1. Home
  2. California
  3. Contra Costa County
  4. Martinez
  5. Castro St

1801 Castro St, Martinez, CA 94553 Property Records

Contra Costa County property record for 1801 Castro St, Martinez, CA 94553

Property Summary

Property TypeDuplex
Details4 bd · 3 ba · 2,194 sqft · built 1918
Lot Size0.115 acres (5,000 sqft)
OwnerIndividual Name on Record
Last Sale$815,000 (Aug 2020)
Tax Bill$11,760 (2025)
Deeds & MortgagesAug 2020 Sale & Mortgage
Flood ZoneZone AO (high risk)
APN372-275-007-6

Property Details

APN / Parcel Number

Primary APN372-275-007-6
Alternative APN
  • 372-275-007

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms10 Rooms
Stories1 Story
Building Area2,194 sqft Living Area
1st Floor Area1,277 sqft
Basement Area917 sqft

Exterior

Year BuiltBuilt 1918
Effective Year BuiltEffective 1980
Architectural StyleBungalow
Exterior MaterialStucco
Roof MaterialComposition Shingle
Lot Area5,000 sqft (0.115 acres)
Lot Dimensions100 ft deep x 50 ft wide
Garage TypeAttached
Garage Area360 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air with A/C
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address1801 CASTRO ST
CityMARTINEZ
StateCA
Zip94553-2530
Property CategoryResidential
Property TypeResidential > Multi-Unit > Duplex
Local Zoning CodeR1
Legal DescriptionORIGINAL SURVEY LOT 4 BLK 73
Legal SubdivisionMARTINEZ
Legal Block73
Legal Lot Number4
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group2
Census Block2026
Census Tract317000

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 RecordIndividual Name on Record
Mailing Address1801 CASTRO ST, MARTINEZ, CA 94553-2530
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last SaleAug 13, 2020 · Amount on Record
Deed SaleAug 13, 2020 · Amount on Record
Prior SaleFeb 25, 2015 · Amount on Record
Deed Document Number2020169228
Record UpdatedOct 29, 2026

August 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateAug 13, 2020
Property Address1801 CASTRO ST, MARTINEZ, CA 94553-2530
Document Number0000169228
Instrument DateJul 8, 2020
Instrument2020-169228
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address1801 CASTRO ST, MARTINEZ, CA 94553-2530

Mortgage

Document Number0000169229
DateAug 13, 2020
Instrument2020-169229
Lender
NameFINANCE OF AMERICA MORTGAGE LLC
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueSep 1, 2050

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityMartinez City
Unified School DistrictMartinez Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$899,822 (+2%) Land $447,151 Building $452,671
2025$11,760.00 (+6.19%)$882,180 (+4.04%) Land $438,384 Building $443,796
2023$11,075.00 (-1.24%)$847,926 Land $421,362 Building $426,564
2022$11,214.00

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 AO
high risk · sheet flow 1–3 ft
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 70 policies
Nearby Flood Policies70 in force
Nearby Flood Claims51 (1980–2018)
Claims Outside the SFHA1 of 51
Most Recent ClaimSep 2018
Claims by Event
  • Severe Winter Storms, Flooding, And Mudslides, Feb 2017 · 6 claims
  • Severe Storms, Flooding, Mudslides, And Landslides, Dec 2005 · 12 claims
  • Severe Storms, Flooding, Mud And Landslides, Jan 1997 · 9 claims

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 RiskModerate
above 48% of the US · lower than 71% of California
Wildfire Likelihood0.1% annual chance
ExposureIndirect
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 SystemCITY OF MARTINEZ
serves 31,015 people · EPA ID CA0710006
Water SourcePurchased surface water from CONTRA COSTA WATER DISTRICT
Last State InspectionOct 2025
LeadUnder 1 ppb (2023–2025)
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 853 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · DSL		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Astound Broadband
Fiber · Cable in parts of the area		1,500 / 1,500
Verizon
Fixed Wireless		300 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: Unwired.

Nearby Properties on Castro St

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures