321 Jones St, Martinez, CA 94553 Property Records

Contra Costa County property record for 321 Jones St, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,020 sqft · built 1933
Lot Size	0.1 acres (4,356 sqft)
Owner	2 Individual Names on File
Last Sale	$537,500 (May 2024)
Tax Bill	$7,396 (2025)
Deeds & Mortgages	May 2024 Sale & Mortgage Dec 2017 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`372-324-001`

Property Details

APN / Parcel Number

Primary APN	`372-324-001`
Alternative APN	`372-324-001-0`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,020 sqft Living Area
1st Floor Area	1,020 sqft

Exterior

Year Built	Built 1933
Effective Year Built	Effective 1933
Architectural Style	Bungalow
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Composition Shingle
Lot Area	4,356 sqft (0.1 acres)
View / Lot	River
Garage Type	Detached
Garage Area	203 sqft

Utilities, Heating & Cooling

Heating System	Floor/Wall Furnace
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	321 JONES ST
City	MARTINEZ
State	CA
Zip	94553-2420
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	RO EL PINOLE .10 AC
Legal Subdivision	EL PINOLE RHO
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1012
Census Tract	318000

Owner

321 Jones St is owned and occupied by two individuals who bought it in May 2024.

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

Owner of Record	2 Individual Names on File
Mailing Address	321 JONES ST, MARTINEZ, CA 94553-2420
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
May 6, 2024	Grant Deed, Transfer · Conventional Mortgage NEXBANK SSB
Dec 18, 2017	Deed of Trust, Mortgage · Conventional Mortgage PACIFIC SVC EMPS CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 6, 2024 · Amount on File
Deed Sale	May 6, 2024 · Amount on File
Deed Document Number	202442451
Record Updated	Oct 29, 2026

May 2024: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	May 6, 2024
Property Address	321 JONES ST, MARTINEZ, CA 94553-2420
Document Number	0000042451
Instrument Date	May 1, 2024
Instrument	2024-042451
Transaction Type	Transfer
Record Updated	May 15, 2024
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
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	321 JONES ST, MARTINEZ, CA 94553-2420

Mortgage

Document Number	0000042452
Date	May 6, 2024
Instrument	2024-042452

Lender

Name	NEXBANK SSB
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jun 1, 2054

December 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	321 JONES ST, MARTINEZ, CA 94553-2420
Document Number	0000242803
Instrument Date	Dec 18, 2017
Transaction Type	Mortgage
Record Updated	Jan 5, 2018
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	321 JONES ST MARTINEZ CA 945532420, MARTINEZ, CA 94553-2420

Mortgage

Document Number	0000242803
Date	Dec 27, 2017
Instrument	242803

Lender

Name	PACIFIC SVC EMPS CU
Type	Credit Union
Address	CONCORD, CA 94519

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	240 Months
Due	Dec 26, 2037

Tax Assessment & Valuation

The 2025 property tax bill for 321 Jones St was $7,396.

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	Martinez Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$559,215 (+2%) Land $416,160 Building $143,055
2025	$7,396.00	$548,250 Land $408,000 Building $140,250
2023	$2,142.00 (+1.42%) Homeowner's exemption	$114,960 Land $73,824 Building $41,136
2022	$2,112.00

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.

Flood

FEMA maps place 321 Jones St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AO, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 23 policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	23 in force
Nearby Flood Claims	12 (1980–2022)
Claims Outside the SFHA	3 of 12
Most Recent Claim	Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 5 claims Severe Storms, Flooding, Mud And Landslides, Jan 1997 · 2 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

Wildfire risk around 321 Jones St is moderate, ranking above 66% of the US, with a 0.3% annual chance of wildfire.

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

Wildfire Risk	Moderate above 66% of the US · above 41% of California
Wildfire Likelihood	0.3% annual chance
Exposure	Direct burnable vegetation

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 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 348 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
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
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Unwired.

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