4828 Northridge Rd, Martinez, CA 94553 Property Records

Contra Costa County property record for 4828 Northridge Rd, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,157 sqft · built 1957
Lot Size	1.65 acres (72,000 sqft)
Owner	2 Individual Names on File
Last Sale	$1,385,000 (Jun 2021)
Tax Bill	$16,664 (2025)
Deeds & Mortgages	Feb 2018 Mortgage Sep 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`162-070-004-5`

Property Details

APN / Parcel Number

Primary APN	`162-070-004-5`
Alternative APN	`162-070-004`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	2,157 sqft Living Area
1st Floor Area	2,157 sqft

Exterior

Year Built	Built 1957
Effective Year Built	Effective 1980
Lot Area	72,000 sqft
Garage Type	Attached
Garage Area	720 sqft
Parking Spaces	3 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4828 NORTHRIDGE RD
City	MARTINEZ
State	CA
Zip	94553-4541
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R40
Legal Description	MUIR OAKS POR LOT 23
Legal Subdivision	FAIR OAKS
Legal Lot Number	23
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	4
Census Block	4000
Census Tract	321101

Owner

4828 Northridge Rd is owned and occupied by two individuals who bought it in June 2021.

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

Owner of Record	2 Individual Names on File
Mailing Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

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
Feb 5, 2018	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Sep 29, 2020	Deed of Trust, Mortgage · Conventional Mortgage NETWORK CAPITAL FUNDING CORP
Jun 18, 2021	Grant Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO
Jan 31, 2019	Deed of Trust, Mortgage · Conventional with PMI UNITED WHOLESALE MTG

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 18, 2021 · Amount on File
Deed Sale	Jun 18, 2021 · Amount on File
Prior Sale	Apr 17, 2012 · Amount on File
Deed Document Number	2021177294
Prior Transfer Date	Jan 8, 2009
Prior Transfer Doc	0000003336
Record Updated	Oct 29, 2026

February 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	LAWYERS TITLE COMPANY SAN DI

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000018220
Date	Feb 5, 2018
Instrument	2018-018220

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	TROY, MI 48083

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Mar 1, 2048

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	UNISOURCE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541

Mortgage

Document Number	0000220285
Date	Sep 29, 2020
Instrument	2020-220285

Lender

Name	NETWORK CAPITAL FUNDING CORP
Type	Mortgage Company
Address	IRVINE, CA 92618

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Sep 1, 2050

June 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 18, 2021
Property Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541
Document Number	0000177294
Map Reference	MB 10 PG 243
Instrument Date	Jun 15, 2021
Instrument	2021-177294
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount 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
Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541

January 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4828 NORTHRIDGE RD, MARTINEZ, CA 94553-4541
Document Number	0000018220
Instrument Date	Jan 31, 2019
Transaction Type	Mortgage
Record Updated	Feb 14, 2019
Title Company	LAWYERS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	4828 NORTHRIDGE RD MARTINEZ CA 945534541, MARTINEZ, CA 94553-4541

Mortgage

Document Number	0000018220
Date	Feb 5, 2019
Instrument	18220

Lender

Name	UNITED WHOLESALE MTG
Type	Mortgage Company
Address	TROY, MI 48083

Agreement

Type	Conventional with PMI
Amount	Amount on Record
Term	360 Months
Due	Feb 4, 2049

Tax Assessment & Valuation

The 2025 property tax bill for 4828 Northridge Rd was $16,664.

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		$1,400,000 (-) Land $803,166 Building $596,834
2025	$16,664.00	$1,400,000 Land $803,166 Building $596,834
2023	$15,712.00 (-4.58%)	$1,350,000 Land $800,000 Building $550,000
2022	$16,467.00

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

Flood

FEMA maps place 4828 Northridge Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1981.

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 (1981)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Nov 1981 · rainfall accumulation

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 4828 Northridge Rd is low, with a 0.05% annual chance of wildfire.

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

Wildfire Risk	Low lower than 62% of the US · lower than 77% of California
Wildfire Likelihood	0.05% annual chance
Exposure	None beyond 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 187 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T DSL	100 / 20

May also be available: Astound Broadband.

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Northridge Rd

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