4130 S Castro St, Martinez, CA 94553 Property Records

Contra Costa County property record for 4130 S Castro St, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,890 sqft · built 1947
Lot Size	0.25 acres (10,890 sqft)
Owner	Company Name on Record
Tax Bill	$3,821 (2025)
Deeds & Mortgages	Apr 2017 Transfer
Flood Zone	Zone AO (high risk)
APN	`370-293-002-9`

Property Details

APN / Parcel Number

Primary APN	`370-293-002-9`
Alternative APN	`370-293-002`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,890 sqft Living Area
1st Floor Area	1,414 sqft
Basement Area	476 sqft

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1947
Lot Area	10,890 sqft (0.25 acres)
Garage Type	Attached
Garage Area	686 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	4130 S CASTRO ST
City	MARTINEZ
State	CA
Zip	94553-3950
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	POR RO EL PINOLE
Legal Subdivision	EL PINOLE RHO
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	3
Census Block	3017
Census Tract	318000

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	Company Name on Record
Mailing Address	224 WARD ST, MARTINEZ, CA 94553-1552
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Mar 30, 2017
Transfer Doc	0000058314
Record Updated	Sep 20, 2026

April 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 4, 2017
Property Address	4130 S CASTRO ST, MARTINEZ, CA 94553-3950
Document Number	0000058314
Instrument Date	Mar 30, 2017
Instrument	58314
Transaction Type	Transfer
Record Updated	Apr 12, 2017
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	224 WARD ST MARTINEZ CA 945531552, MARTINEZ, CA 94553-1552

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		$247,913 (+2%) Land $93,696 Building $154,217
2025	$3,821.00 (+6.43%)	$243,053 (+4.04%) Land $91,859 Building $151,194
2023	$3,590.00 (+1.5%)	$233,617 Land $88,293 Building $145,324
2022	$3,537.00

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 AO high risk · sheet flow 1–3 ft
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	Varies along the reach; see FIRM
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on Record median of 109 policies
Nearby Flood Policies	109 in force
Nearby Flood Claims	32 (1980–2019)
Claims Outside the SFHA	3 of 32
Most Recent Claim	Feb 2019
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 12 claims Severe Storms, Flooding, Mud And Landslides, Jan 1997 · 5 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 6 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

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

Wildfire Risk	Moderate above 43% of the US · lower than 74% of California
Wildfire Likelihood	0.07% 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 212 locations within half a mile, as of December 31, 2025

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

May also be available: Astound Broadband, T-Mobile, Unwired, Verizon.

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