Contra Costa County property record for 431 Gilger Ave, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,426 sqft · built 1926 |
| Lot Size | 0.083 acres (3,600 sqft) |
| Owner | Individual Name on File |
| Last Sale | $720,000 (Oct 2024) |
| Tax Bill | $9,410 (2025) |
| Deeds & Mortgages | Jul 2023 Sale & Mortgage Feb 2021 Sale |
| Flood Zone | Zone AO (high risk) |
| APN | 370-081-012-4 |
| Primary APN | 370-081-012-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 1,426 sqft Living Area |
| 1st Floor Area | 797 sqft |
| 2nd Floor Area | 629 sqft |
| Year Built | Built 1926 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 3,600 sqft (0.083 acres) |
| Garage Type | Attached |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 431 GILGER AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3766 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | MUIR MANOR POR 17 |
| Legal Subdivision | MUIR MANOR |
| Legal Lot Number | 17 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3013 |
| Census Tract | 318000 |
431 Gilger Ave is owned and occupied by an individual who bought it in October 2024.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 431 GILGER AVE, MARTINEZ, CA 94553-3766 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Surviving Spouse |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jul 20, 2023 | Grant Deed, Transfer · Conventional Mortgage CMG MORTGAGE INC |
| Feb 4, 2021 | Grant Deed, Transfer OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 22, 2024 · Amount on File |
| Deed Sale | Oct 22, 2024 · Amount on File |
| Prior Sale | Jul 20, 2023 · Amount on File |
| Deed Document Number | 2024106305 |
| Prior Transfer Date | Oct 16, 2024 |
| Prior Transfer Doc | 0000106306 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 20, 2023 |
| Property Address | 431 GILGER AVE, MARTINEZ, CA 94553-3766 |
| Document Number | 0000069436 |
| Map Reference | VOL 1 PG 15 |
| Instrument Date | Jul 12, 2023 |
| Instrument | 2023-069436 |
| Transaction Type | Transfer |
| Record Updated | Jul 31, 2023 |
| Title Company | PLACER TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 431 GILGER AVE, MARTINEZ, CA 94553-3766 |
| Document Number | 0000069437 |
|---|---|
| Date | Jul 20, 2023 |
| Instrument | 2023-069437 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Aug 1, 2053 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 4, 2021 |
| Property Address | 431 GILGER AVE, MARTINEZ, CA 94553-3766 |
| Document Number | 0000034934 |
| Map Reference | VOL 1 PG 15 |
| Instrument Date | Feb 3, 2021 |
| Instrument | 2021-034934 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 2828 BONITA AVE, ANTIOCH, CA 94509-5007 |
The 2025 property tax bill for 431 Gilger Ave was $9,410.
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 | $734,400 (+2%) Land $448,800 Building $285,600 | |
| 2025 | $9,410.00 | $720,000 Land $440,000 Building $280,000 |
| 2023 | $6,781.00 (+13.09%) | $512,574 Land $348,534 Building $164,040 |
| 2022 | $5,996.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 431 Gilger Ave in Zone AO, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AO high risk · sheet flow 1–3 ft |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on File median of 109 policies |
| Nearby Flood Policies | 109 in force |
| Nearby Flood Claims | 32 (1980–2019) |
| Claims Outside the SFHA | 3 of 32 |
| Most Recent Claim | Feb 2019 |
| 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.
Wildfire risk around 431 Gilger Ave is moderate, ranking above 59% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 59% of the US · lower than 64% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 335 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
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