Alameda County property record for 16816 Columbia Dr, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,830 sqft · built 1988 |
| Lot Size | 0.232 acres (10,100 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,250,000 (Jan 2019) |
| Tax Bill | $17,323 (2025) |
| Deeds & Mortgages | Sep 2018 Line of Credit Feb 2021 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 85-6315-5 |
| Primary APN | 85-6315-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,830 sqft Living Area |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 10,100 sqft (0.232 acres) |
| Street Address | 16816 COLUMBIA DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-1614 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00009 BLK: TR: 5204 |
| Legal Tract | 5204 |
| Legal Lot Number | 9 |
| 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 are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 16816 COLUMBIA DR, CASTRO VALLEY, CA 94552-1614 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Sep 12, 2018 | Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA |
| Feb 11, 2021 | Intrafamily Transfer, Transfer CORNERSTONE TITLE COMPANY |
| Jan 24, 2019 | Grant Deed, Transfer CITADEL SVCNG CORP |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 24, 2019 · Amount on Record |
| Deed Sale | Jan 24, 2019 · Amount on Record |
| Prior Sale | Jun 20, 1997 · Amount on Record |
| Deed Document Number | 201911316 |
| Last Transfer Date | Jan 28, 2021 |
| Transfer Doc | 0000061649 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 16816 COLUMBIA DR, CASTRO VALLEY, CA 94552-1614 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | ACCURATE EQUITY GROUP |
| Name | Verified Name |
|---|
| Document Number | 0000178267 |
|---|---|
| Date | Sep 12, 2018 |
| Instrument | 2018178267 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57104 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Sep 30, 2048 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 11, 2021 |
| Property Address | 16816 COLUMBIA DR, CASTRO VALLEY, CA 94552-1614 |
| Document Number | 0000061649 |
| Instrument Date | Jan 28, 2021 |
| Instrument | 2021061649 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | CORNERSTONE TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 12440 SKYLINE BLVD, OAKLAND, CA 94619-3130 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jan 24, 2019 |
| Property Address | 16816 COLUMBIA DR, CASTRO VALLEY, CA 94552-1614 |
| Document Number | 0000011316 |
| Instrument Date | Dec 26, 2018 |
| Instrument | 11316 |
| Transaction Type | Transfer |
| Record Updated | Feb 6, 2019 |
| Title Company | NORTH AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,375.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 16816 COLUMBIA DR CASTRO VALLEY CA 945521614, CASTRO VALLEY, CA 94552-1614 |
| Document Number | 11317 |
|---|---|
| Date | Jan 24, 2019 |
| Instrument | 11317 |
| Name | CITADEL SVCNG CORP |
|---|---|
| Address | IRVINE, CA 92618 |
| Amount | Amount Recorded |
|---|---|
| Term | 360 Months |
| Due | Jan 23, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.37% |
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 | $1,422,261 (+2%) Land $426,678 Building $995,583 | ||
| 2025 | $17,323.00 (+3.7%) | $1,394,374 (+4.04%) Land $418,312 Building $976,062 | |
| 2023 | $16,705.00 | $1,340,237 Land $402,071 Building $938,166 | $1,556,010 |
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 73% of the US · above 48% 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 64 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 |
| Starlink Satellite | 280 / 30 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
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