Los Angeles County property record for 542 E Mariposa St, Altadena, CA 91001 · Last verified June 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,253 sqft · built 1949 |
| Lot Size | 0.307 acres (13,367 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $527 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 5840-009-005 |
| Primary APN | 5840-009-005 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,253 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Conventional |
| Construction Type | Wood |
| Roof Type | Flat |
| Roof Material | Gravel |
| Lot Area | 13,367 sqft (0.307 acres) |
| Lot Dimensions | 50 ft deep x 265 ft wide |
| Heating System | Central |
|---|
| Street Address | 542 E MARIPOSA ST |
|---|---|
| City | ALTADENA |
| State | CA |
| Zip | 91001-2209 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MAP 1 ALTADENA SE 9 FT OF NE 265 FT OF LOT 2 AND NW 41 FT OF NE 265 FT OF LOT 3 BLK 14 |
| Legal Subdivision | ALTADENA |
| Legal Block | 14 |
| Legal Lot Number | 2,3 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | PASADENA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 461100 |
Source: Los Angeles County records · APN 5840-009-005
Assessment roll updated May 21, 2026 · Last verified June 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 | 542 E MARIPOSA ST, ALTADENA, CA 91001-2209 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| 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 | $527.00 (-74.59%) Homeowner's exemption | $25,964 (-80.68%) Land $25,964 |
| 2023 | $2,074.00 (+3.24%) Homeowner's exemption | $134,411 Land $38,390 Building $96,021 |
| 2022 | $2,009.00 |
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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