Alameda County property record for 4020 Opal St, Oakland, CA 94609
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 10 bd · 10 ba · 5,327 sqft · built 1989 |
| Lot Size | 0.126 acres (5,479 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,190,000 (Apr 2005) |
| Tax Bill | $30,165 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 12-1005-13-1 |
| Primary APN | 12-1005-13-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 10 Beds |
|---|---|
| Full Baths | 10 Baths |
| Total Rooms | 30 Rooms |
| Units | 10 Units |
| Stories | 2 Stories |
| Building Area | 5,327 sqft Living Area |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Construction Type | Wood |
| Lot Area | 5,479 sqft (0.126 acres) |
| View / Lot | Average |
| Parking Spaces | 10 Parking Spaces |
| Street Address | 4020 OPAL ST |
|---|---|
| City | OAKLAND |
| State | CA |
| Zip | 94609-2666 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | LOT: 00001 BLK: 0013 AR: 0012 PAGE: 1005 |
| Legal Subdivision | ALTON PARK |
| Legal Block | H |
| Legal Lot Number | 9,10 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | OAKLAND |
| Census Block Group | 2 |
| Census Block | 2008 |
| Census Tract | 401200 |
4020 Opal St, a residential property, is owned by two individuals who bought it in April 2005.
Source: Alameda County records, as of September 1, 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 File |
|---|---|
| Mailing Address | 1475 34TH AVE, SAN FRANCISCO, CA 94122-3148 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 5, 2005 · Amount on File |
| Deed Sale | Apr 5, 2005 · Amount on File |
| Prior Sale | Apr 11, 2001 · Amount on File |
| Deed Document Number | 2005132175 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4020 Opal St was $30,165.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Oakland City |
| Unified School District | Oakland Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,686,076 (+2%) Land $589,984 Building $1,096,092 | |
| 2025 | $30,165.00 | $1,653,022 Land $578,418 Building $1,074,604 |
| 2023 | $29,908.00 | $1,588,848 Land $555,963 Building $1,032,885 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4020 Opal St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
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.
The area around 4020 Opal St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 808 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: GeoLinks, Google Fiber.
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