Contra Costa County property record for 331 Rosemarie Pl, Bay Point, CA 94565
| Property Type | Townhouse |
|---|---|
| Details | 2 bd · 1.5 ba · 1,083 sqft · built 1987 |
| Lot Size | 0.054 acres (2,352 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $130,000 (Oct 2009) |
| Tax Bill | $2,725 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 098-510-048-6 |
| Primary APN | 098-510-048-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,083 sqft Living Area |
| Gross Area | 1,413 sqft |
| 1st Floor Area | 618 sqft |
| Basement Area | 465 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1987 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Roof Material | Composition Shingle |
| Lot Area | 2,352 sqft (0.054 acres) |
| Lot Dimensions | 84 ft deep x 29 ft wide |
| Garage Type | Attached |
| Garage Area | 330 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 331 ROSEMARIE PL |
|---|---|
| City | BAY POINT |
| State | CA |
| Zip | 94565-6707 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | P1 |
| Legal Description | T6554 L48 |
| Legal Tract | 6554 |
| Legal Lot Number | 48 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 315000 |
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 | 377 WASHINGTON DR, MILPITAS, CA 95035-3215 |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 2, 2009 · Amount on Record |
| Deed Sale | Oct 2, 2009 · Amount on Record |
| Prior Sale | Jun 16, 2009 · Amount on Record |
| Deed Document Number | 2009233997 |
| Prior Transfer Date | Aug 6, 2009 |
| Prior Transfer Doc | 0000233998 |
| Record Updated | Oct 29, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $171,144 (+2%) Land $78,989 Building $92,155 | |
| 2025 | $2,725.00 (+6.16%) | $167,790 (+4.04%) Land $77,441 Building $90,349 |
| 2023 | $2,567.00 (+0.63%) | $161,277 Land $74,435 Building $86,842 |
| 2022 | $2,551.00 |
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 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | GOLDEN STATE WATER COMPANY - BAY POINT private · serves 23,765 people · EPA ID CA0710002 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jun 2023 |
| Lead | Under 1 ppb (2024–2026) 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 431 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
May also be available: AT&T, Unwired, Verizon.
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