427 Lassen Dr, Martinez, CA 94553 Property Records

Contra Costa County property record for 427 Lassen Dr, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	2 bd · 2 ba · 1,227 sqft · built 1964
Lot Size	0.16 acres (6,976 sqft)
Owner	Individual Name on File
Last Sale	$605,000 (Aug 2018)
Tax Bill	$8,444 (2025)
Deeds & Mortgages	Dec 2019 Mortgage Aug 2020 Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`155-193-023-1`

Property Details

APN / Parcel Number

Primary APN	`155-193-023-1`
Alternative APN	`155-193-023`

Interior

Bedrooms	2 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,227 sqft Living Area
1st Floor Area	1,227 sqft

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1980
Lot Area	6,976 sqft (0.16 acres)
Garage Type	Attached
Garage Area	410 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	427 LASSEN DR
City	MARTINEZ
State	CA
Zip	94553-4909
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R7 5
Legal Description	TRACT 2194 LOT 40
Legal Subdivision	MUIR MEADOWS
Legal Tract	2194
Legal Lot Number	40
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1012
Census Tract	321101

Owner

427 Lassen Dr is owned and occupied by an individual who bought it in August 2018.

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

Owner of Record	Individual Name on File
Mailing Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Sole Owner

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
Dec 3, 2019	Deed of Trust, Mortgage · Conventional Mortgage FREMONT BANK
Aug 14, 2020	Deed of Trust, Mortgage · Conventional Mortgage FREMONT BANK
Mar 22, 2021	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC
Apr 21, 2022	Deed of Trust, Mortgage · Stand-Alone Second Mortgage PATELCO CU
Aug 13, 2018	Intrafamily Transfer, Transfer · Conventional Mortgage FREMONT BANK
Aug 13, 2018	Grant Deed, Transfer FIDELITY NATIONAL TITLE COMP

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 13, 2018 · Amount on File
Deed Sale	Aug 13, 2018 · Amount on File
Prior Sale	Sep 28, 2012 · Amount on File
Deed Document Number	2018128732
Prior Transfer Date	Aug 6, 2018
Prior Transfer Doc	0000128733
Record Updated	Oct 29, 2026

December 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000215931
Date	Dec 3, 2019
Instrument	2019-215931

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 1, 2049

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000171110
Date	Aug 14, 2020
Instrument	2020-171110

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Sep 1, 2050

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMROCK TITLE CALIFORNIA

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 LASSEN DR, MARTINEZ, CA 94553-4909

Mortgage

Document Number	0000085533
Date	Mar 22, 2021
Instrument	2021-085533

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Mar 1, 2051

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	ACCOMMODATION

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 LASSEN DR, BRIONES, CA 94553-4909

Mortgage

Document Number	0000069467
Date	Apr 21, 2022
Instrument	2022-069467

Lender

Name	PATELCO CU
Type	Credit Union
Address	DUBLIN, CA 94568

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount on Record
Term	121 Months
Due	May 1, 2032

August 2018: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 13, 2018
Property Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Document Number	0000128733
Map Reference	MB 97 PG 40
Instrument Date	Aug 6, 2018
Instrument	2018-128733
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE COMP

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	427 LASSEN DR, MARTINEZ, CA 94553-4909

Mortgage

Document Number	0000128734
Date	Aug 13, 2018
Instrument	2018-128734

Lender

Name	FREMONT BANK
Type	Bank

Agreement

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

Mortgage

Document Number	0000128734
Date	Aug 13, 2018
Instrument	2018-128734

Lender

Name	FREMONT BANK
Type	Bank
Address	LIVERMORE, CA 94551

Agreement

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

August 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Aug 13, 2018
Property Address	427 LASSEN DR, MARTINEZ, CA 94553-4909
Document Number	0000128732
Map Reference	MB 97 PG 40
Instrument Date	Aug 2, 2018
Instrument	2018-128732
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TITLE COMP

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
Address	427 LASSEN DR, MARTINEZ, CA 94553-4909

Tax Assessment & Valuation

The 2025 property tax bill for 427 Lassen Dr was $8,444 with a homeowner's exemption.

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	Mount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$688,381 (+2%) Land $477,885 Building $210,496
2025	$8,444.00 Homeowner's exemption	$674,884 Land $468,515 Building $206,369
2023	$8,109.00 (+0.85%) Homeowner's exemption	$648,679 Land $450,323 Building $198,356
2022	$8,041.00

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

Flood

FEMA maps place 427 Lassen Dr in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1995.

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 (1995)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Jan 1995 · Severe Winter Storms, Flooding, Landslides, Mud Flows

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

The area around 427 Lassen Dr has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire Risk	Not rated no burnable land within 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 688 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
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Verizon.

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