18616 Walnut Rd is a 2,754 square foot house on a 8,605 square foot lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Castro Valley data, we estimate the home's value is $1,384,374.
Single-familyProperty Type
1979Year Built
8,605 sq ftLot Size
$503Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,384,374
$32K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6% lower than the average sale price ($1.47M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
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
Jun 21, 2007 • Final
Building
Replace the decking on a residential building. Replace a structural beam with new pressure treated lumber and replace a dry rotted joist.
Remodel
Sep 15, 2006 • Final
Building
Replace a gas water heater.
Plumbing
Water heater
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
Interior
Heating & Cooling
Heating Fuel Type: Gas
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 7
Exterior
Exterior Information
Foundation Type: Raised W/Crawlspace
Building Style Type: L-Shape
Construction Type: Wood
Building Construction Quality: Good
Exterior Wall: Wood Siding
Building Type: Detached
View Information
View: Good
Property Information
Subdivision Name: CASTRO VLY ORCHARDS
Living Sq. Ft: 2,754
Building Sq. Ft: 2,754
# of Units: 1
# of Stories: 2
Legal Description: LOT 23,24
Parking & Garage Information
# of Parking Spaces: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 8,605
Legal Lot Number: 23,24
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.1975
Zoning Code: R-1
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,754
Stories: 2.0
Lot Size: 8,605 square feet
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1980
County: Alameda County
APN: 084D116803206
Home facts updated by county records on Jul 27, 2026
Around this home
Schools
Places
Transit
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...