121 Williams St, San Leandro, CA 94577 Property Records

Alameda County property record for 121 Williams St, San Leandro, CA 94577

Property Summary

Property TypeSingle Family Home
Details2 bd · 1 ba · 1,426 sqft · built 1939
Lot Size0.172 acres (7,500 sqft)
Owner2 Owner Names on Record
Last Sale$221,000 (Oct 1999)
Tax Bill$5,097 (2025)
Flood ZoneZone X (minimal risk)
APN77-550-27

Property Details

APN / Parcel Number

Primary APN77-550-27
Alternative APN
  • 077-0550-027-00

Interior

Bedrooms2 Beds
Full Baths1 Bath
Total Rooms5 Rooms
Stories1 Story
Building Area1,426 sqft Living Area

Exterior

Year BuiltBuilt 1939
Effective Year BuiltEffective 1940
Architectural StyleOther
Construction TypeWood
Lot Area7,500 sqft (0.172 acres)

Location & Zoning

Street Address121 WILLIAMS ST
CitySAN LEANDRO
StateCA
Zip94577-5832
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionBLK:C SUBD:OVIATTS SUBDIVISION OF BLOCKS #2&3
Legal SubdivisionOVIATTS SUBDIVISION OF BLOCKS #2&3
Legal BlockC
JurisdictionALAMEDA CA
Township / Civil DivisionHAYWARD
Census Block Group2
Census Block2005
Census Tract432601

Owner

Source: Alameda County records, as of October 20, 2025

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Owner Names on Record
Mailing Address121 WILLIAMS ST, SAN LEANDRO, CA 94577-5832
OccupancyOwner Occupied

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleOct 14, 1999 · Amount on Record
Deed SaleOct 14, 1999 · Amount on Record
Prior SaleOct 14, 1999 · Amount on Record
Deed Document Number0000387480
Deed Book / Page077
Last Transfer DateMay 9, 2002
Transfer Doc0000207486
Record UpdatedJun 8, 2026

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of July 1, 2025

Property Jurisdictions

TypeName
StateCalifornia
CountyAlameda County
MunicipalitySan Leandro City
Unified School DistrictSan Leandro Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2025$5,097.00 (+5.38%) Homeowner's exemption$339,651 (+4.04%) Land $101,895 Building $237,756
2023$4,837.00 Homeowner's exemption$326,464 Land $97,939 Building $228,525

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

Source: FEMA National Flood Hazard Layer, effective May 25, 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 99.1% of the US · lower than 99.2% of California
Wildfire LikelihoodUnder 0.01% annual chance
ExposureNone
beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemEAST BAY MUD
serves 1,468,000 people · EPA ID CA0110005
Water SourceSurface water
Last State InspectionDec 2021
LeadUnder 1 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 792 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Sonic Telecom
Fiber
10,000 / 10,000
AT&T
Fiber · Fixed Wireless, DSL in parts of the area
5,000 / 5,000
Xfinity
Cable
2,000 / 250
Unwired
Fixed Wireless
300 / 25
Starlink
Satellite
280 / 30

May also be available: GeoLinks, T-Mobile, Verizon.

Nearby Properties on Williams St

Nearby Streets

Search Property Records by Address or Parcel Number