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643 Jay Street, Los Altos, CA 94022

Los Altos
Local realty services provided by:CENTURY 21 Valley Properties
643 Jay Street,Los Altos, CA 94022
$5,900,000
  • 5 Beds
  • 3 Baths
  • - sq. ft.
  • Single family
  • Sold
Listed by: owen halliday
Office: christie's international real estate sereno
MLS#:ML82031048
Source:CRMLS

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Price summary

  • Price:$5,900,000

About this home

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

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Home facts

  • Year built:1950
  • Listing ID #:ML82031048
  • Added:52 day(s) ago
  • Updated:March 07, 2026 at 07:24 AM

Rooms and interior

  • Bedrooms:5
  • Total bathrooms:3
  • Full bathrooms:2
  • Half bathrooms:1
  • Flooring:Carpet

Heating and cooling

  • Heating:Central

Structure and exterior

  • Roof:Shingle
  • Year built:1950
  • Lot Features:Level with Street
  • Architectural Style:Ranch
  • Foundation Description:Concrete Perimenter, Slab
  • Levels:1 Story

Schools

  • High school:Los Altos
  • Middle school:Other
  • Elementary school:Other

Utilities

  • Water:Public
  • Sewer:Public Sewer

Finances and disclosures

  • Price:$5,900,000
The information being provided by California Regional MLS (Southern California) is for the consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing. Any information relating to real estate for sale referenced on this web site comes from the Internet Data Exchange (IDX) program of the California Regional MLS (Southern California). CENTURY 21 Valley Properties is not a Multiple Listing Service (MLS), nor does it offer MLS access. This website is a service of CENTURY 21 Valley Properties, a broker participant of California Regional MLS (Southern California). This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. The accuracy of all information, regardless of source, including but not limited to open house information, square footages and lot sizes, 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 California Regional MLS (Southern California) 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 2021 California Regional MLS (Southern California). All rights reserved.

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