Enjoy a serene oasis in Castro Valley's Baywood District. This 3BR, 2BA home is filled with natural light and boasts a beautifully landscaped front & backyard ideal for entertaining. Relax in a garden featuring fragrant roses, Meyer lemon & maple trees, camelias, iris & daffodils. The formal living room features hardwood floors & an elegant hand crafted fireplace. The dining area is bordered by a custom wood credenza. The kitchen highlights granite countertops, stylish cabinetry, gas range & Bosch dishwasher. The primary bedroom features a large walk-in closet, bay window, ensuite bathroom offering a soak tub, dual sinks, large linen closet & glass-encased shower. The Family Room defines the heart of the home; the perfect location for a family & friend's media/social center. Through the room's sliding glass door, you'll gain easy access to the backyard deck and trellis. Delight in BBQ's & family gatherings in the beautiful backyard that has a unique studio which could be used for a home gym, office or artist retreat. The residence has a garage with washer/ dryer, cabinets & sink. Another home feature is more storage space located in the loft & side utility shed. Close to downtown Castro Valley restaurants & shopping; you have convenient access to BART and freeways. Enjoy nature & hiking trails at nearby scenic Lake Chabot. The Redwood Canyon Golf Course is 10 min away.
Single-familyProperty Type
1946Year Built
6,600 sq ftLot Size
$597Price/Sq.Ft.
1 garage spacesParking
Listed by Fred Nelson•DRE #01878084• Coldwell Banker Realty
•707-503-9346 (agent)
•fred.nelson1@me.com (agent)
Listed by David Smadbeck•DRE #01392341• Coldwell Banker Realty
•415-497-9604 (agent)
•david@marinprop.com (agent)
Bought with Dannie Baker•DRE #02036950• Legacy Real Estate & Assoc.
Bought with Kristy Peixoto•DRE #01256255• Legacy Real Estate & Assoc.
Est. $3,796 per month, based on comparable rentals
Sale and tax history for 21451 Rizzo Ave
Sale History
Tax History
Date
Event
Price
Public Records
Jul 9, 2026
Sold
$985,000
$597/sq ft
BAREIS #326037954
Jul 9, 2026
Sold
$984,777
$597/sq ft
Jul 2, 2026
Pending
—
Jun 20, 2026
Contingent
—
Jun 5, 2026
Relisted
—
May 1, 2026
Listed
$959,000
$581/sq ft
Public Records
Oct 25, 1985
Sold
$102,000
$62/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$4,653 (+2.7%)
$96,579 + $225,352
$321,931
2024
$4,532 (+2.1%)
$94,686 + $220,934
$315,620
2023
$4,436 (+2.5%)
$92,829 + $216,602
$309,431
2022
$4,327 (+1.3%)
$89,225 + $208,192
$297,417
2021
$4,271 (+1.4%)
$89,225 + $208,192
$297,417
2020
$4,210 (−0.6%)
$87,476 + $204,111
$291,587
2019
$4,237 (+6.1%)
$86,579 + $202,019
$288,598
2018
$3,992 (+2.6%)
$84,882 + $198,058
$282,940
2017
$3,892 (+6.2%)
$81,586 + $190,369
$271,955
2016
$3,663 (+2.9%)
$81,586 + $190,369
$271,955
2015
$3,559 (+5.7%)
$79,987 + $186,637
$266,624
2014
$3,366 (+1.5%)
$77,243 + $180,234
$257,477
2013
$3,316 (+2.3%)
$77,243 + $180,234
$257,477
2012
$3,243 (+2.3%)
$76,894 + $179,420
$256,314
2011
$3,168 (+2.2%)
$75,387 + $175,903
$251,290
2010
$3,100 (−1.1%)
$73,909 + $172,454
$246,363
2009
$3,136 (+4.5%)
$73,356 + $171,165
$244,521
2008
$3,001
$73,531 + $171,572
$245,103
Public record
Public record
Zoning
Permits
Beds
3
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
6,600 Sq. Ft.
Year renovated
1973
Sq. Ft.
1,650
Year built
1973
Style
Single Family Residential
County
Alameda County
APN
415 006006700
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 16, 2026.
R1
Single-Family Residence Districts
Single-family residence districts, hereinafter designated as R-1 districts, are established to provide for and protect established neighborhoods of one-family dwellings, and to provide space in suitable locations for additional development of this kind, together with appropriate community facilities and allowance for restricted interim cultivation of the soil compatible with such low-density residential development.
Permitted uses
Include but are not limited to:
Housing-Single unit
Agriculture-Cropland
Agriculture-Grove / orchard
Aug 30, 2024 • Final
Building
Replace duct work in the attic of a residential building.
HVAC
Nov 16, 2016 • Final
Building
Remove and replace the forced air unit.
HVAC
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 & Garage Information
Parking Total: 3
Parking Features: Attached, Garage Door Opener, Interior Access
Garage Spaces: 1
Interior
Bathroom Information
# of Bathrooms (Total): 2
# of Bathrooms (Full): 2
Bedroom Information
# of Bedrooms (Total): 3
Heating & Cooling
Cooling: Ceiling Fan(s)
Heating: Central
Interior Features
Fireplaces Total: 1
Fireplace Features: Gas Log
Laundry Features: In Garage
# of Stories: 1
Room Information
Basement: None
Levels: One
Main Level: Bedroom(s), Dining Room, Family Room, Full Bath(s), Garage, Kitchen, Living Room, Street Entrance
Exterior
Exterior Features
Allows Horses: No
Pool Information
Has Private Pool: No
Has Spa: No
Property Information
ADU 2nd Unit: No
Property Type: Residential
Property Sub Type: Single Family Residence
Lot Information
Lot Size Square Feet: 6,600
Lot Size Acres: 0.1515
Lot Features: Auto Sprinkler F&R
Power Production Information
Type: None
Size: 0.00
Year Install: 0
Utilities
Utilities Information
Utilities: Cable Connected, Internet Available, Natural Gas Connected
Sewer: Public Sewer
Location
HOA Information
Association YN: No
Community Information
Senior Community: No
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,650
Stories: 1.0
Lot Size: 6,600 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: 1973
County: Alameda County
APN: 415 006006700
Home facts updated by county records on Sep 16, 2026
Around this home
Schools
Fairview Elementary School
Public K-6 • Assigned • 1.6mi
2/10
Bret Harte Middle School
Public 7-8 • Assigned • 1.3mi
4/10
Hayward High School
Public 9-12 • Assigned • 1.4mi
5/10
Provided by GreatSchools
Local insights from Redfin agents
Castro Valley's fall market offers great buyer leverage. While median prices hold steady around $1.2M, increased inventory gives you room to negotiate on homes needing updates. Turnkey properties still move fast in under 15 days, so act quickly with...
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
4/10 Heat Factor
7 days above 88° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
7/10 Air Factor
12 unhealthy days expected this year, 12 days in 30 years
Provided by First Street
Historical weather
Castro Valley, CA • 94546
Average low and high temperatures (°F)
63
43
64
46
71
49
69
49
73
53
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54
75
57
79
57
79
60
77
54
65
48
61
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
84/ 100
Very good sunlight
Sunscore
This home receives average direct sun exposure in Castro Valley. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.7 hrs
5.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.07M – $1.29M
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