Contra Costa County property record for 298 Warren St, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 847 sqft · built 1926 |
| Lot Size | 0.066 acres (2,880 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $3,095 (2025) |
| Deeds & Mortgages | Jul 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 372-172-001-3 |
| Primary APN | 372-172-001-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 847 sqft Living Area |
| 1st Floor Area | 847 sqft |
| Year Built | Built 1926 |
|---|---|
| Effective Year Built | Effective 1926 |
| Lot Area | 2,880 sqft (0.066 acres) |
| Garage Type | Attached |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 298 WARREN ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-2433 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | SUNNYSIDE TERRACE 1 1 |
| Legal Subdivision | SUNNYSIDE TERRACE |
| Legal Block | 1 |
| Legal Lot Number | 1 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 318000 |
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 Company Names on Record |
|---|---|
| Mailing Address | 298 WARREN ST, MARTINEZ, CA 94553-2433 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 13, 2013 |
| Deed Sale | Sep 13, 2013 |
| Prior Sale | Apr 1, 1997 · Amount on Record |
| Deed Document Number | 2013224970 |
| Prior Transfer Date | Sep 9, 2013 |
| Prior Transfer Doc | 0000224970 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 298 WARREN ST, MARTINEZ, CA 94553-2433 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | TITLE365 |
| Name | Verified Name |
|---|
| Document Number | 0000158773 |
|---|---|
| Date | Jul 31, 2020 |
| Instrument | 2020-158773 |
| Name | FREEDOM MORTGAGE CORP |
|---|---|
| Type | Subprime Lender |
| Address | MOUNT LAUREL, NJ 08054 |
| Type | VA Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 1, 2050 |
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 | $192,674 (+2%) Land $80,354 Building $112,320 | |
| 2025 | $3,095.00 (+6.54%) Homeowner's exemption | $188,897 (+4.04%) Land $78,779 Building $110,118 |
| 2023 | $2,905.00 (+1.54%) Homeowner's exemption | $181,564 Land $75,721 Building $105,843 |
| 2022 | $2,861.00 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AO, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 23 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 23 in force |
| Nearby Flood Claims | 12 (1980–2022) |
| Claims Outside the SFHA | 3 of 12 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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 | Moderate above 48% of the US · lower than 71% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect within 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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