Los Angeles County property record for 401 E Mariposa St, Altadena, CA 91001 · Last verified June 2026
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 4 ba · 3,405 sqft · built 1911 |
| Lot Size | 0.976 acres (42,498 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $5,454 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 5840-005-028 |
| Primary APN | 5840-005-028 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 12 Rooms |
| Units | 2 Units |
| Stories | 1 Story |
| Building Area | 3,405 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1911 |
|---|---|
| Effective Year Built | Effective 1922 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 42,498 sqft (0.976 acres) |
| Lot Dimensions | 250 ft deep x 160 ft wide |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Water Source | Commercial |
| Street Address | 401 E MARIPOSA ST |
|---|---|
| City | ALTADENA |
| State | CA |
| Zip | 91001-2206 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | MR 16-45-46 NW 62 FT OF NE 40 FT AND SE 49 FT LOT 14 AND ALL OF LOT 13 BLK 24 |
| Legal Subdivision | ALTADENA MAP #1 |
| Legal Block | 24 |
| Legal Lot Number | 14,13 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | PASADENA |
| Census Block Group | 5 |
| Census Block | 5005 |
| Census Tract | 460200 |
Source: Los Angeles County records · APN 5840-005-028
Assessment roll updated May 21, 2026 · Last verified June 2026
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| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 401 E MARIPOSA ST, ALTADENA, CA 91001-2206 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 01, 1996 |
| Deed Sale | Nov 01, 1996 |
| Deed Document Number | 19961779246 |
| Last Transfer Date | May 27, 2025 |
| Transfer Doc | 0000571084 |
| Record Updated | Sep 20, 2026 |
Source: Los Angeles County records · Assessment roll updated May 21, 2026 · Last verified June 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Unified School District | Pasadena Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $5,454.00 (-53.89%) | $402,606 (-56.15%) Land $402,606 |
| 2024 | $11,827.00 (+2.33%) | |
| 2023 | $11,558.00 (+3.41%) | $918,047 Land $595,343 Building $322,704 |
| 2022 | $11,177.00 |
Source: FEMA National Flood Hazard Layer, Los Angeles County (06037C), updated September 30, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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