Alameda County property record for 4138 Webster St, Oakland, CA 94609
| Property Type | Quadplex |
|---|---|
| Details | 4 bd · 4 ba · 3,402 sqft · built 1925 |
| Lot Size | 0.144 acres (6,265 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $6,496 (2025) |
| Deeds & Mortgages | Sep 2025 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 12-1009-25-1 |
| Primary APN | 12-1009-25-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 16 Rooms |
| Units | 4 Units |
| Stories | 2 Stories |
| Building Area | 3,402 sqft Living Area |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1925 |
| Construction Type | Wood |
| Lot Area | 6,265 sqft (0.144 acres) |
| Parking Spaces | 648 Parking Spaces |
| Street Address | 4138 WEBSTER ST |
|---|---|
| City | OAKLAND |
| State | CA |
| Zip | 94609-2557 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Quadplex |
| Legal Description | LOT: 00001 BLK: 0025 AR: 0012 PAGE: 1009 ;LOT: 00002 BLK: AR: 0052 PAGE: 1522 ;LOT: 00002 BLK: 0018 AR: 0013 PAGE: 1169 |
| Legal Subdivision | CENTRAL OAKLAND MAP #3 |
| Legal Block | K |
| Legal Lot Number | 13,14 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | OAKLAND |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 401200 |
4138 Webster St, a quadplex, is held in a trust since February 2013.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 4278 OAKWOOD AVE, LA CANADA FLINTRIDGE, CA 91011-3407 |
| Owner Type | Company |
| Vesting | Trust, Family 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 19, 2013 |
| Transfer Doc | 0000071594 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 23, 2025 |
| Property Address | 4138 WEBSTER ST, OAKLAND, CA 94609-2557 |
| Document Number | 0000118454 |
| Map Reference | MB 21 PG 5 |
| Instrument Date | Sep 4, 2025 |
| Instrument | 2025118454 |
| Transaction Type | Transfer |
| Record Updated | Oct 20, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4278 OAKWOOD AVE, LA CANADA, CA 91011-3407 |
The 2025 property tax bill for 4138 Webster St was $6,496.
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 | $183,218 (+2%) Land $139,677 Building $43,541 | |
| 2025 | $6,496.00 | $179,625 Land $136,938 Building $42,687 |
| 2023 | $6,173.00 | $172,651 Land $131,621 Building $41,030 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4138 Webster 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 4138 Webster 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 857 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: Astound Broadband, GeoLinks, Google Fiber, T-Mobile.
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