$4,995,000 - 643 Jay Street, Los Altos

  • 5Beds
  • 3Baths
  • 1,408SQ. Feet
  • 0.46Acres

Los Altos Home Sale

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.

Sales Agent

Sam Smith
  • Sam Smith
  • San Clemente Realtor ®
  • Phone: 949-204-5110
  • Cell: 949-204-5110
  • Contact Agent Now

Amenities

  • Parking Spaces2
  • ParkingGated
  • # of Garages2
  • GaragesGated

School Information

  • DistrictOther
  • ElementaryOther
  • MiddleOther
  • HighLos Altos

Essential Information

  • MLS® #ML82031048
  • Price$4,995,000
  • Bedrooms5
  • Bathrooms3.00
  • Full Baths2
  • Half Baths1
  • Square Footage1,408
  • Acres0.46
  • Year Built1950
  • TypeResidential
  • Sub-TypeSingle Family Residence
  • StyleRanch
  • StatusClosed
  • Listing AgentOwen Halliday
  • Listing OfficeChristie's International Real Estate Sereno

Exterior

  • Lot DescriptionLevel
  • RoofShingle
  • FoundationConcrete Perimeter, Slab

Additional Information

  • Date ListedJanuary 13th, 2026
  • Days on Market8
  • ZoningR1
  • Short SaleN
  • RE / Bank OwnedN

Community Information

  • Address643 Jay Street
  • Area699 - Not Defined
  • CityLos Altos
  • CountySanta Clara
  • Zip Code94022

Interior

  • InteriorCarpet
  • HeatingCentral
  • CoolingNone
  • FireplaceYes
  • FireplacesLiving Room, Wood Burning
  • # of Stories1

Price Change History for 643 Jay Street, Los Altos, (MLS® #ML82031048)

Date Details Price Change
Closed
Pending (from Active)

Similar Type Properties to ML82031048, 643 Jay Street, Los Altos

Back to Results

Los Altos 690 Torwood Lane

$5,498,880
Los Altos,
3 Beds
3 Baths
3,293 SqFt
16 Days On Market
Community:

Los Altos 130 Garland Way

$4,998,000
Los Altos,
5 Beds
3 Baths
2,452 SqFt
6 Days On Market
Community:

Los Altos 124 Osage Avenue

$5,495,000
Los Altos,
7 Beds
3 Baths
2,874 SqFt
9 Days On Market
Community:

Los Altos 1 Hampton Court

$4,998,000
Los Altos,
4 Beds
3 Baths
2,335 SqFt
11 Days On Market
Community:

Similar Neighborhoods to "" in Los Altos, California

Back to Results

  • City:
    Los Altos
  • Price Range:
    $748,888 - $8,495,000
  • Current Listings:
    112
  • HOA Dues:
    $232
  • Average Price per Square Foot:
    $1,804

Back to Search Results

Based on information from California Regional Multiple Listing Service, Inc. as of April 22nd, 2026 at 7:27pm PDT. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.