Contra Costa County property record for 1040 Sierra Ave, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 847 sqft · built 1916 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $480,000 (Sep 2020) |
| Tax Bill | $7,162 (2025) |
| Deeds & Mortgages | Sep 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 375-042-005-5 |
| Primary APN | 375-042-005-5 |
|---|---|
| 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 1916 |
|---|---|
| Effective Year Built | Effective 1942 |
| Architectural Style | Bungalow |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 125 ft deep x 40 ft wide |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1040 SIERRA AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-2840 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | MARTINEZ LAND #6 14 31 |
| Legal Subdivision | MARTINEZ LAND CO 02 |
| Legal Block | 31 |
| Legal Lot Number | 14 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2017 |
| 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 | Individual Name on Record |
|---|---|
| Mailing Address | 1040 SIERRA AVE, MARTINEZ, CA 94553-2840 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 18, 2020 · Amount on Record |
| Deed Sale | Sep 18, 2020 · Amount on Record |
| Prior Sale | Aug 28, 1998 · Amount on Record |
| Deed Document Number | 2020207842 |
| Prior Transfer Date | Aug 26, 1998 |
| Prior Transfer Doc | 0000206978 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 18, 2020 |
| Property Address | 1040 SIERRA AVE, MARTINEZ, CA 94553-2840 |
| Document Number | 0000207842 |
| Map Reference | MB 14 PG 297 |
| Instrument Date | Sep 15, 2020 |
| Instrument | 2020-207842 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CORNERSTONE TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| 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 |
|---|---|
| Address | 1040 SIERRA AVE, MARTINEZ, CA 94553-2840 |
| Document Number | 0000207843 |
|---|---|
| Date | Sep 18, 2020 |
| Instrument | 2020-207843 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 1, 2050 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $529,955 (+2%) Land $353,304 Building $176,651 | |
| 2025 | $7,162.00 (+7.17%) | $519,565 (+4.04%) Land $346,377 Building $173,188 |
| 2023 | $6,683.00 (+2.69%) | $499,392 Land $332,928 Building $166,464 |
| 2022 | $6,508.00 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; 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 765 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Fiber | 1,500 / 1,500 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: T-Mobile, Verizon.
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