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  5. Lassen St

5809 Lassen St, El Cerrito, CA 94530 Property Records

Contra Costa County property record for 5809 Lassen St, El Cerrito, CA 94530

Property Summary

Property TypeDuplex
Details7 bd · 5 ba · 3,498 sqft · built 2015
Lot Size0.121 acres (5,270 sqft)
Owner2 Individual Names on Record
Last Sale$730,000 (Nov 2005)
Tax Bill$11,104 (2025)
Deeds & MortgagesNov 2020 Mortgage
Flood ZoneZone AE (high risk)
APN510-027-021-3

Property Details

APN / Parcel Number

Primary APN510-027-021-3
Alternative APN
  • 510-027-021

Interior

Bedrooms7 Beds
Full Baths5 Baths
Total Rooms14 Rooms
Stories2 Stories
Building Area3,498 sqft Living Area
1st Floor Area1,560 sqft
2nd Floor Area1,938 sqft

Exterior

Year BuiltBuilt 2015
Effective Year BuiltEffective 2017
Architectural StyleDuplex Single
Lot Area5,270 sqft (0.121 acres)
Garage TypeAttached
Garage Area410 sqft
Parking Spaces2 Parking Spaces

Location & Zoning

Street Address5809 LASSEN ST
CityEL CERRITO
StateCA
Zip94530-3812
Property CategoryResidential
Property TypeResidential > Multi-Unit > Duplex
Legal DescriptionT200PM4 PCL 2
Legal SubdivisionRICHMOND ANX ADD
Legal Tract200PM4
JurisdictionCONTRA COSTA CA
Township / Civil DivisionWEST CONTRA COSTA
Census Block Group2
Census Block2009
Census Tract389200

Owner

Source: Contra Costa County records, as of July 14, 2026

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

Owner of Record2 Individual Names on Record
Mailing Address5809 LASSEN ST, EL CERRITO, CA 94530-3812
OccupancyOwner Occupied
Owner TypeIndividual
VestingCommunity Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleNov 15, 2005 · Amount on Record
Deed SaleNov 15, 2005 · Amount on Record
Prior SaleDec 1, 1995 · Amount on Record
Deed Document Number2005441380
Last Transfer DateNov 6, 2020
Transfer Doc0000272712
Record UpdatedSep 20, 2026

November 2020: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateNov 13, 2020
Property Address5809 LASSEN ST, EL CERRITO, CA 94530-3812
Document Number0000272712
Map ReferenceMB 8 PG 182
Instrument DateNov 6, 2020
Instrument2020-272712
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyFIDELITY NATIONAL TITLE CO

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCommunity Property with Right of Survivorship
Address5809 LASSEN ST, EL CERRITO, CA 94530-3812

Mortgage

Document Number0000272713
DateNov 13, 2020
Instrument2020-272713
Lender
NameJMAC LENDING INC
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term181 Months
DueDec 1, 2035

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityEl Cerrito City
Unified School DistrictWest Contra Costa Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$739,882 (+2%) Land $156,274 Building $583,608
2025$11,104.00 (+4.15%) Homeowner's exemption$725,375 (+4.04%) Land $153,210 Building $572,165
2023$10,662.00 (+1.59%) Homeowner's exemption$697,210 Land $147,261 Building $549,949
2022$10,495.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone AE
high risk
100-Year FloodplainYes
1% annual chance
FloodwayNo
Base Flood ElevationVaries along the reach; see FIRM
Flood Insurance RequirementRequired
federally backed loans
Flood Insurance CostPremium on Record
median of 29 policies
Nearby Flood Policies29 in force
Nearby Flood Claims16 (1982–2026)
Most Recent ClaimJan 2026 · river or lake flooding

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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

Wildfire RiskNot rated
no burnable land within 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 347 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Sonic Telecom
Fiber		10,000 / 10,000
AT&T
Fiber · DSL in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: Etheric Networks, GeoLinks.

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