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553 William Way, Martinez, CA 94553 Property Records

Contra Costa County property record for 553 William Way, Martinez, CA 94553 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details3 bd · 2.5 ba · 2,111 sqft · built 2022
Lot Size0.305 acres (13,280 sqft)
Owner2 Company Names on File
Last Sale$1,285,500 (Sep 2023)
Tax Bill$13,889 (2025)
Deeds & MortgagesMay 2024 Line of Credit
Sep 2023 Sale
Flood ZoneZone X (minimal risk)
APN162-580-044-4

Property Details

APN / Parcel Number

Primary APN162-580-044-4
Alternative APN
  • 162-580-044

Interior

Bedrooms3 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms8 Rooms
Stories1 Story
Building Area2,111 sqft Living Area
1st Floor Area2,111 sqft

Exterior

Year BuiltBuilt 2022
Effective Year BuiltEffective 2022
Lot Area13,280 sqft (0.305 acres)
Garage TypeAttached
Garage Area441 sqft
Parking Spaces2 Parking Spaces

Location & Zoning

Street Address553 WILLIAM WAY
CityMARTINEZ
StateCA
Zip94553-4764
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT9358 L44
Legal SubdivisionTRADITIONS/THE MDW SUB 9358
Legal Tract9358
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group3
Census Block3014
Census Tract321101

Owner

Source: Contra Costa County records · APN 162-580-044-4

Assessment roll updated July 14, 2026 · Last verified July 2026

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

Owner of Record2 Company Names on File
Mailing Address553 WILLIAM WAY, MARTINEZ, CA 94553-4764
OccupancyOwner Occupied
Owner TypeCompany
VestingLife Tenant

Deeds, Mortgages & Sale History

DateDocument
May 13, 2024Deed of Trust, Mortgage · Line of Credit
THE GOLDEN 1 CU
Sep 29, 2023Grant Deed, Transfer
OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleSep 29, 2023 · Amount on Record
Deed SaleSep 29, 2023 · Amount on Record
Deed Document Number202394568
Last Transfer DateFeb 19, 2025
Transfer Doc0000026969
Record UpdatedSep 20, 2026

May 2024: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address553 WILLIAM WAY, MARTINEZ, CA 94553-4764
Transaction TypeMortgage
Record UpdatedMay 22, 2024
Title CompanyE-PLACER TITLE, PLACER TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address553 WILLIAM WAY, MARTINEZ, CA 94553-4764

Mortgage

Document Number0000044646
DateMay 13, 2024
Instrument2024-044646
Lender
NameTHE GOLDEN 1 CU
TypeCredit Union
AddressSACRAMENTO, CA 95826
Agreement
TypeLine of Credit
AmountAmount Recorded
Term361 Months
DueJun 01, 2054
Interest
Rate TypeAdjustable Rate
Change FrequencyMonthly

September 2023: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateSep 29, 2023
Property Address553 WILLIAM WAY, MARTINEZ, CA 94553-4764
Document Number0000094568
Map ReferenceMB 548 PG 21
Instrument DateSep 05, 2023
Instrument2023-094568
Transaction TypeTransfer
Record UpdatedOct 10, 2023
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address553 WILLIAM WAY, MARTINEZ, CA 94553-4764

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

YearTax BillAssessed Value
2026$847,837 (+2%) Land $583,189 Building $264,648
2025$13,889.00 (+40.72%) Homeowner's exemption$831,213 (+37.16%) Land $571,754 Building $259,459
2023$9,870.00 (+432.36%)$606,017 Land $215,397 Building $390,620
2022$1,854.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133211013, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearby Flood Policies1 in force

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 528 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
XfinityCable2,000 / 250
Radiate HoldingsFiber1,500 / 1,500
UnwiredFixed Wireless300 / 25
T-Mobile USAFixed Wireless100 / 20
AT&TDSL100 / 20

May also be available at this address: AT&T, Radiate Holdings. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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