Discover a rare opportunity in a prime Castro Valley location! This well-maintained duplex sits on a massive lot, offering endless possibilities for expansion—build additional units, add ADUs, or create your dream outdoor retreat (buyer to verify with county). One unit is currently vacant and move-in ready, featuring fresh interior paint and brand-new carpet, ideal for an owner-occupant or to attract quality tenants. The other unit provides steady rental income, making this a smart investment with immediate upside. Inside, both units offer bright and functional living spaces with charming vintage touches. The expansive backyard is a blank canvas—perfect for gardening, outdoor entertaining, or future development. A detached shed adds storage or workshop flexibility. Conveniently located near top-rated Castro Valley schools, BART, shopping, and commuter routes, this property combines potential, location, and versatility. Don’t miss out on this unique investment or house-hacking opportunity in one of the East Bay’s most desirable communities!
Multi-familyProperty Type
1948Year Built
0.26 acresLot Size
$676Est. Price/Sq.Ft.
Listed by Lily Do•DRE #01728793• Compass
Bought with Stacy Coppola•DRE #01901375• RE/MAX Accord
Two homes are available. The front property is tenant-occupied. The rear home features carpeting throughout, two bedrooms, one bathroom, and an older kitchen with vinyl sheet flooring. Both share a large backyard offering vast potential.
1 year ago• May not reflect the current state of the home
bridgeMLS, Bay East AOR, or Contra Costa AOR #41116036
Nov 26, 2025
Sold
$1,075,000
$650/sq ft
Nov 12, 2025
Pending
—
Oct 28, 2025
Listed
$1,050,000
$635/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #40630095
Oct 17, 2013
Sold
$569,000
$344/sq ft
Sep 14, 2013
Pending
—
Sep 4, 2013
Listed
$509,999
$308/sq ft
+1
Great duplex in good rental area. Property condition good as per successor trustee.
Year
Property tax
Land + Additions
Assessment*
2025
$9,834 (+2.5%)
$209,245 + $488,240
$697,485
2024
$9,596 (+1.9%)
$209,245 + $488,240
$697,485
2023
$9,414 (+2.2%)
$205,143 + $478,668
$683,811
2022
$9,209 (+2.7%)
$197,178 + $460,084
$657,262
2021
$8,965 (+2.4%)
$197,178 + $460,084
$657,262
2020
$8,754 (−1.7%)
$193,314 + $451,066
$644,380
2019
$8,903 (+3.0%)
$191,332 + $446,442
$637,774
2018
$8,648 (+2.8%)
$187,582 + $437,691
$625,273
2017
$8,416 (+5.0%)
$180,300 + $420,700
$601,000
2016
$8,014 (+7.1%)
$180,300 + $420,700
$601,000
2015
$7,484 (+1.6%)
$176,764 + $412,451
$589,215
2014
$7,365 (+57.5%)
$170,700 + $398,300
$569,000
2013
$4,677 (+2.4%)
$170,700 + $398,300
$569,000
2012
$4,565 (+1.5%)
$100,254 + $233,926
$334,180
2011
$4,500 (+0.8%)
$98,288 + $229,340
$327,628
2010
$4,462
$96,361 + $224,843
$321,204
2009
$4,462 (+3.6%)
$95,641 + $223,164
$318,805
2008
$4,305
$95,869 + $223,696
$319,565
Tax history for 21032 Baker Rd
Year
Property tax
Land + Additions
Assessment*
2025
$9,834 (+2.5%)
$209,245 + $488,240
$697,485
2024
$9,596 (+1.9%)
$209,245 + $488,240
$697,485
2023
$9,414 (+2.2%)
$205,143 + $478,668
$683,811
2022
$9,209 (+2.7%)
$197,178 + $460,084
$657,262
2021
$8,965 (+2.4%)
$197,178 + $460,084
$657,262
2020
$8,754 (−1.7%)
$193,314 + $451,066
$644,380
2019
$8,903 (+3.0%)
$191,332 + $446,442
$637,774
2018
$8,648 (+2.8%)
$187,582 + $437,691
$625,273
2017
$8,416 (+5.0%)
$180,300 + $420,700
$601,000
2016
$8,014 (+7.1%)
$180,300 + $420,700
$601,000
2015
$7,484 (+1.6%)
$176,764 + $412,451
$589,215
2014
$7,365 (+57.5%)
$170,700 + $398,300
$569,000
2013
$4,677 (+2.4%)
$170,700 + $398,300
$569,000
2012
$4,565 (+1.5%)
$100,254 + $233,926
$334,180
2011
$4,500 (+0.8%)
$98,288 + $229,340
$327,628
2010
$4,462
$96,361 + $224,843
$321,204
2009
$4,462 (+3.6%)
$95,641 + $223,164
$318,805
2008
$4,305
$95,869 + $223,696
$319,565
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Permits
Beds
3
Baths
2
Stories
2
Lot width
—
Lot depth
—
Lot size
0.26 Acres
Year renovated
1948
Sq. Ft.
1,654
Year built
1948
Style
Multi-Family (2-4 Unit)
County
Alameda County
APN
084A001702500
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 28, 2026.
May 11, 2026 • Active
Building
Upgrade the main electrical panel.
Electrical
Dec 14, 2005 • Final
Building
Remove and replace ceiling sheetrock and sheetrock around the garage door. Apply new stucco as needed to expose and refinish the affected areas.
Remodel
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking Information
Total # of Parking Spaces: 2
Parking Features: Detached
Interior
Interior Features
Appliances: Dryer, Washer, Gas Water Heater
Laundry Features: Dryer, Laundry Room, Washer
Flooring: Carpet
Unit 1 Information
Unit 1 # of Bathrooms: 1
Unit 1 Dining Room: Yes
Unit 1 Air Conditioning: No
Unit 1 Parking Spaces: 2
Unit 2 Information
Unit 2 # of Bathrooms: 1
Unit 2 Dining Room: No
Unit 2 Air Conditioning: No
Unit 2 # of Parking Spaces: 2
Multi-Unit Information
Number Of Units Total: 2
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 1,654
Exterior Features
Exterior Features: Back Yard
Property Information
Living Area: 1654
Living Area Units: Square Feet
Property Type: Residential Income
Property Sub Type: DUPLEX
Year Built: 1948
Lot Information
Lot Size Square Feet: 11250
Lot Size Area: 0.26
Lot Size Units: Acres
Lot Size Acres: 0.26
Lot Features: Premium Lot
Utilities
Utility Information
Separate Meter: Electric, Gas, Water
Heating & Cooling
Has Heating
Heating: Wall Furnace
Cooling: No Air Conditioning
Location
School Information
High School District: Castro Valley (510) 537-3000
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,654
Stories: 2.0
Lot Size: 0.26 acres
Style: Multi-Family (2-4 Unit)
Year Built: 1948
Year Renovated: 1948
County: Alameda County
APN: 084A001702500
Home facts updated by county records on Jul 28, 2026
Around this home
Schools
Castro Valley Elementary School
Public K-5 • Assigned • 0.3mi
6/10
Creekside Middle School
Public 6-8 • Assigned • 1.4mi
10/10
Castro Valley High School
Public 9-12 • Assigned • 0.9mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
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Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2025. This data may not match public records. Learn more.