated Los Altos schools (Almond Elementary, Egan Middle, and Los Altos High), downtown shops and dining, parks, and major Silicon Valley commute routes, this is a rare opportunity to secure a large parcel in a premier location and bring a bold vision to life.
MLS Listing Information
MLS #
ML82031048
MLS Source
MLSListings, Inc.
Days on Site
6
Interior Features
Dining Room
Dining Area
Family Room
Separate Family Room
Fireplace
Living Room, Other, Wood Burning
Flooring
Carpet, Other
Cooling
None
Heating
Central Forced Air
Exterior Features
Roof
Wood
Foundation
Concrete Perimeter, Slab
Style
Ranch
Parking, School, and Other Information
Garage/Parking
Attached Garage, Gate/Door Opener, Garage: 2 Car(s)
Elementary District
Los Altos Elementary
High School District
Mountain View-Los Altos Union High
Sewer
Public Sewer
Water
Public
Zoning
R1
Neighborhood: Around This Home
Neighborhood: Local Demographics
Market Trends Charts
Nearby Homes for Sale
643 Jay St is a Single Family Residence in Los Altos, CA 94022. This 1,408 square foot property sits on a 19,900 Sq Ft Lot and features 5 bedrooms & 2 full and 1 partial bathrooms. It is currently priced at $4,995,000 and was built in 1950. This address can also be written as 643 Jay St, Los Altos, CA 94022.
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This listing information is up-to-date as of January 18, 2026. For the most current information, please contact Owen Halliday, (650) 492-0062
