Alameda County property record for 421 Monaco Ave, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,092 sqft · built 1965 |
| Lot Size | 0.103 acres (4,464 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $1,933 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 87-37-19 |
| Primary APN | 87-37-19 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,092 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1965 |
|---|---|
| Effective Year Built | Effective 1967 |
| Architectural Style | Custom Design |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 4,464 sqft (0.103 acres) |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 421 MONACO AVE |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-3716 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00077 BLK: TR: 2414 |
| Legal Subdivision | MAP OF TRACT 2414 FILED JUNE 16 1964 |
| Legal Tract | 2414 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1022 |
| Census Tract | 440100 |
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 Company Names on Record |
|---|---|
| Mailing Address | 421 MONACO AVE, UNION CITY, CA 94587-3716 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Life Tenant |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Aug 7, 2024 |
| Transfer Doc | 0000032764 |
| Record Updated | Sep 20, 2026 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Union City |
| Unified School District | New Haven Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $80,734 (-6.14%) Land $30,046 Building $57,688 | ||
| 2025 | $1,933.00 (-20.06%) Homeowner's exemption | $86,014 (+4.04%) Land $29,457 Building $56,557 | |
| 2023 | $2,418.00 Homeowner's exemption | $82,674 Land $28,313 Building $54,361 | $687,960 |
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 · 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 | 2 in force |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 75% of the US · above 52% of California |
|---|---|
| Wildfire Likelihood | 0.6% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | ALAMEDA COUNTY WATER DISTRICT serves 344,000 people · EPA ID CA0110001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Nov 2025 |
| 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.
Source: FCC Broadband Data Collection, based on 129 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 1,200 / 35 |
| Tekify Fiber & Wireless Fixed Wireless | 1,000 / 220 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Sail Internet.
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