2309 Platt Dr, Martinez, CA 94553 Property Records

Contra Costa County property record for 2309 Platt Dr, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,695 sqft · built 1969
Lot Size	0.213 acres (9,280 sqft)
Owner	2 Individual Names on Record
Last Sale	$676,000 (Jan 2018)
Tax Bill	$9,578 (2025)
Deeds & Mortgages	May 2018 Mortgage Sep 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`155-252-003-1`

Property Details

APN / Parcel Number

Primary APN	`155-252-003-1`
Alternative APN	`155-252-003`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,695 sqft Living Area
Gross Area	2,146 sqft
1st Floor Area	1,695 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1969
Effective Year Built	Effective 1980
Architectural Style	Ranch
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Slate
Lot Area	9,280 sqft (0.213 acres)
Garage Type	Attached
Garage Area	451 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	2309 PLATT DR
City	MARTINEZ
State	CA
Zip	94553-5018
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R7 5
Legal Description	TRACT 3645 LOT 106
Legal Subdivision	SUBDIVISION 3645
Legal Tract	3645
Legal Lot Number	106
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1004
Census Tract	321101

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 Record	2 Individual Names on Record
Mailing Address	2309 PLATT DR, MARTINEZ, CA 94553-5018
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
May 3, 2018	Deed of Trust, Mortgage · FHA Mortgage COMMERCE MORTGAGE
Sep 9, 2020	Deed of Trust, Mortgage · FHA Mortgage SECRETARY HOUSING URBAN DEVELOPMENT
Jul 31, 2020	Loan Modification, Mortgage · FHA Mortgage MONEY SOURCE
Jan 30, 2018	Grant Deed, Transfer · FHA Mortgage OLD REPUBLIC TITLE SF

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 30, 2018 · Amount on Record
Deed Sale	Jan 30, 2018 · Amount on Record
Prior Sale	May 1, 1996 · Amount on Record
Deed Document Number	201814241
Prior Transfer Date	May 25, 2005
Prior Transfer Doc	0000199014
Record Updated	Oct 29, 2026

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	2309 PLATT DR, MARTINEZ, CA 94553-5018
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	FIDELITY TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000069077
Date	May 3, 2018
Instrument	2018-069077

Lender

Name	COMMERCE MORTGAGE
Type	Mortgage Company
Address	SAN RAMON, CA 94583

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	360 Months
Due	May 1, 2048

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	2309 PLATT DR, MARTINEZ, CA 94553-5018
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2309 PLATT DR, MARTINEZ, CA 94553-5018

Mortgage

Document Number	0000197553
Date	Sep 9, 2020
Instrument	2020-197553

Lender

Name	SECRETARY HOUSING URBAN DEVELOPMENT
Type	Government Agency
Address	WASHINGTON, DC 20410

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 1, 2050

July 2020: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	CONTRA COSTA CA
Property Address	2309 PLATT DR, MARTINEZ, CA 94553-5018
Document Number	0000197552
Instrument Date	Jul 31, 2020
Transaction Type	Mortgage
Record Updated	Sep 24, 2020
Title Company	ATTORNEY ONLY

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	2309 PLATT DR MARTINEZ CA 945535018, MARTINEZ, CA 94553-5018

Mortgage

Document Number	0000197552
Date	Sep 9, 2020
Instrument	197552

Lender

Name	MONEY SOURCE
Type	Funding / Finance Company

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 8, 2050

Interest

Rate Type	Fixed Rate

January 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 30, 2018
Property Address	2309 PLATT DR, MARTINEZ, CA 94553-5018
Document Number	0000014241
Map Reference	MB 124 PG 16
Instrument Date	Jan 19, 2018
Instrument	2018-014241
Transaction Type	Transfer
Record Updated	Feb 6, 2021
Title Company	OLD REPUBLIC TITLE SF

Transaction

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

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	2309 PLATT DR, MARTINEZ, CA 94553-5018
Investor	Possibly a Property Investor

Mortgage

Document Number	0000014242
Date	Jan 30, 2018
Instrument	2018-014242

Lender

Type	Mortgage Company

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2048

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		$784,549 (+2%) Land $487,442 Building $297,107
2025	$9,578.00 (+4.06%)	$769,167 (+4.04%) Land $477,885 Building $291,282
2023	$9,204.00 (+0.83%)	$739,301 Land $459,329 Building $279,972
2022	$9,128.00

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 Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force
Nearby Flood Claims	1 (1995)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Jan 1995 · Severe Winter Storms, Flooding, Landslides, Mud Flows

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 Risk	Not rated no burnable land 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 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 688 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
Unwired Fixed Wireless	300 / 25
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Verizon.

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