$925,000
SOLD JAN 12, 2026

20089 Emerald Ct Castro Valley, CA 94546

Castro Valley East Neighborhood
3 Beds
1.5 Baths
1,468 Sq Ft
7,439 Sq Ft Lot

Recently Sold

$630 Per Sq Ft

5% Below List Price

23 Days on Market

Highlights

  • Updated Kitchen
  • Midcentury Modern Architecture
  • No HOA
  • Marshall Elementary School Rated A
  • Solid Surface Countertops
  • 1 Car Direct Access Garage

About This Home

As of January 2026

Charming 4 Bedroom with 3rd more like a retreat with dressing room AND a Bonus Studio on a LARGE Lot in a Quiet Court Location tucked away on a peaceful court, this beautifully updated single-level home offers the perfect blend of comfort, style, and charm. Boasting 3 bedrooms and 1.5 baths, the home features a bright and airy open-concept layout with both a cozy living room and a spacious family room—ideal for gathering, relaxing, or entertaining. Set on a generous lot, the property includes multiple decks perfect for alfresco dining, morning coffee, or sunset lounging. The playful décor and whimsical touches throughout the home give it a distinctive charm, making each space full of personality and charm. The bonus detached studio/shed offers endless possibilities—whether used as a creative workspace, guest retreat, or quiet getaway—bringing even more versatility to this spacious property. The previous owners used it for a music studio! With its combination of updated features, functional layout, and a delightfully unique aesthetic, this home is a rare gem that balances everyday living that is cozy and enjoyable. Castro Valley Schools!! Great location!!

Last Agent to Sell the Property

Janella Anguiano

Century 21 Masters License #01369593 Listed on: 11/21/2025

Century 21 Masters

Last Buyer's Agent

Lynda Divito

Lpt Realty License #01437246

Lpt Realty

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1950

Lot Details

  • 7,439 Sq Ft Lot

Parking

  • 1 Car Direct Access Garage

Home Design

  • Midcentury Modern Architecture
  • Wood Siding

Interior Spaces

  • 1-Story Property
  • Wood Burning Fireplace
  • Family Room with Fireplace
  • Laminate Flooring
  • Stacked Washer and Dryer

Kitchen

  • Updated Kitchen
  • Gas Range
  • Dishwasher
  • Solid Surface Countertops

Bedrooms and Bathrooms

  • 3 Bedrooms

Utilities

  • Forced Air Heating and Cooling System
  • Gas Water Heater

Community Details

  • No Home Owners Association
  • Castro Valley Subdivision

Listing and Financial Details

  • Assessor Parcel Number 84C106472

Home Details

Home Type

Single Family

Year Built

Built in 1950

Lot Details

0

Parking

1

Listing Details

  • Stories: 1
  • Year Built: 1950
  • Property Sub Type: Detached
  • Prop. Type: Residential
  • Subdivision Name: Castro Valley
  • Directions: Center>Gem>Emerald
  • Architectural Style: Mid Century Modern
  • Garage Yn: Yes
  • Unit Levels: One Story
  • New Construction: No
  • remarks11: SELLER MOTIVATED!!! Disc IO link available. Call agent with any questions. VACANT! Easy to show! Thanks in advance for showing! Square footage does not include the bonus building!! Roof is 5 years old on the home and 3 years on the building. The house roof was insulated when replaced and is a white roof, which makes a huge difference in the summer. Call agent for TERMS and ANY QUESTIONS. Foundation repair was just completed, see DISC IO link.
  • remarks22: Janella Anguiano - 510-755-5199 - Charming 4 Bedroom with 3rd more like a retreat with dressing room AND a Bonus Studio on a LARGE Lot in a Quiet Court Location tucked away on a peaceful court, this beautifully updated single-level home offers the perfect blend of comfort, style, and charm. Boasting 3 bedrooms and 1.5 baths, the home features a bright and airy open-concept layout with both a cozy living room and a spacious family room—ideal for gathering, relaxing, or entertaining. Set on a generous lot, the property includes multiple decks perfect for alfresco dining, morning coffee, or sunset lounging. The playful décor and whimsical touches throughout the home give it a distinctive charm, making each space full of personality and charm. The bonus detached studio/shed offers endless possibilities—whether used as a creative workspace, guest retreat, or quiet getaway—bringing even more versatility to this spacious property. The previous owners used it for a music studio! With its combination of updated features, functional layout, and a delightfully unique aesthetic, this home is a rare gem that balances everyday living that is cozy and enjoyable. Castro Valley Schools!! Great location!!
  • Special Features: None

Interior Features

  • Flooring: Laminate, Other
  • Appliances: Dishwasher, Gas Range, Refrigerator, Dryer, Washer, Gas Water Heater
  • Other Equipment: See Remarks
  • Full Bathrooms: 1
  • Total Bedrooms: 3
  • Fireplace Features: Family Room, Wood Burning
  • Fireplaces: 1
  • Fireplace: Yes
  • Room Kitchen Features: Counter - Solid Surface, Dishwasher, Gas Range/Cooktop, Refrigerator, Updated Kitchen

Exterior Features

  • Roof: Other
  • Lot Features: Court, Landscaped
  • Pool Features: None
  • Pool Private: No
  • Construction Type: Wood Siding
  • Property Condition: Existing

Garage/Parking

  • Garage Spaces: 1
  • Parking Features: Attached, Int Access From Garage

Utilities

  • Heating: Forced Air
  • Cooling: Central Air
  • Laundry Features: Laundry Room, Washer/Dryer Stacked Incl
  • Cooling Y N: Yes
  • Heating Yn: Yes
  • Electric: No Solar
  • Water Source: Public

Condo/Co-op/Association

  • Association: No

Lot Info

  • Lot Size Sq Ft: 7439
  • Parcel Number: 84C106472

Matterport 3D Tours

Floorplans

Ownership History

Date Name Owned For Owner Type

Purchase Details

Listed on
Feb 6, 2020
Closed on
Feb 28, 2020
Sold by
Gonzalez Robert and Gonzalez Nicole
Bought by
Henderson Ian C and Zager Amy L
Seller's Agent
David Gunderman
Kw Advisors East Bay
Buyer's Agent
Parisa Samimi
Real Brokerage Technologies
List Price
$749,000
Sold Price
$930,000
Premium/Discount to List
$181,000
24.17%

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
1.90%
Original Mortgage
$630,000
Outstanding Balance
$556,630
Interest Rate
3.6%
Mortgage Type
New Conventional
Estimated Equity
$480,816

Purchase Details

Closed on
Mar 12, 2016
Sold by
Gonzalez Elisa and Gonzalez Urbando
Bought by
Gonzalez Robert and Gonzalez Nicole

Purchase Details

Closed on
Apr 13, 2012
Sold by
Gonzalez Elisa and Gonzalez Urbano
Bought by
Gonzalez Elisa and Gonzalez Urbano

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$302,141
Interest Rate
4.4%
Mortgage Type
FHA

Purchase Details

Closed on
Mar 8, 2012
Sold by
Thompson Richard E and Kingma Hope E
Bought by
Gonzalez Elisa and Gonzalez Urbano

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$302,141
Interest Rate
4.4%
Mortgage Type
FHA

Purchase Details

Closed on
Jan 17, 2001
Sold by
Gularte Geraldine and Gularte Vernon
Bought by
Thompson Richard E and Kingma Hope E

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$275,000
Interest Rate
7.41%

Purchase Details

Closed on
Mar 16, 1994
Sold by
Gularte Vernon G and Gularte Geraldine
Bought by
Gularte Vernon G and Gularte Geraldine
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

Date Type Sale Price Title Company
Grant Deed $930,000 Placer Title Company
Interfamily Deed Transfer -- None Available
Interfamily Deed Transfer -- None Available
Grant Deed $310,000 Cornerstone Title Company
Grant Deed $319,000 American Title Co
Quit Claim Deed -- --
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Open $630,000 New Conventional
Previous Owner $302,141 FHA
Previous Owner $275,000 No Value Available
Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft Prior Sale
01/12/2026 01/12/26 Sold $925,000 -5.1% $630 / Sq Ft
12/14/2025 12/14/25 Pending -- -- --
11/21/2025 11/21/25 For Sale $975,000 +4.8% $664 / Sq Ft
06/16/2025 06/16/25 Off Market $930,000 -- --
02/04/2025 02/04/25 Off Market $930,000 -- --
03/10/2020 03/10/20 Sold $930,000 +24.2% $634 / Sq Ft View Prior Sale
02/19/2020 02/19/20 Pending -- -- --
02/06/2020 02/06/20 For Sale $749,000 -- $510 / Sq Ft
Source: Bay East Association of REALTORS®

Tax History Compared to Growth

Source: Public Records

Tax History

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 $12,509 $1,010,075 $305,122 $711,953
2024 $12,509 $990,136 $299,141 $697,995
2023 $12,317 $977,587 $293,276 $684,311
2022 $12,088 $951,420 $287,526 $670,894
2021 $11,782 $932,634 $281,890 $657,744
2020 $5,760 $438,310 $131,492 $306,818
2019 $5,859 $429,718 $128,914 $300,804
2018 $5,692 $421,295 $126,387 $294,908
2017 $5,541 $413,037 $123,910 $289,127
2016 $5,216 $400,167 $120,050 $280,117
2015 $4,874 $394,158 $118,247 $275,911
2014 $4,806 $386,438 $115,931 $270,507
Source: Public Records

Agents Affiliated with this Home

  • Janella Anguiano

    Seller's Agent in 2026

    Janella Anguiano

    Century 21 Masters

    (510) 755-5199

    4 in this area

    94 Total Sales

    Janella Anguiano
    Section Image
  • Lynda Divito

    Buyer's Agent in 2026

    Lynda Divito

    Lpt Realty

    (415) 640-0901

    1 in this area

    75 Total Sales

    Lynda Divito
    Section Image

  • D

    Seller's Agent in 2020

    David Gunderman

    Kw Advisors East Bay

    (510) 775-1079

    475 Total Sales

    David Gunderman
    Section Image
  • Parisa Samimi

    Buyer's Agent in 2020

    Parisa Samimi

    Real Brokerage Technologies

    (510) 410-4050

    60 Total Sales

    Parisa Samimi
    Section Image
See All Agents

Map

Source: Bay East Association of REALTORS®

MLS Number: 41118026

Bay East Association of REALTORS®

APN: 084C-1064-072-00

California Alameda County Castro Valley 94546 Castro Valley East

20089 Emerald Ct, Castro Valley, CA

Sold

Detached

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.

Bay East Association of REALTORS® Bay East ©2025. CCAR ©2025. bridgeMLS ©2025. Information Deemed Reliable But Not Guaranteed. This information is being provided by the Bay East MLS, or CCAR MLS, or bridgeMLS. The listings presented here may or may not be listed by the Broker/Agent operating this website. This information is intended for the personal use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Nearby Homes