308 Potomac Way, Martinez, CA 94553 Property Records

Contra Costa County property record for 308 Potomac Way, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,473 sqft · built 1963
Lot Size	0.203 acres (8,855 sqft)
Owner	2 Individual Names on File
Last Sale	$420,000 (Aug 2011)
Tax Bill	$6,874 (2025)
Deeds & Mortgages	Sep 2021 Line of Credit Oct 2020 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`164-192-015`

Property Details

APN / Parcel Number

Primary APN	`164-192-015`
Alternative APN	`164-192-015-0`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,473 sqft Living Area
1st Floor Area	1,473 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1963
Effective Year Built	Effective 1978
Architectural Style	Ranch
Exterior Material	Wood
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	8,855 sqft (0.203 acres)
Lot Dimensions	115 ft deep x 80 ft wide
Garage Type	Attached
Garage Area	462 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	308 POTOMAC WAY
City	MARTINEZ
State	CA
Zip	94553-6223
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 3000 LOT 96 EX MR
Legal Subdivision	VIRGINIA HILLS 1 SUB 3000
Legal Tract	3000
Legal Lot Number	96
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1003
Census Tract	321103

Owner

Source: Contra Costa County assessment roll, 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 Record	2 Individual Names on File
Mailing Address	PO BOX 86, KUALAPUU, HI 96757-0086
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Sep 28, 2021	Deed of Trust, Mortgage · Line of Credit US BANK NA
Oct 19, 2020	Deed of Trust, Mortgage · Conventional Mortgage OPTIMUM FIRST INC
Mar 2, 2020	Deed of Trust, Mortgage · Conventional Mortgage OPTIMUM FIRST INC

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Aug 26, 2011 · Amount on Record
Deed Sale	Aug 26, 2011 · Amount on Record
Prior Sale	May 28, 1998 · Amount on Record
Deed Document Number	2011174651
Prior Transfer Date	May 21, 1998
Prior Transfer Doc	0000119634
Record Updated	Sep 20, 2026

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	308 POTOMAC WAY, MARTINEZ, CA 94553-6223
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	RADIAN SETTLEMENT SERVICES

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	308 POTOMAC WAY, MARTINEZ, CA 94553-6223

Mortgage

Document Number	0000268592
Date	Sep 28, 2021
Instrument	2021-268592

Lender

Name	US BANK NA
Type	Bank
Address	CINCINNATI, OH 45202

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Sep 17, 2051

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

October 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	308 POTOMAC WAY, MARTINEZ, CA 94553-6223
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	WFG NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	308 POTOMAC WAY, MARTINEZ, CA 94553-6223

Mortgage

Document Number	0000241648
Date	Oct 19, 2020
Instrument	2020-241648

Lender

Name	OPTIMUM FIRST INC
Type	Mortgage Company
Address	FOUNTAIN VALLEY, CA 92708

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Nov 1, 2035

March 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	308 POTOMAC WAY, MARTINEZ, CA 94553-6223
Document Number	0000043650
Instrument Date	Mar 2, 2020
Transaction Type	Mortgage
Record Updated	Mar 18, 2020
Title Company	WFG NATIONAL TITLE COMPANY, WFG NAT'L TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	308 POTOMAC WAY MARTINEZ CA 945536223, MARTINEZ, CA 94553-6223

Mortgage

Document Number	0000043650
Date	Mar 6, 2020
Instrument	43650

Lender

Name	OPTIMUM FIRST INC
Address	FOUNTAIN VALLEY, CA 92708

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	240 Months
Due	Mar 5, 2040

Tax Assessment & Valuation

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

Year	Tax Bill	Assessed Value
2026		$538,080 (+2%) Land $466,085 Building $71,995
2025	$6,874.00 (+5.41%)	$527,531 (+4.04%) Land $456,947 Building $70,584
2023	$6,521.00 (+0.85%) Homeowner's exemption	$507,048 Land $439,204 Building $67,844
2022	$6,466.00

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not 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 Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.03% annual chance
Exposure	Indirect within ember reach

Drinking Water

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

Water System	CITY OF MARTINEZ serves 31,015 people · EPA ID CA0710006
Water Source	Purchased surface water from CONTRA COSTA WATER DISTRICT
Last State Inspection	Oct 2025
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 548 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
AT&T DSL	100 / 20

May also be available: T-Mobile USA.

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