50 Foster St, Martinez, CA 94553 Property Records

Contra Costa County property record for 50 Foster St, Martinez, CA 94553

Property Summary

Property Type	Quadplex
Details	3,312 sqft · built 1975
Lot Size	0.121 acres (5,250 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,065,000 (Jan 2023)
Tax Bill	$16,027 (2025)
Deeds & Mortgages	Jan 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`372-051-016-7`

Property Details

APN / Parcel Number

Primary APN	`372-051-016-7`
Alternative APN	`372-051-016`

Interior

Total Rooms	4 Rooms
Stories	1 Story
Building Area	3,312 sqft Living Area
1st Floor Area	3,312 sqft

Exterior

Year Built	Built 1975
Effective Year Built	Effective 1975
Architectural Style	Quadruplex
Lot Area	5,250 sqft (0.121 acres)
Garage Type	Carport
Carport	Carport
Parking Spaces	4 Parking Spaces

Location & Zoning

Street Address	50 FOSTER ST
City	MARTINEZ
State	CA
Zip	94553-1054
Property Category	Residential
Property Type	Residential > Multi-Unit > Quadplex
Legal Description	ORIG SURVEY MTZ POR LOTS 4 & 9 BLK 6
Legal Subdivision	MARTINEZ
Legal Block	6
Legal Lot Number	4,9
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2009
Census Tract	318000

Owner

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

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

Owner of Record	2 Individual Names on Record
Mailing Address	2011 SCENIC AVE, MARTINEZ, CA 94553-1969
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 4, 2023 · Amount on Record
Deed Sale	Jan 4, 2023 · Amount on Record
Prior Sale	Sep 13, 2013 · Amount on Record
Deed Document Number	2023622
Prior Transfer Date	Jun 30, 2016
Prior Transfer Doc	0000134945
Record Updated	Oct 29, 2026

January 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 4, 2023
Property Address	50 FOSTER ST, MARTINEZ, CA 94553-1054
Document Number	0000000622
Instrument Date	Dec 28, 2022
Instrument	2023-000622
Transaction Type	Transfer
Record Updated	Jan 12, 2023
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

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

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	2011 SCENIC AVE, MARTINEZ, CA 94553-1969

Mortgage

Document Number	0000000623
Date	Jan 4, 2023
Instrument	2023-000623

Lender

Name	CHANGE LENDING LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2053

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	Martinez Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,130,185 (+2%) Land $493,461 Building $636,724
2025	$16,027.00 (+65.38%)	$1,108,026 (+90.17%) Land $483,786 Building $624,240
2023	$9,691.00 (-0.11%)	$582,643 Land $117,822 Building $464,821
2022	$9,702.00

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	3 in force
Nearby Flood Claims	5 (1982–2017)
Claims Outside the SFHA	4 of 5
Most Recent Claim	Jan 2017 · Severe Winter Storms, Flooding, And Mudslides

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	Moderate above 67% of the US · above 42% of California
Wildfire Likelihood	0.2% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 41 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
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20