Contra Costa County property record for 289 Bolla Ave, Alamo, CA 94507
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,960 sqft · built 1978 |
| Lot Size | 0.348 acres (15,150 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $8,493 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 193-384-005-8 |
| Primary APN | 193-384-005-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,960 sqft Living Area |
| Gross Area | 4,440 sqft |
| 1st Floor Area | 3,234 sqft |
| 2nd Floor Area | 726 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1981 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 15,150 sqft (0.348 acres) |
| Lot Dimensions | 123 ft deep x 158 ft wide |
| Garage Type | Attached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Water Source | Commercial |
| Street Address | 289 BOLLA AVE |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507-1635 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R15 |
| Legal Description | PCL MAP 61 PG 15 PCL C |
| Legal Tract | 61PM15 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4005 |
| Census Tract | 346102 |
289 Bolla Ave is owner-occupied and held in a trust since February 2007.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 289 BOLLA AVE, ALAMO, CA 94507-1635 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 | Feb 6, 2007 |
| Transfer Doc | 0000041632 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 289 Bolla Ave was $8,493 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $672,341 (+2%) Land $251,628 Building $420,713 | |
| 2025 | $8,493.00 Homeowner's exemption | $659,159 Land $246,695 Building $412,464 |
| 2023 | $8,194.00 (+0.73%) Homeowner's exemption | $633,565 Land $237,116 Building $396,449 |
| 2022 | $8,135.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 289 Bolla Ave in Zone X, an area of moderate flood risk, though there have been 3 flood claims nearby since 1995.
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 8 in force |
| Nearby Flood Claims | 3 (1995–2002) |
| Most Recent Claim | Dec 2002 · river or lake flooding |
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 289 Bolla Ave is low, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 63% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 | 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 284 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL | 100 / 20 |
5G (outdoors only) and 4G LTE
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