3630 Serrano St, Martinez, CA 94553 Property Records

Contra Costa County property record for 3630 Serrano St, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	3 bd · 1.5 ba · 1,264 sqft · built 1953
Lot Size	0.105 acres (4,550 sqft)
Owner	2 Individual Names on File
Last Sale	$695,000 (Jul 2022)
Tax Bill	$9,382 (2025)
Deeds & Mortgages	Jul 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`370-094-021`

Property Details

APN / Parcel Number

Primary APN	`370-094-021`
Alternative APN	`370-094-021-0`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,264 sqft Living Area
1st Floor Area	1,264 sqft

Exterior

Year Built	Built 1953
Effective Year Built	Effective 1965
Lot Area	4,550 sqft (0.105 acres)
Garage Type	Attached
Garage Area	370 sqft
Parking Spaces	1 Parking Space

Location & Zoning

Street Address	3630 SERRANO ST
City	MARTINEZ
State	CA
Zip	94553-3751
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	ALTA LOMA POR LOTS 40 & 41
Legal Subdivision	ALTA LOMA
Legal Block	6
Legal Lot Number	40,41
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2016
Census Tract	318000

Owner

Source: Contra Costa County records · APN 370-094-021

Assessment roll updated July 14, 2026 · Last verified July 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	3630 SERRANO ST, MARTINEZ, CA 94553-3751
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jul 13, 2022 · Amount on Record
Deed Sale	Jul 13, 2022 · Amount on Record
Prior Sale	Mar 16, 2015 · Amount on Record
Deed Document Number	2022112541
Prior Transfer Date	Sep 21, 2015
Prior Transfer Doc	0000209681
Record Updated	Sep 20, 2026

July 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jul 13, 2022
Property Address	3630 SERRANO ST, MARTINEZ, CA 94553-3751
Document Number	0000112541
Map Reference	MB 22 PG 660
Instrument Date	Jul 08, 2022
Instrument	2022-112541
Transaction Type	Transfer
Record Updated	Nov 03, 2022
Title Company	NOT AVAILABLE, DOMA TITLE OF CALIFORNIA INC

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
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	3630 SERRANO ST, MARTINEZ, CA 94553-3751

Mortgage

Document Number	0000112542
Date	Jul 13, 2022
Instrument	2022-112542

Lender

Name	HOMEBRIDGE FINANCIAL SERVICES INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 01, 2052

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

Assessed value is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2026		$737,539 (+2%) Land $551,828 Building $185,711
2025	$9,382.00 (+5.63%)	$723,078 (+4.04%) Land $541,008 Building $182,070
2023	$8,882.00 (+32.94%)	$695,000 Land $520,000 Building $175,000
2022	$6,681.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133180002, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

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

Wildfire

Wildfire Risk	High above 74% of the US · above 49% of California
Wildfire Likelihood	0.4% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · sampled at 335 locations within half a mile · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Radiate Holdings Fiber · Cable in parts of the area	1,500 / 1,500
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile USA Fixed Wireless	100 / 20
AT&T DSL	100 / 20

Drinking Water

Source: EPA Safe Drinking Water Information System via ECHO, 2026 Q3 · EPA community water system boundaries v3.0, March 2026 · Last verified October 2026

Water System	CITY OF MARTINEZ serves 31,015 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.