Contra Costa County property record for 433 Lassen Dr, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,227 sqft · built 1964 |
| Lot Size | 0.157 acres (6,820 sqft) |
| Owner | Individual Name on File |
| Last Sale | $452,500 (May 2014) |
| Tax Bill | $7,098 (2025) |
| Deeds & Mortgages | Mar 2026 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 155-193-024-9 |
| Primary APN | 155-193-024-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,227 sqft Living Area |
| Gross Area | 1,637 sqft |
| 1st Floor Area | 1,227 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 6,820 sqft (0.157 acres) |
| Lot Dimensions | 110 ft deep x 62 ft wide |
| Garage Type | Attached |
| Garage Area | 410 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 433 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 41 |
| Legal Subdivision | MUIR MEADOWS |
| Legal Tract | 2194 |
| Legal Lot Number | 41 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 321101 |
Source: Contra Costa County assessment roll, 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 | Individual Name on File |
|---|---|
| Mailing Address | 433 LASSEN DR, MARTINEZ, CA 94553-4909 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Unmarried Man |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 9, 2014 · Amount on Record |
| Deed Sale | May 9, 2014 · Amount on Record |
| Deed Document Number | 201473481 |
| Last Transfer Date | Feb 12, 2026 |
| Transfer Doc | 0000021014 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 3, 2026 |
| Property Address | 433 LASSEN DR, MARTINEZ, CA 94553-4909 |
| Document Number | 0000021014 |
| Map Reference | MB 97 PG 40 |
| Instrument Date | Feb 12, 2026 |
| Instrument | 2026- 021014 |
| Transaction Type | Transfer |
| Record Updated | Mar 12, 2026 |
| Title Company | FNTG LENDERS DIRECT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 433 LASSEN DR, MARTINEZ, CA 94553-4909 |
| Document Number | 0000021015 |
|---|---|
| Date | Mar 3, 2026 |
| Instrument | 2026- 021015 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Change Frequency | Monthly |
|---|
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $565,785 (+2%) Land $375,109 Building $190,676 | |
| 2025 | $7,098.00 (+4.2%) Homeowner's exemption | $554,692 (+4.04%) Land $367,754 Building $186,938 |
| 2023 | $6,812.00 (+0.86%) Homeowner's exemption | $533,155 Land $353,475 Building $179,680 |
| 2022 | $6,754.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 |
| 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.
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 |
| Radiate Holdings Fiber · Cable in parts of the area | 1,500 / 1,500 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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