bridgeMLS, Bay East AOR, or Contra Costa AOR #11219641
Mar 25, 2004
Sold
$590,000
$369/sq ft
Feb 11, 2004
Listing Removed
—
Feb 2, 2004
Listed
$599,950
$376/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #11212729
Jan 3, 2004
Listing Removed
—
Public Records
May 15, 1998
Sold
$112,000
$70/sq ft
Public Records
Jun 3, 1988
Sold
$120,000
$75/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$10,685 (+2.3%)
$256,674 + $598,907
$855,581
2024
$10,448 (+1.6%)
$251,642 + $587,166
$838,808
2023
$10,283 (+1.9%)
$246,709 + $575,655
$822,364
2022
$10,088 (+2.6%)
$237,130 + $553,304
$790,434
2021
$9,830 (+2.3%)
$237,130 + $553,304
$790,434
2020
$9,606 (−1.8%)
$232,482 + $542,458
$774,940
2019
$9,784 (+2.9%)
$230,100 + $536,900
$767,000
2018
$9,507 (+2.7%)
$225,588 + $526,372
$751,960
2017
$9,258 (+13.9%)
$216,828 + $505,933
$722,761
2016
$8,126 (+14.9%)
$216,828 + $505,933
$722,761
2015
$7,072 (−0.2%)
$195,000 + $455,000
$650,000
2014
$7,085 (+12.8%)
$177,000 + $413,000
$590,000
2013
$6,279 (+7.3%)
$177,000 + $413,000
$590,000
2012
$5,851 (−1.8%)
$156,000 + $364,000
$520,000
2011
$5,958 (−7.6%)
$144,900 + $338,100
$483,000
2010
$6,445 (−6.8%)
$147,000 + $343,000
$490,000
2009
$6,915 (−8.7%)
$159,900 + $373,100
$533,000
2008
$7,576
$171,900 + $401,100
$573,000
Tax history for 18701 Walnut Rd
Year
Property tax
Land + Additions
Assessment*
2025
$10,685 (+2.3%)
$256,674 + $598,907
$855,581
2024
$10,448 (+1.6%)
$251,642 + $587,166
$838,808
2023
$10,283 (+1.9%)
$246,709 + $575,655
$822,364
2022
$10,088 (+2.6%)
$237,130 + $553,304
$790,434
2021
$9,830 (+2.3%)
$237,130 + $553,304
$790,434
2020
$9,606 (−1.8%)
$232,482 + $542,458
$774,940
2019
$9,784 (+2.9%)
$230,100 + $536,900
$767,000
2018
$9,507 (+2.7%)
$225,588 + $526,372
$751,960
2017
$9,258 (+13.9%)
$216,828 + $505,933
$722,761
2016
$8,126 (+14.9%)
$216,828 + $505,933
$722,761
2015
$7,072 (−0.2%)
$195,000 + $455,000
$650,000
2014
$7,085 (+12.8%)
$177,000 + $413,000
$590,000
2013
$6,279 (+7.3%)
$177,000 + $413,000
$590,000
2012
$5,851 (−1.8%)
$156,000 + $364,000
$520,000
2011
$5,958 (−7.6%)
$144,900 + $338,100
$483,000
2010
$6,445 (−6.8%)
$147,000 + $343,000
$490,000
2009
$6,915 (−8.7%)
$159,900 + $373,100
$533,000
2008
$7,576
$171,900 + $401,100
$573,000
*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
Zoning
Permits
Beds
3
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
10,251 Sq. Ft.
Year renovated
1945
Sq. Ft.
1,520
Year built
1945
Style
Single Family Residential
County
Alameda County
APN
084D115503900
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 17, 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
Mar 22, 2024 • Final
Building
Install a roof-mounted solar photovoltaic system and an energy storage system with batteries. Install a new electrical panel and a wallbox electric vehicle charger.
Battery
Electrical
Ev charger
Solar
Sep 25, 2023 • Final
Building
Remove and replace the existing roofing with new composition asphalt shingles on a residential building. Use the existing roof deck and recycle the old roofing material.
Roofing
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
Garage Spaces: 2
Covered Spaces: 2
Parking Features: RV/Boat Parking
Interior
Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Other Bathrooms Included Features: Shower Over Tub
Exterior Features: Back Yard, Front Yard, Side Yard
Roof: Shingle
Property Information
Living Area: 1597
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1945
Lot Information
Other Structures: Shed(s)
Lot Size Square Feet: 10251
Lot Size Area: 0.23
Lot Size Units: Acres
Lot Size Acres: 0.23
Lot Features: Premium Lot
Utilities
Utility Information
Water Source: Public
Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: No Air Conditioning
Location
School Information
High School District: Castro Valley (510) 537-3000
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,520
Stories: 1.0
Lot Size: 10,251 square feet
Style: Single Family Residential
Year Built: 1945
Year Renovated: 1945
County: Alameda County
APN: 084D115503900
Home facts updated by county records on Sep 17, 2026
Around this home
Schools
Chabot Elementary School
Public K-5 • Assigned • 0.5mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 1.9mi
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
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...
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2004. This data may not match public records. Learn more.