Contra Costa County property record for 850 Ulfinian Way, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3 ba · 3,013 sqft · built 1977 |
| Lot Size | 0.151 acres (6,580 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $4,048 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 374-176-001-5 |
| Primary APN | 374-176-001-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 12 Rooms |
| Stories | 1 Story |
| Building Area | 3,013 sqft Living Area |
| 1st Floor Area | 1,872 sqft |
| Basement Area | 1,141 sqft |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1979 |
| Lot Area | 6,580 sqft (0.151 acres) |
| Garage Type | Attached |
| Garage Area | 505 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 850 ULFINIAN WAY |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-2764 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LA SALLE HEIGHTS #6 224 |
| Legal Subdivision | LA SALLE HEIGHTS 06 |
| Legal Lot Number | 224 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 319002 |
Source: Contra Costa County records, 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 850 ULFINIAN WAY, MARTINEZ, CA 94553-2764 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Mar 9, 2006 |
| Transfer Doc | 0000080277 |
| Record Updated | Sep 20, 2026 |
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 | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $274,854 (+2%) Land $24,004 Building $250,850 | |
| 2025 | $4,048.00 (+6.55%) Homeowner's exemption | $269,466 (+4.04%) Land $23,534 Building $245,932 |
| 2023 | $3,799.00 (+1.58%) Homeowner's exemption | $259,004 Land $22,621 Building $236,383 |
| 2022 | $3,740.00 |
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 | 2 in force |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
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 853 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Fiber · Cable in parts of the area | 1,500 / 1,500 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Unwired.
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