Contra Costa County property record for 828 Mariposa Ave, Rodeo, CA 94572
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 1 ba · 512 sqft · built 1939 |
| Lot Size | 0.057 acres (2,500 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $2,610 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 357-191-009-4 |
| Primary APN | 357-191-009-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 3 Rooms |
| Stories | 1 Story |
| Building Area | 512 sqft Living Area |
| Gross Area | 848 sqft |
| 1st Floor Area | 512 sqft |
| Year Built | Built 1939 |
|---|---|
| Effective Year Built | Effective 1939 |
| Lot Area | 2,500 sqft (0.057 acres) |
| Lot Dimensions | 100 ft deep x 25 ft wide |
| Garage Type | Attached |
| Garage Area | 336 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 828 MARIPOSA AVE |
|---|---|
| City | RODEO |
| State | CA |
| Zip | 94572-1214 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | P1 |
| Legal Description | TOWN OF RODEO LOT 17 BLK 28E |
| Legal Subdivision | RODEO |
| Legal Block | 28E |
| Legal Lot Number | 17 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4001 |
| Census Tract | 358000 |
828 Mariposa Ave is owned by two individuals who acquired it in August 2003.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 2817 GOULARTE DR, PINOLE, CA 94564-2908 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Aug 1, 2003 |
| Transfer Doc | 0000400758 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 828 Mariposa Ave was $2,610.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | John Swett Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $66,757 (+2%) Land $45,276 Building $21,481 | |
| 2025 | $2,610.00 | $65,449 Land $44,389 Building $21,060 |
| 2023 | $2,394.00 (+6.21%) | $62,910 Land $42,666 Building $20,244 |
| 2022 | $2,254.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 828 Mariposa Ave in Zone X, an area of minimal flood risk, within 100 ft of a high-risk flood zone.
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 AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 53 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 53 in force |
| Nearby Flood Claims | 4 (1998–2014) |
| Most Recent Claim | Dec 2014 · rainfall accumulation |
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 828 Mariposa Ave is low, with a 0.01% annual chance of wildfire.
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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 740 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: T-Mobile, Unwired.
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