Alameda County property record for 16839 Columbia Dr, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,262 sqft · built 1988 |
| Lot Size | 0.287 acres (12,500 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $6,106 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 85-6315-69 |
| Primary APN | 85-6315-69 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,262 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Tile |
| Lot Area | 12,500 sqft (0.287 acres) |
| Parking Spaces | 3 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 16839 COLUMBIA DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-1615 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00074 BLK: TR: 5204 |
| Legal Subdivision | TRACT 5204 FILED JANUARY 3 1986 |
| Legal Tract | 5204 |
| Legal Lot Number | 74 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 430200 |
Source: Alameda County records, as of August 5, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 16839 COLUMBIA DR, CASTRO VALLEY, CA 94552-1615 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Mar 11, 2011 |
| Transfer Doc | 0000082723 |
| Record Updated | Sep 20, 2026 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $452,804 (+0.45%) Land $161,300 Building $298,504 | ||
| 2025 | $6,106.00 (+4.29%) Homeowner's exemption | $450,789 (+4.04%) Land $158,137 Building $292,652 | |
| 2023 | $5,855.00 Homeowner's exemption | $433,285 Land $151,997 Building $281,288 | $1,491,210 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective May 25, 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 | High above 76% of the US · above 52% of California |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Direct burnable vegetation |
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 92 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 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures