Fabulous Castro Valley hills home overflowing with saucy character! Do not miss this 2 story, split level house! Upstairs boasts 4 bedrooms/2 bath, upgraded kitchen with granite countertops, fireplace in living room. Balcony off the living room for your sunset viewing pleasure. Master bathroom is eye catching with an Italian look. Jetted spa tub and the shower is also a sauna. French doors lead from the master bedroom to an outside balcony. Full living quarters downstairs and a large bonus room is connected to the oversized garage. Do not miss this one of a kind house, it's going to go fast! Sale subject to owner finding a replacement property in the Valley. Possible rent back needed.
Single-familyProperty Type
1976Year Built
0.3 acresLot Size
$516Est. Price/Sq.Ft.
2 car garageParking
Bought with Leslie Peterson•DRE #01452724• RE/MAX Accord
bridgeMLS, Bay East AOR, or Contra Costa AOR #40818206
May 16, 2018
Sold
$1,080,000
$334/sq ft
Apr 23, 2018
Pending
—
Apr 19, 2018
Listed
$1,000,000
$310/sq ft
Public Records
Jul 3, 1996
Sold
$269,000
$83/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$15,287 (+2.2%)
$368,650 + $860,184
$1,228,834
2024
$14,957 (+1.5%)
$368,650 + $860,184
$1,228,834
2023
$14,733 (+1.9%)
$361,422 + $843,318
$1,204,740
2022
$14,464 (+2.6%)
$347,389 + $810,575
$1,157,964
2021
$14,100 (+2.3%)
$347,389 + $810,575
$1,157,964
2020
$13,780 (−1.9%)
$340,579 + $794,684
$1,135,263
2019
$14,043 (+162.2%)
$337,089 + $786,542
$1,123,631
2018
$5,356 (+2.7%)
$330,480 + $771,120
$1,101,600
2017
$5,213 (+5.1%)
$113,245 + $272,518
$385,763
2016
$4,959 (+7.0%)
$113,245 + $272,518
$385,763
2015
$4,635 (+1.5%)
$111,025 + $267,176
$378,201
2014
$4,568 (+1.0%)
$107,216 + $258,010
$365,226
2013
$4,524 (+2.2%)
$107,216 + $258,010
$365,226
2012
$4,429 (+1.4%)
$106,732 + $256,844
$363,576
2011
$4,368 (+2.7%)
$104,639 + $251,809
$356,448
2010
$4,251 (−0.3%)
$102,588 + $246,872
$349,460
2009
$4,265 (+3.6%)
$101,821 + $237,583
$339,404
2008
$4,116
$102,063 + $238,148
$340,211
Tax history for 18690 Walnut Rd
Year
Property tax
Land + Additions
Assessment*
2025
$15,287 (+2.2%)
$368,650 + $860,184
$1,228,834
2024
$14,957 (+1.5%)
$368,650 + $860,184
$1,228,834
2023
$14,733 (+1.9%)
$361,422 + $843,318
$1,204,740
2022
$14,464 (+2.6%)
$347,389 + $810,575
$1,157,964
2021
$14,100 (+2.3%)
$347,389 + $810,575
$1,157,964
2020
$13,780 (−1.9%)
$340,579 + $794,684
$1,135,263
2019
$14,043 (+162.2%)
$337,089 + $786,542
$1,123,631
2018
$5,356 (+2.7%)
$330,480 + $771,120
$1,101,600
2017
$5,213 (+5.1%)
$113,245 + $272,518
$385,763
2016
$4,959 (+7.0%)
$113,245 + $272,518
$385,763
2015
$4,635 (+1.5%)
$111,025 + $267,176
$378,201
2014
$4,568 (+1.0%)
$107,216 + $258,010
$365,226
2013
$4,524 (+2.2%)
$107,216 + $258,010
$365,226
2012
$4,429 (+1.4%)
$106,732 + $256,844
$363,576
2011
$4,368 (+2.7%)
$104,639 + $251,809
$356,448
2010
$4,251 (−0.3%)
$102,588 + $246,872
$349,460
2009
$4,265 (+3.6%)
$101,821 + $237,583
$339,404
2008
$4,116
$102,063 + $238,148
$340,211
*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
4
Baths
3
Stories
1.5
Lot width
—
Lot depth
—
Lot size
0.3 Acres
Year renovated
1977
Sq. Ft.
3,229
Year built
1976
Style
Single Family Residential
County
Alameda County
APN
084D116803102
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
Jul 19, 2021 • Final
Building
Install an energy storage system battery and a new electrical load center.
Battery
Electrical
May 15, 2020 • Final
Building
Replace an air conditioner in the same location. The work is a like-for-like replacement.
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 Information
Has Attached Garage
Garage Spaces: 2
Covered Spaces: 2
Parking Features: Attached, Int Access From Garage, Garage Door Opener
Interior
Virtual Tour
Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 3
Other Bathrooms Included Features: Shower Over Tub
Primary Bathroom Included Features: Sauna, Stall Shower, Tub with Jets
Interior Features
Interior Features: In-Law Floorplan, Rec/Rumpus Room, Breakfast Bar, Stone Counters, Pantry, Updated Kitchen, Central Vacuum
Appliances: Dishwasher, Gas Range, Grill Built-In, Plumbed For Ice Maker, Microwave, Oven, Range, Refrigerator, Trash Compactor, Gas Water Heater
Laundry Features: 220 Volt Outlet, Dryer, Laundry Closet
Home facts updated by county records on Jul 27, 2026
Around this home
Schools
Chabot Elementary School
Public K-5 • Assigned • 0.5mi
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
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 2018. This data may not match public records. Learn more.