RARE OPPORTUNITY.... BUILDERS ....LOOK AT THIS PROPERTY.... 20,900 sq.ft. lot county says 5,000 sq.ft. per buildable lot.... 12ft to 20ft drive way. 20 ft. front and rear yard set backs.... Buyer to conduct their oun due diligence regarding zoning. Exsiting house major fixer ..... Bring more than a paint brush....!
Single-familyProperty Type
1946Year Built
0.48 acresLot Size
$926Est. Price/Sq.Ft.
1 car garageParking
Listed by Larry G Smith•DRE #00518977• L & S Properties
Listed by Alma Wallace•DRE #01980815• EXP Realty of California, Inc
bridgeMLS, Bay East AOR, or Contra Costa AOR #41126445
Apr 1, 2026
Sold
$1,100,000
$778/sq ft
Mar 18, 2026
Pending
—
Mar 9, 2026
Listed
$1,299,000
$919/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$1,794 (+3.2%)
$180,811 + $277,923
$458,734
2024
$1,738 (+3.1%)
$45,358 + $39,964
$85,322
2023
$1,686 (+3.3%)
$44,468 + $39,180
$83,648
2022
$1,633 (+3.1%)
$42,742 + $37,659
$80,401
2021
$1,583 (+2.6%)
$42,742 + $37,659
$80,401
2020
$1,543 (−0.9%)
$41,904 + $36,920
$78,824
2019
$1,557 (+3.1%)
$41,474 + $36,542
$78,016
2018
$1,510 (+3.0%)
$40,661 + $35,826
$76,487
2017
$1,466 (+5.3%)
$39,082 + $34,435
$73,517
2016
$1,393 (+7.0%)
$39,082 + $34,435
$73,517
2015
$1,302 (+3.5%)
$38,316 + $33,759
$72,075
2014
$1,258 (+2.8%)
$37,001 + $32,601
$69,602
2013
$1,223 (+3.0%)
$37,001 + $32,601
$69,602
2012
$1,187 (+1.7%)
$36,834 + $32,454
$69,288
2011
$1,167 (+1.1%)
$36,112 + $31,817
$67,929
2010
$1,155 (+0.7%)
$35,404 + $31,194
$66,598
2009
$1,147 (+7.3%)
$35,139 + $30,961
$66,100
2008
$1,070
$35,223 + $31,034
$66,257
Tax history for 18320 Pepper St
Year
Property tax
Land + Additions
Assessment*
2025
$1,794 (+3.2%)
$180,811 + $277,923
$458,734
2024
$1,738 (+3.1%)
$45,358 + $39,964
$85,322
2023
$1,686 (+3.3%)
$44,468 + $39,180
$83,648
2022
$1,633 (+3.1%)
$42,742 + $37,659
$80,401
2021
$1,583 (+2.6%)
$42,742 + $37,659
$80,401
2020
$1,543 (−0.9%)
$41,904 + $36,920
$78,824
2019
$1,557 (+3.1%)
$41,474 + $36,542
$78,016
2018
$1,510 (+3.0%)
$40,661 + $35,826
$76,487
2017
$1,466 (+5.3%)
$39,082 + $34,435
$73,517
2016
$1,393 (+7.0%)
$39,082 + $34,435
$73,517
2015
$1,302 (+3.5%)
$38,316 + $33,759
$72,075
2014
$1,258 (+2.8%)
$37,001 + $32,601
$69,602
2013
$1,223 (+3.0%)
$37,001 + $32,601
$69,602
2012
$1,187 (+1.7%)
$36,834 + $32,454
$69,288
2011
$1,167 (+1.1%)
$36,112 + $31,817
$67,929
2010
$1,155 (+0.7%)
$35,404 + $31,194
$66,598
2009
$1,147 (+7.3%)
$35,139 + $30,961
$66,100
2008
$1,070
$35,223 + $31,034
$66,257
*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
Beds
4
Baths
2
Stories
1
Lot width
—
Lot depth
—
Lot size
0.5 Acres
Year renovated
1949
Sq. Ft.
1,414
Year built
1946
Style
Single Family Residential
County
Alameda County
APN
084C090503500
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
Property details
Parking
Parking Information
Garage Spaces: 1
Covered Spaces: 1
Parking Features: Attached
Interior
Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Interior Features
Interior Features: No Additional Rooms
Street Level Features: 4 Bedrooms
Flooring: Hardwood
Room Information
Kitchen Features: Laminate Counters
Rooms Total: 6
Room Type: No Additional Rooms
Exterior
Building Information
Building Area Total: 1,414
Exterior Features
Exterior Features: Back Yard
Roof: Shingle
Property Information
Living Area: 1414
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1946
Lot Information
Lot Size Square Feet: 20900
Lot Size Area: 0.5
Lot Size Units: Acres
Lot Size Acres: 0.5
Lot Features: 2 Houses / 1 Lot
Utilities
Heating & Cooling
Has Heating
Heating: Floor Furnace
Cooling: Central Air
Public facts
Beds: 4
Baths: 2.0
Sq. Ft.: 1,414
Stories: 1.0
Lot Size: 0.5 acres
Style: Single Family Residential
Year Built: 1946
Year Renovated: 1949
County: Alameda County
APN: 084C090503500
Home facts updated by county records on Sep 17, 2026
Around this home
Schools
Proctor Elementary School
Public K-5 • Assigned • 0.4mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 1.0mi
10/10
Castro Valley High School
Public 9-12 • Assigned • 0.6mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Castro Valley remains a highly competitive market. On average, homes are selling for 103.7% of their asking price, with nearly 60% of properties closing above list price.
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 2026. This data may not match public records. Learn more.