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$4,990,000

399 Hawthorne Avenue, Los Altos, CA 94022

28% above the Los Altos median of $3.9M (34 active listings)

24% of Los Altos listings have cut their price · half have been listed 34+ days

5beds
5.5baths
4,281sqft
$1166/sqft

About this home

Explore the potential of this approx. 10,044 SF flat lot in sought-after Los Altos, offered as land only for $4.99M or as a completed new construction home for $8.5M. The proposed two-story residence offers approx. 3,086 SF, 3 bed and 3.5 bath, plus an attached approx. 1,195 SF ADU with 2 bed and 2 bath, totaling approx. 4,281 SF of living space. The proposed plan features a dramatic two-story foyer and an open layout where the kitchen with large island, dining and living areas flow to an expansive rear deck for indoor-outdoor entertaining. The main level also offers a den with closet for a home office or guest room. The attached ADU has its own entrance, living room, kitchen, laundry, a primary suite with walk-in closet and private bath, plus a second bedroom and bath, ideal for multigenerational living or guests. Close to downtown Los Altos Village and its shops, restaurants and cafés, with easy commute access and acclaimed Los Altos schools. Buyers can personalize select design elements or enjoy the convenience of a completed home, which includes a builder warranty. Proposed plans, renderings, square footage and specifications are subject to change and final approval.

Property details

Property type
Single Family
Year built
2026
Lot size
10,044 sqft
Garage spaces
2
Stories
2
County
Santa Clara
Listed
today
MLS #
82066177
Listed by
Axis Elite Team · Aspire Homes

Features

  • Attached Garage
  • Heat Pump
  • Central AC
  • Fireplace: Other
  • Roof: Composition
  • Roof: Shingle
  • Roof: Other
  • Utilities: Public Utilities
  • Sewer: Sewer - Public
  • Water: Public

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Location

Approximate location based on the listing address.

Copyright 2026 MLSListings Inc. Based on information from MLSListings MLS as of 10/31/2026. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. MLS Listing #82066177. Listing courtesy of Aspire Homes.