Upper Valley 1654 sq ft home on 13,886 sq ft lot with lots of offstreet parking for RVs or boat. Updated kitchens and baths. Detached 2 car garage. Family Room.
Single-familyProperty Type
1935Year Built
0.32 acresLot Size
$806Est. Price/Sq.Ft.
2 car garageParking
Listed by Catherine Brent•DRE #01088138• The Prudential California
Bought with Mike Brisco•DRE #00929228• CENTURY 21 OLIVER JACKSON
bridgeMLS, Bay East AOR, or Contra Costa AOR #40045740
Nov 24, 2004
Sold
$600,000
$363/sq ft
Oct 22, 2004
Listing Removed
—
Oct 12, 2004
Listed
$599,900
$363/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #11113289
Oct 8, 2001
Sold
$433,000
$262/sq ft
Sep 19, 2001
Listing Removed
—
Sep 9, 2001
Listed
$429,000
$259/sq ft
OOZING WITH CHARM & CHARACTER! TREMENDOUS POTENTIAL FOR UPPER VALLEY `MINI ESTATE`SET BACK FR ST ON ALMOST 1/3A, CIRCULAR DRIVE
Year
Property tax
Land + Additions
Assessment*
2025
$12,501 (+2.2%)
$250,880 + $741,797
$992,677
2024
$12,227 (+1.6%)
$250,880 + $741,797
$992,677
2023
$12,039 (+1.9%)
$245,962 + $727,257
$973,219
2022
$11,814 (+2.6%)
$236,413 + $699,022
$935,435
2021
$11,515 (+2.3%)
$236,413 + $699,022
$935,435
2020
$11,253 (−1.8%)
$231,778 + $685,318
$917,096
2019
$11,464 (+2.9%)
$229,402 + $678,293
$907,695
2018
$11,141 (+2.7%)
$224,906 + $664,998
$889,904
2017
$10,849 (+5.1%)
$216,176 + $639,185
$855,361
2016
$10,323 (+7.0%)
$216,176 + $639,185
$855,361
2015
$9,648 (+1.1%)
$211,939 + $626,656
$838,595
2014
$9,547 (+11.9%)
$204,669 + $605,159
$809,828
2013
$8,534 (+0.9%)
$204,669 + $605,159
$809,828
2012
$8,458 (−1.2%)
$216,300 + $504,700
$721,000
2011
$8,560 (+6.6%)
$214,500 + $500,500
$715,000
2010
$8,031 (−4.9%)
$216,000 + $504,000
$720,000
2009
$8,441 (+10.7%)
$199,800 + $466,200
$666,000
2008
$7,625
$210,000 + $490,000
$700,000
Tax history for 18765 Walnut Rd
Year
Property tax
Land + Additions
Assessment*
2025
$12,501 (+2.2%)
$250,880 + $741,797
$992,677
2024
$12,227 (+1.6%)
$250,880 + $741,797
$992,677
2023
$12,039 (+1.9%)
$245,962 + $727,257
$973,219
2022
$11,814 (+2.6%)
$236,413 + $699,022
$935,435
2021
$11,515 (+2.3%)
$236,413 + $699,022
$935,435
2020
$11,253 (−1.8%)
$231,778 + $685,318
$917,096
2019
$11,464 (+2.9%)
$229,402 + $678,293
$907,695
2018
$11,141 (+2.7%)
$224,906 + $664,998
$889,904
2017
$10,849 (+5.1%)
$216,176 + $639,185
$855,361
2016
$10,323 (+7.0%)
$216,176 + $639,185
$855,361
2015
$9,648 (+1.1%)
$211,939 + $626,656
$838,595
2014
$9,547 (+11.9%)
$204,669 + $605,159
$809,828
2013
$8,534 (+0.9%)
$204,669 + $605,159
$809,828
2012
$8,458 (−1.2%)
$216,300 + $504,700
$721,000
2011
$8,560 (+6.6%)
$214,500 + $500,500
$715,000
2010
$8,031 (−4.9%)
$216,000 + $504,000
$720,000
2009
$8,441 (+10.7%)
$199,800 + $466,200
$666,000
2008
$7,625
$210,000 + $490,000
$700,000
*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
4
Stories
1
Lot width
—
Lot depth
—
Lot size
0.32 Acres
Year renovated
1974
Sq. Ft.
2,847
Year built
1935
Style
Single Family Residential
County
Alameda County
APN
084D115502407
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 27, 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 10, 2007 • Final
Building
Install an additional bathroom in an existing storage area.
Addition
Bathroom
May 30, 2007 • Final
Building
Renew a permit for a two-story addition and remodel of a single-family home. Construct a front addition featuring a three-car garage with storage and a second level containing bedrooms, bathrooms, a covered porch, and an expanded living room. Extend the side of the dwelling for a closet, laundry room, and stairs, remodel the existing living area, and reframe the entire roof.
Addition
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
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Detached
Interior
Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 1
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub
Interior Features
Interior Features: Dining Area, Family Room, No Additional Rooms, Laminate Counters
Appliances: Dishwasher, Disposal, Refrigerator, Gas Water Heater
Laundry Features: Laundry Room
Street Level Features: 3 Bedrooms, 1.5 Baths, Laundry Facility
Fireplace Features: Brick, Living Room, Wood Burning
Basement: Crawl Space, Partial
Exterior
Building Information
Construction Materials: Wood Siding
Building Area Total: 1,654
Exterior Features
Exterior Features: Back Yard, Front Yard, Side Yard
Roof: Shingle
Property Information
Living Area: 1654
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1935
Lot Information
Lot Size Square Feet: 13886
Lot Size Area: 0.32
Lot Size Units: Acres
Lot Size Acres: 0.32
Lot Features: Sloped Down
Utilities
Utility Information
Water Source: Public
Sewer: Public Sewer
Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Ceiling Fan(s)
Location
School Information
High School District: Castro Valley (510) 537-3000
Public facts
Beds: 3
Baths: 4.0
Sq. Ft.: 2,847
Stories: 1.0
Lot Size: 0.32 acres
Style: Single Family Residential
Year Built: 1935
Year Renovated: 1974
County: Alameda County
APN: 084D115502407
Home facts updated by county records on Jul 27, 2026
Around this home
Schools
Places
Transit
Chabot Elementary School
Public K-5 • Assigned • 0.4mi
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 late-summer market shows a clear split. While median prices hold near $1.2M, increased inventory gives buyers leverage on older properties. However, immaculate homes still go pending in under 15 days. A strong, clean offer is key!
Strong buyer demand keeps the Castro Valley market moving incredibly fast. With homes frequently selling above their $1.2 million median price, decisive action is essential. To win here, buyers need to submit competitive offers quickly and minimize...
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.