NOT LISTED FOR SALE

21 Atherton Ave Atherton, CA 94027

Atherton Area

Estimated Value: $5,126,000 - $10,009,431

4 Beds
4.5 Baths
4,240 Sq Ft
$1,814/Sq Ft Est. Value

Sale Details

Date Sold: May 30, 2014

Last sale price $4,100,003 $967 Per Sq Ft

Est. 88% increase in value since last sale

Current estimated payment $46,474 / mo

15 Days on Market

Highlights

  • Pool
  • Primary Bedroom Suite
  • Wood Flooring
  • Encinal Elementary School Rated A
  • Fireplace in Primary Bedroom
  • Main Floor Bedroom

About This Home

As of May 2014

Prestigious West Atherton, listed as Forbes most expensive areas in America, this upscale estate presents a park-like setting. This exceptional home incorporates a sumptuous collection of formal and casual living spaces for grand scale entertaining and everyday living. Rich architectural design & detail, Sparkling pool& spa, mnts to highly regarded Menlo schools, shops & restaurants, Caltrain

Last Agent to Sell the Property

Alicia Sandoval

Keller Williams Palo Alto License #01475157 Listed on: 04/14/2014

Keller Williams Palo Alto

Last Buyer's Agent

Amar Amarnath

Keller Williams Palo Alto License #01889230

Keller Williams Palo Alto

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1946

Lot Details

  • Front and Back Yard Sprinklers
  • Sprinklers on Timer
  • Zoning described as R1

Parking

  • 2 Car Garage
  • Garage Door Opener

Home Design

  • Shake Roof
  • Concrete Perimeter Foundation

Interior Spaces

  • 4,240 Sq Ft Home
  • 2-Story Property
  • Wet Bar
  • Skylights
  • Gas Log Fireplace
  • Bay Window
  • Formal Entry
  • Family Room with Fireplace
  • Living Room with Fireplace
  • Formal Dining Room
  • Neighborhood Views

Kitchen

  • Breakfast Area or Nook
  • Breakfast Bar
  • Cooktop
  • Dishwasher
  • Disposal

Flooring

  • Wood
  • Tile

Bedrooms and Bathrooms

  • 4 Bedrooms
  • Main Floor Bedroom
  • Fireplace in Primary Bedroom
  • Primary Bedroom Suite

Laundry

  • Dryer
  • Washer

Pool

Outdoor Features

  • Covered Patio or Porch

Utilities

  • Forced Air Heating System
  • 220 Volts
  • Sewer Within 50 Feet

Listing and Financial Details

  • Assessor Parcel Number 070-221-100

Home Details

Home Type

Single Family

Year Built

Built in 1946

Lot Details

0.79 Acres

Parking

2

Listing Details

  • Subclass: Single Family Home
  • Sale Price Per Sq Ft: 966.98
  • Level Street Main: 2 or more Primary Suites, Bedroom(s)
  • Listing Class: Residential
  • Structure Sq Ft: 4240
  • Incorporated: Yes
  • Map Book Page: 790
  • Map Side Coordinate: 2
  • Map Top Coordinate: D
  • Thomas Bros Page: 790
  • Thomas Brothers: D2
  • Year Built: 1946
  • Zoning Description: R1
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Family Room: Separate Family Room
  • Fireplace: Family Room, Living Room, Primary Bedroom, Gas Log, Gas Starter, Yes
  • Dining Room: Formal Dining Room, Breakfast Nook, Breakfast Bar
  • Kitchen: Pantry, Dishwasher, Cooktop, Garbage Disposal, Refrigerator, 220 Volt Outlet
  • Living Sq Ft: 4240
  • Stories: 2
  • Bedrooms: Primary Suite / Retreate - 2+, Ground Floor Bedroom
  • Laundry: In Laundry Room, Dryer, Washer, 220 Volt Outlet
  • Flooring: Carpet - Area, Tile, Hardwood
  • Additional Rooms: Formal Entry
  • Maximum Bathrooms: 5
  • Minimum Bathrooms: 5
  • Full Bathrooms: 4
  • Half Bathrooms: 1
  • Total Bedrooms: 4

Exterior Features

  • Foundation: Concrete Perimeter
  • Pool Description: Pool - Yes
  • Roof: Shake
  • View: Local/Neighborhood
  • Yard/Grounds: Patio(s)/Deck(s) - Covered, Sprinkler(s) - Front, Sprinkler(s) - Rear, Sprinklers - Auto
  • Pool: Yes
  • Exterior: Stucco

Garage/Parking

  • Garage Spaces: 2
  • Garage Parking Features: Gate / Door Opener

Utilities

  • Heating System: Forced Air
  • Sewer/Septic System: Sewer in Street, Sewer Connected

Association/Amenities

  • Amenities Miscellaneous: Wet Bar, Bay Window

Schools

  • High School: 658

Lot Info

  • Parcel Number: 070-221-100
  • List Price per Sq Ft: 943.37
  • Lot Size Area Minimum Units: Square Feet
  • Minimum Lot Size: 34410.00
  • Lot Size Area Maximum Units: Square Feet
  • Lot Size Area Max Search: 34410.00
  • Lot Size Area Min Search: 34410.00
  • Maximum Lot Size: 34410.00
  • Map Book: Thomas Bros

Green Features

  • Energy Features: Skylight

Multi Family

  • Maximum Building Height: 2
  • Minimum Building Height: 2

MLS Schools

  • High School District Text: Sequoia Union High
  • Elementary School Text: Encinal Elementary
  • High School Text: Menlo-Atherton High
  • Middle School Text: Hillview Middle

Ownership History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Name Owned For Owner Type

Purchase Details

Listed on
Apr 14, 2014
Closed on
May 23, 2014
Sold by
Bought by
Seller's Agent
Alicia Sandoval
Keller Williams Palo Alto
Buyer's Agent
Amar Amarnath
Keller Williams Palo Alto
List Price
$3,999,888
Sold Price
$4,100,003
Premium/Discount to List
$100,115
2.5%
Current Estimated Value
$7,691,858

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$3,591,855
Avg. Annual Appreciation
5.33%
Original Mortgage
$2,870,000
Interest Rate
0.0337%
Mortgage Type
Adjustable Rate Mortgage/ARM

Purchase Details

Closed on
Nov 9, 2010
Sold by
Bought by

Purchase Details

Closed on
Apr 25, 2001
Sold by
Bought by

Purchase Details

Closed on
Mar 19, 1996
Sold by
Bought by
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

Not Available

Collateral Analytics does not have data for the current month. Please view the chart for historical values.

ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

Not Available

ICE Mortgage Technology does not have data for the current month. Please view the chart for historical values.

First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

Not Available

First American does not have data for the current month. Please view the chart for historical values.

Quantarium

Quantarium Quantarium’s valuation service, repeatedly proven the industry’s most accurate and comprehensive, is supercharged with a self-learning and auto-tuning AI engine that continually becomes smarter and more accurate as it processes daily inputs from the industry’s leading RE data lake.

Not Available

Quantarium does not have data for the current month. Please view the chart for historical values.

Average Value
Not Available
List Price
Sold Price
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area

Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
$4,100,500 Old Republic Title Company
$3,100,000 First American Title Company
-- First American Title Company
-- --
-- Commonwealth Land Title Co
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Open $2,456,000
Closed $2,815,000
Closed $2,870,000
Previous Owner $500,000
Previous Owner $465,000
Previous Owner $500,000
Source: Public Records

Property History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Event Price List to Sale Price per Sq Ft
05/30/2014 05/30/14 Sold $4,100,003 +2.5% $967 / Sq Ft
04/29/2014 04/29/14 Pending -- -- --
04/14/2014 04/14/14 For Sale $3,999,888 -- $943 / Sq Ft
Source: MLSListings

Tax History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $56,215 $5,026,643 $3,690,457 $1,336,186
2023 $56,215 $4,831,454 $3,547,153 $1,284,301
2022 $53,814 $4,736,720 $3,477,601 $1,259,119
2021 $52,832 $4,643,844 $3,409,413 $1,234,431
2020 $52,397 $4,596,228 $3,374,454 $1,221,774
2019 $51,774 $4,506,107 $3,308,289 $1,197,818
2018 $50,505 $4,417,753 $3,243,421 $1,174,332
2017 $50,527 $4,331,131 $3,179,825 $1,151,306
2016 $49,313 $4,246,208 $3,117,476 $1,128,732
2015 $48,881 $4,182,427 $3,070,649 $1,111,778
2014 $38,489 $3,239,882 $2,612,808 $627,074
Source: Public Records

Agents Affiliated with this Home

  • Alicia Sandoval

    Seller's Agent in 2014

    Alicia Sandoval

    Keller Williams Palo Alto

    (650) 454-8536

    14 Total Sales

    Alicia Sandoval
    Section Image
  • Amar Amarnath

    Buyer's Agent in 2014

    Amar Amarnath

    Keller Williams Palo Alto

    (650) 686-2627

    216 Total Sales

    Amar Amarnath
    Section Image
See All Agents

Map

Source: MLSListings

MLS Number: ML81412286

MLSListings

APN: 070-221-100

California San Mateo County Atherton 94027

21 Atherton Ave, Atherton, CA

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

MLSListings Property Information © 2026 MLSListings Inc. All rights reserved. Listing information is deemed reliable but not guaranteed. Certain information contained herein is derived from information which is the licensed property of, and copyrighted by, MLSListings Inc. The viewer acknowledges ownership and validity of its copyright. Information provided is for personal, non-commercial use by a viewer with a bona fide interest in the purchase or sale of real estate of the type being offered via this website or other electronic means. The viewer is prohibited from copying, redistributing or retransmitting any of the data or information provided by MLSListing, Inc.

Nearby Homes
Your Personal Tour Guide

Ask me questions while you tour the home.