Great property for a gardener with a greenhouse in the backyard. Lovely hillside location on Upper Walnut with side access and room for an RV, boat or whatever. Upstairs has 3 bed and 2 bath while downstairs has game room, possible office and full bath. Kitchen has gas range and double oven as well as refrigerator that stays. Large bedrooms. Garage with work benches and storage.
Single-familyProperty Type
1955Year Built
0.27 acresLot Size
$731Est. Price/Sq.Ft.
2 car garageParking
Listed by Craig Ragg•DRE #00589950• Craig Ragg Rl Est Broker
Bought with Monica Benham•DRE #01303224• Keller Williams Realty
Two story home with the lower level being an entryway to the garage as well as a potential bedroom with large closet or another bedroom. As the space is fairly large.
7 years ago• May not reflect the current state of the home
bridgeMLS, Bay East AOR, or Contra Costa AOR #40872356
Aug 1, 2019
Sold
$855,000
$446/sq ft
Jul 3, 2019
Pending
—
Jun 28, 2019
Listed
$895,000
$466/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$11,858 (+2.2%)
$280,516 + $657,721
$938,237
2024
$11,598 (+1.6%)
$280,516 + $657,721
$938,237
2023
$11,418 (+1.9%)
$275,016 + $644,826
$919,842
2022
$11,203 (+2.9%)
$264,338 + $619,790
$884,128
2021
$10,884 (+2.3%)
$264,338 + $619,790
$884,128
2020
$10,636 (+481.3%)
$259,157 + $604,700
$863,857
2019
$1,830 (+3.1%)
$256,500 + $598,500
$855,000
2018
$1,775 (+2.9%)
$43,299 + $55,607
$98,906
2017
$1,725 (+5.2%)
$41,617 + $53,448
$95,065
2016
$1,639 (+7.0%)
$41,617 + $53,448
$95,065
2015
$1,532 (+3.1%)
$40,801 + $52,400
$93,201
2014
$1,486 (+2.4%)
$39,401 + $50,602
$90,003
2013
$1,451 (+2.9%)
$39,401 + $50,602
$90,003
2012
$1,410 (+1.6%)
$39,223 + $50,373
$89,596
2011
$1,388 (+1.0%)
$38,454 + $49,386
$87,840
2010
$1,374 (+0.5%)
$37,700 + $48,417
$86,117
2009
$1,368 (+6.4%)
$37,419 + $48,056
$85,475
2008
$1,285
$37,508 + $48,170
$85,678
Tax history for 18129 Walnut Rd
Year
Property tax
Land + Additions
Assessment*
2025
$11,858 (+2.2%)
$280,516 + $657,721
$938,237
2024
$11,598 (+1.6%)
$280,516 + $657,721
$938,237
2023
$11,418 (+1.9%)
$275,016 + $644,826
$919,842
2022
$11,203 (+2.9%)
$264,338 + $619,790
$884,128
2021
$10,884 (+2.3%)
$264,338 + $619,790
$884,128
2020
$10,636 (+481.3%)
$259,157 + $604,700
$863,857
2019
$1,830 (+3.1%)
$256,500 + $598,500
$855,000
2018
$1,775 (+2.9%)
$43,299 + $55,607
$98,906
2017
$1,725 (+5.2%)
$41,617 + $53,448
$95,065
2016
$1,639 (+7.0%)
$41,617 + $53,448
$95,065
2015
$1,532 (+3.1%)
$40,801 + $52,400
$93,201
2014
$1,486 (+2.4%)
$39,401 + $50,602
$90,003
2013
$1,451 (+2.9%)
$39,401 + $50,602
$90,003
2012
$1,410 (+1.6%)
$39,223 + $50,373
$89,596
2011
$1,388 (+1.0%)
$38,454 + $49,386
$87,840
2010
$1,374 (+0.5%)
$37,700 + $48,417
$86,117
2009
$1,368 (+6.4%)
$37,419 + $48,056
$85,475
2008
$1,285
$37,508 + $48,170
$85,678
*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
3
Stories
1
Lot width
—
Lot depth
—
Lot size
0.27 Acres
Year renovated
1970
Sq. Ft.
1,919
Year built
1955
Style
Single Family Residential
County
Alameda County
APN
084D115800402
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
Sep 30, 2025 • Final
Building
Remodel a master bathroom in a single-family home. The work includes changing the layout, removing an existing closet, and removing non-load bearing walls.
Bathroom
Remodel
Jun 9, 2023 • Final
Building
Perform a kitchen remodel. The work is like-for-like and does not include any structural changes.
Kitchen
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
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Garage Door Opener
Interior
Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 3
Other Bathrooms Included Features: Stall Shower, Tile
Primary Bathroom Included Features: Shower Over Tub, Tile
Kitchen Features: 220 Volt Outlet,Dishwasher,Garbage Disposal,Range/Oven Built-in,Refrigerator
Rooms Total: 6
Fireplace Features: Brick, Living Room
Basement: Crawl Space
Exterior
Building Information
Construction Materials: Stucco
Building Area Total: 1,919
Foundation Details: Raised
Exterior Features
Exterior Features: Back Yard, Garden/Play, Terraced Up
Fencing: Fenced
Property Information
Living Area: 1919
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1955
Lot Information
Lot Size Square Feet: 11760
Lot Size Area: 0.27
Lot Size Units: Acres
Lot Size Acres: 0.27
Lot Features: Premium Lot, Sloped Up
Utilities
Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen
Sewer: Public Sewer
Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas
Location
School Information
High School District: Castro Valley (510) 537-3000
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 1,919
Stories: 1.0
Lot Size: 0.27 acres
Style: Single Family Residential
Year Built: 1955
Year Renovated: 1970
County: Alameda County
APN: 084D115800402
Home facts updated by county records on Jul 27, 2026
Around this home
Schools
Chabot Elementary School
Public K-5 • Assigned • 0.6mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 1.8mi
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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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 2019. This data may not match public records. Learn more.