California Dreaming! This fabulous home offers an ideal blend of comfort and modern living. The level-in entry welcomes you into a bright space featuring an open-concept living & dining room, stunning hardwood floors, & floor-to-ceiling windows. Main level includes three spacious bedrooms & two bathrooms, while downstairs offers a flexible living area with an additional bedroom suite, office, exercise room, bonus room & kitchen. Lower level can be accessed from either interior or exterior. It is almost like having two homes in one. The great room features a cozy fireplace as well. Outdoor Oasis: Beautifully landscaped backyard and drought-tolerant front yard & a bay-view deck. Prime Location: Near Carlos Bee Park & Castro Valley BART Close to Trader Joe’s, coffee shops, and dining
Sold for $1,315,000
$1,315,000
21531 Knoll Way, Castro Valley, CA 94546
4beds
3,048sqft
Single Family Residence
Built in 1955
8,712 Square Feet Lot
$1,331,500 Zestimate®
$431/sqft
$5,361 Estimated rent
Home value
$1,331,500
$1.20M - $1.48M
$5,361/mo
Zestimate® history
Owner options
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$5,361/mo
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$8,347/mo
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List your homeWhat's special
Cozy fireplaceBeautifully landscaped backyardExercise roomAdditional bedroom suiteStunning hardwood floorsFloor-to-ceiling windowsSpacious bedrooms
Zillow last checked:
Listing updated:
Listed by:
Julie Cuellas DRE #01252720 510-682-5665,
Red Oak Realty,
Terry Martinez DRE #01726031 510-772-3746,
Red Oak Realty
Bought with:
Bob Pace, DRE #01787031
Intero Real Estate Services
Source: bridgeMLS/CCAR/Bay East AOR,MLS#: 41090340
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 4
Kitchen
- Features: Dishwasher, Eat In Kitchen, Garbage Disposal, Microwave, Updated Kitchen
Heating
- Central
Cooling
- Ceiling Fan(s)
Appliances
- Included: Dishwasher, Microwave, Dryer, Washer
- Laundry: Dryer, Washer
Features
- Dining Area, Updated Kitchen
- Flooring: Tile, Carpet
- Number of fireplaces: 2
- Fireplace features: Family Room, Living Room
Interior area
- Total structure area: 3,048
- Total interior livable area: 3,048 sqft
Property
Parking
- Total spaces: 2
- Parking features: Garage - Attached
- Attached garage spaces: 2
Features
- Levels: Two Story
- Stories: 2
- Exterior features: Back Yard, Front Yard, Garden/Play, Terraced Down, Landscape Back, Landscape Front
- Pool features: None
- Fencing: Fenced
Lot
- Size: 8,712 sqft
Details
- Parcel number: 41518053
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Contemporary
- Property subtype: Single Family Residence
Materials
- Stucco
Condition
- Existing
- New construction: No
- Year built: 1955
Utilities & green energy
- Electric: No Solar
- Water: Public
Community & neighborhood
Location
- Region: Castro Valley
Other
Other facts
- Listing terms: Cash,Conventional
Price history
| Date | Event | Price |
|---|---|---|
| 4/25/2025 | Sold | $1,315,000+1.2%$431/sqft |
Source:  bridgeMLS/CCAR/Bay East AOR #41090340 Report a problem | ||
| 4/10/2025 | Pending sale | $1,300,000$427/sqft |
Source: bridgeMLS/CCAR/Bay East AOR #41090340 Report a problem | ||
| 3/21/2025 | Listed for sale | $1,300,000+188.9%$427/sqft |
Source: bridgeMLS/CCAR/Bay East AOR #41090340 Report a problem | ||
| 10/21/2010 | Sold | $450,000-9.1%$148/sqft |
Source:  CCAR #40471309 Report a problem | ||
| 10/4/2010 | Listed for sale | $495,000+12.8%$162/sqft |
Source: Dudum Real Estate Group Report a problem | ||
| 9/1/2010 | Listing removed | $439,000$144/sqft |
Source: TNC Report a problem | ||
| 7/29/2010 | Price change | $439,000-11.3%$144/sqft |
Source: Dudum Real Estate Group #40471309 Report a problem | ||
| 6/9/2010 | Price change | $495,000-0.6%$162/sqft |
Source: Empire Realty Associates Report a problem | ||
| 4/10/2010 | Price change | $498,000-5%$163/sqft |
Source: Empire Realty Associates Report a problem | ||
| 3/6/2010 | Price change | $524,000-4.7%$172/sqft |
Source: Empire Realty Associates Report a problem | ||
| 1/10/2010 | Listed for sale | $550,000-19.7%$180/sqft |
Source: Empire Realty Associates Report a problem | ||
| 10/12/2005 | Sold | $685,000$225/sqft |
Source: Public Record Report a problem | ||
| 10/21/2004 | Sold | $685,000+191.5%$225/sqft |
Source: Public Record Report a problem | ||
| 10/10/1995 | Sold | $235,000$77/sqft |
Source: Public Record Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $576,494 +2% |
| 2024 | $7,433 +1.1% | $565,194 +2% |
| 2023 | $7,351 +2.3% | $554,115 +2% |
| 2022 | $7,184 +1.2% | $543,253 +2% |
| 2021 | $7,097 +1.6% | $532,601 +1% |
| 2020 | $6,988 -0.4% | $527,143 +2% |
| 2019 | $7,019 +9.3% | $516,811 +2% |
| 2018 | $6,423 | $506,681 +2% |
| 2017 | $6,423 +6% | $496,750 +2% |
| 2016 | $6,057 +7.5% | $487,011 +1.5% |
| 2015 | $5,633 | $479,700 +2% |
| 2014 | $5,633 | $470,303 +0.5% |
| 2013 | -- | $468,180 +2% |
| 2012 | -- | $459,000 +2% |
| 2011 | -- | $450,000 +32.4% |
| 2010 | -- | $340,000 -9.3% |
| 2009 | -- | $375,000 -39.2% |
| 2008 | -- | $616,500 -13.5% |
| 2007 | -- | $712,673 +2% |
| 2006 | -- | $698,700 +2% |
| 2005 | -- | $685,000 +104.7% |
| 2004 | -- | $334,710 +1.9% |
| 2003 | -- | $328,575 +24.3% |
| 2002 | -- | $264,267 |
Find assessor info on the county website
Neighborhood: 94546
Nearby schools
GreatSchools rating
- 2/10Fairview Elementary SchoolGrades: K-6Distance: 1.9 mi
- 4/10Bret Harte Middle SchoolGrades: 7-8Distance: 1.2 mi
- 5/10Hayward High SchoolGrades: 9-12Distance: 1.4 mi
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Estimated market value
$1,331,500
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Estimated market value
$1,331,500
- California
- Alameda County
- Castro Valley
- 94546
- 21531 Knoll Way
Nearby cities
Nearby zip codes
Other Castro Valley Topics
