520 Isabel Dr, Martinez, CA 94553 Property Records

Contra Costa County property record for 520 Isabel Dr, Martinez, CA 94553 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,264 sqft · built 1986
Lot Size	0.131 acres (5,720 sqft)
Owner	Company Name on File
Tax Bill	$5,313 (2025)
Deeds & Mortgages	Jan 2018 Line of Credit Oct 2017 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`155-450-016-3`

Property Details

APN / Parcel Number

Primary APN	`155-450-016-3`
Alternative APN	`155-450-016`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,264 sqft Living Area
Gross Area	2,726 sqft
1st Floor Area	1,382 sqft
2nd Floor Area	882 sqft

Exterior

Year Built	Built 1986
Effective Year Built	Effective 1987
Lot Area	5,720 sqft (0.131 acres)
Garage Type	Attached
Garage Area	462 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	520 ISABEL DR
City	MARTINEZ
State	CA
Zip	94553-6615
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T05127 L0065 B
Legal Subdivision	SUBDIVISION 5127
Legal Tract	05127
Legal Lot Number	65
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	2
Census Block	2001
Census Tract	321102

Owner

Source: Contra Costa County records · APN 155-450-016-3

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	Company Name on File
Mailing Address	520 ISABEL DR, MARTINEZ, CA 94553-6615
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jan 24, 2018	Deed of Trust, Mortgage · Line of Credit CHEVRON FCU
Oct 06, 2017	Deed of Trust, Mortgage · Conventional Mortgage CHEVRON FCU
Oct 21, 2020	Deed of Trust, Mortgage · Commercial Mortgage CHEVRON FCU

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Transfer Date	Nov 03, 2015
Transfer Doc	0000235732
Record Updated	Sep 20, 2026

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	520 ISABEL DR, MARTINEZ, CA 94553-6615
Transaction Type	Mortgage
Record Updated	Nov 03, 2022
Title Company	FIRST AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000011077
Date	Jan 24, 2018
Instrument	2018-011077

Lender

Name	CHEVRON FCU
Type	Credit Union

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	301 Months
Due	Feb 04, 2043

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

October 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	520 ISABEL DR, MARTINEZ, CA 94553-6615
Transaction Type	Mortgage
Record Updated	Nov 03, 2022
Title Company	NORTH AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000183686
Date	Oct 06, 2017
Instrument	2017-183686

Lender

Name	CHEVRON FCU
Type	Credit Union
Address	OAKLAND, CA 94607

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	121 Months
Due	Nov 01, 2027

October 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	520 ISABEL DR, MARTINEZ, CA 94553-6615
Transaction Type	Mortgage
Record Updated	Nov 03, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	520 ISABEL DR, MARTINEZ, CA 94553-6615

Mortgage

Document Number	0000244917
Date	Oct 21, 2020
Instrument	2020-244917

Lender

Name	CHEVRON FCU
Type	Credit Union
Address	OAKLAND, CA 94607

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded
Term	301 Months
Due	Nov 04, 2045

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	Mount Diablo 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		$403,559 (+2%) Land $99,554 Building $304,005
2025	$5,313.00 (+4.32%) Homeowner's exemption	$395,647 (+4.04%) Land $97,602 Building $298,045
2023	$5,093.00 (+0.87%) Homeowner's exemption	$380,285 Land $93,813 Building $286,472
2022	$5,049.00

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 060133211022, 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
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Community Rating System	Class 9 (5% premium discount)
Nearby Flood Policies	1 in force
Nearby Flood Claims	3 (1983–2018)
Claims Outside the SFHA	2 of 3
Most Recent Claim	Nov 2018, rainfall accumulation

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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 · Published October 2026 · based on 368 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
Xfinity	Cable	2,000 / 250
Unwired	Fixed Wireless	300 / 25
T-Mobile USA	Fixed Wireless	100 / 20
AT&T	DSL	100 / 20

May also be available at this address: Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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