Contra Costa County property record for 414 Warren St, Martinez, CA 94553 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,139 sqft · built 1920 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | Individual Name on File |
| Last Sale | $590,000 (May 2023) |
| Tax Bill | $7,932 (2025) |
| Deeds & Mortgages | May 2023 Sale & Mortgage Sep 2022 Line of Credit |
| Flood Zone | Zone AO (high risk) |
| APN | 372-305-008-8 |
| Primary APN | 372-305-008-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,139 sqft Living Area |
| 1st Floor Area | 1,139 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1948 |
| Lot Area | 5,000 sqft (0.115 acres) |
| Garage Type | Attached |
| Garage Area | 160 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Central |
|---|
| Street Address | 414 WARREN ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-2436 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | ORIG SURVEY LOT 3 BLK 61 |
| Legal Subdivision | MARTINEZ |
| Legal Block | 61 |
| Legal Lot Number | 3 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2020 |
| Census Tract | 317000 |
Source: Contra Costa County records · APN 372-305-008-8
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 | Individual Name on File |
|---|---|
| Mailing Address | 414 WARREN ST, MARTINEZ, CA 94553-2436 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| May 10, 2023 | Grant Deed, Transfer · Conventional Mortgage BANK OF THE WEST |
| Sep 26, 2022 | Deed of Trust, Mortgage · Line of Credit PNC BANK NA |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 10, 2023 · Amount on Record |
| Deed Sale | May 10, 2023 · Amount on Record |
| Prior Sale | Dec 15, 2003 · Amount on Record |
| Deed Document Number | 202343812 |
| Prior Transfer Date | Nov 13, 2003 |
| Prior Transfer Doc | 0000602146 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 10, 2023 |
| Property Address | 414 WARREN ST, MARTINEZ, CA 94553-2436 |
| Document Number | 0000043812 |
| Instrument Date | May 09, 2023 |
| Instrument | 2023-043812 |
| Transaction Type | Transfer |
| Record Updated | May 23, 2023 |
| Title Company | ORANGE COAST TITLE COMPANY/NTHRN CA, ORANGE COAST TTL CO OF NOCAL |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 414 WARREN ST, MARTINEZ, CA 94553-2436 |
| Document Number | 0000043813 |
|---|---|
| Date | May 10, 2023 |
| Instrument | 2023-043813 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 01, 2053 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.37% |
| Type Change Date | Jun 01, 2030 |
| Min Rate At Change | 3% |
| Max Rate At Change | 10.3% |
| Index | Other |
| Margin | 3 |
| Max Rate | 10.3% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 414 WARREN ST, MARTINEZ, CA 94553-2436 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Name | Verified Name |
|---|---|
| Address | 14 WARREN ST, MARTINEZ, CA 94553-2431 |
| Document Number | 0000143622 |
|---|---|
| Date | Sep 26, 2022 |
| Instrument | 2022-143622 |
| Name | PNC BANK NA |
|---|---|
| Type | Bank |
| Address | DAYTON, OH 45401 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 480 Months |
| Due | Sep 12, 2062 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $604,888 (+2%) Land $541,216 Building $63,672 | |
| 2025 | $7,932.00 (+12.72%) | $593,028 (+9.59%) Land $530,604 Building $62,424 |
| 2023 | $7,037.00 (+1.68%) Homeowner's exemption | $541,149 Land $341,639 Building $199,510 |
| 2022 | $6,921.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133170002, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone AO sheet flow 1–3 ft |
|---|---|
| Special Flood Hazard Area | Yes |
| Flood Hazard | High |
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required (federally backed mortgages) |
| Flood Insurance Cost | Premium on Record median of 70 individual NFIP policies nearby |
| Nearby Flood Policies | 70 in force |
| Nearby Flood Claims | 51 (1980–2018) |
| Claims Outside the SFHA | 1 of 51 |
| Most Recent Claim | Sep 2018 |
| Claims By Storm |
|
| Wildfire Risk | Moderate above 49% of the US · above 29% of California |
|---|---|
| Wildfire Likelihood | About 1 in 990 per year |
| Exposure | Indirect within 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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 853 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Radiate Holdings | Fiber | 1,500 / 1,500 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: Unwired, Radiate Holdings. Availability varies by address; speeds are provider-advertised maximums, not measured.
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