477 William Way, Martinez, CA 94553 Property Records

Contra Costa County property record for 477 William Way, Martinez, CA 94553 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,815 sqft · built 2023
Lot Size	0.178 acres (7,745 sqft)
Owner	2 Individual Names on File
Last Sale	$1,294,500 (Sep 2023)
Tax Bill	$17,479 (2025)
Deeds & Mortgages	Sep 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`162-580-028-7`

Property Details

APN / Parcel Number

Primary APN	`162-580-028-7`
Alternative APN	`162-580-028`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,815 sqft Living Area
1st Floor Area	1,432 sqft
2nd Floor Area	1,383 sqft

Exterior

Year Built	Built 2023
Effective Year Built	Effective 2023
Lot Area	7,745 sqft (0.178 acres)
Garage Type	Attached
Garage Area	469 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	477 WILLIAM WAY
City	MARTINEZ
State	CA
Zip	94553-4752
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T9358 L28
Legal Subdivision	SUBDIVISION 9358
Legal Tract	9358
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	3
Census Block	3014
Census Tract	321101

Owner

Source: Contra Costa County records · APN 162-580-028-7

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 Record	2 Individual Names on File
Mailing Address	477 WILLIAM WAY, MARTINEZ, CA 94553-4752
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Sep 22, 2023 · Amount on Record
Deed Sale	Sep 22, 2023 · Amount on Record
Deed Document Number	202391839
Record Updated	Sep 20, 2026

September 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Sep 22, 2023
Property Address	477 WILLIAM WAY, MARTINEZ, CA 94553-4752
Document Number	0000091839
Map Reference	MB 548 PG 21
Instrument Date	Aug 16, 2023
Instrument	2023-091839
Transaction Type	Transfer
Record Updated	Oct 03, 2023
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	477 WILLIAM WAY, MARTINEZ, CA 94553-4752

Mortgage

Document Number	0000091840
Date	Sep 22, 2023
Instrument	2023-091840

Lender

Name	CMG MORTGAGE INC
Type	Mortgage Company

Agreement

Type	VA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 01, 2053

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Martinez City
Unified School District	Mount 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.

Year	Tax Bill	Assessed Value
2026		$1,346,485 (+2%) Land $728,488 Building $617,997
2025	$17,479.00 (+220.83%) Disabled Person's exemption Veteran's exemption	$1,320,084 (+512.92%) Land $714,204 Building $605,880
2023	$5,448.00 (+193.85%)	$215,377 Land $215,377
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 Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Flood Insurance Cost	Premium on Record median of 1 individual NFIP policies nearby
Nearby Flood Policies	1 in force 1 of 1 on primary residences

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None 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.