Alameda County property record for 4419 Gem Ave, Castro Valley, CA 94546 · Last verified August 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 1 Baths |
| Year Built | Built 1950 |
| Square Footage | 1,060 sqft Living Area |
| Lot Size | 5,000 sqft (0.115 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $53,000 (1999) |
| Tax Bill | $2,970.00 (2025) |
| Primary APN | 84C-1064-63 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Baths |
| Total Rooms | 5 Rooms |
| Building Area | 1,060 sqft Living Area |
| Stories | 1 Stories |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Exterior Material | Wood Siding Exterior |
| Construction Type | Wood Construction |
| Roof Material | Roll Tar & Gravel Roof |
| Lot Area | 5,000 sqft (0.115 acres) |
| Depth X Width | 100 ft x 50 ft Depth x Width |
| Heating System | Floor/Wall Furnace Heating |
|---|---|
| Heating Fuel | Gas Heating Fuel |
| Sewage | Municipal Sewage |
| Water Source | Commercial Water Source |
| Street Address | 4419 GEM AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-4740 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT: 00020 BLK: 0002 TR: 0979 |
| Legal Tract | 0979 |
| Legal Block | 2 |
| Legal Lot Number | 20 |
| Jurisdiction | ALAMEDA CA |
| Minor Civil Division | HAYWARD |
| Census Blockgroup | 3 |
| Census Block | 3003 |
| Census Tract | 430800 |
Source: Alameda County records · APN 84C-1064-63
Assessment roll updated August 5, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 4419 GEM AVE, CASTRO VALLEY, CA 94546-4740 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Feb 03, 1999 · Amount on Record |
| Deed Sale | Feb 03, 1999 · Amount on Record |
| Deed Doc Number | 199949855 |
| Last Transfer Date | Oct 15, 2004 |
| Transfer Doc | 0000470982 |
| Record Refreshed | Sep 20, 2026 |
Source: Alameda County records · Assessment roll updated August 5, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $181,754 (+2.08%) Land $139,678 Building $49,076 | ||
| 2025 | $2,970.00 (+2.77%) Homeowner's exemption | $178,052 (+0.1%) Land $136,939 Building $48,113 | |
| 2024 | $2,890.00 (+2.37%) | ||
| 2023 | $2,823.00 Homeowner's exemption | $177,867 Land $131,622 Building $46,245 | $757,980 |
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