Los Angeles County property record for 520 E Mariposa St, Altadena, CA 91001
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 3,852 sqft · built 1910 |
| Lot Size | 0.585 acres (25,460 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,220,000 (Nov 2003) |
| Tax Bill | $8,571 (2025) |
| Deeds & Mortgages | Jan 2026 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 5840-009-001 |
| Primary APN | 5840-009-001 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 3,852 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 1935 |
| Architectural Style | Conventional |
| Construction Type | Wood |
| Roof Type | Hip |
| Roof Material | Composition Shingle |
| Lot Area | 25,460 sqft (0.585 acres) |
| Lot Dimensions | 182 ft deep x 139 ft wide |
| Heating System | Central |
|---|---|
| Water Source | Commercial |
| Street Address | 520 E MARIPOSA ST |
|---|---|
| City | ALTADENA |
| State | CA |
| Zip | 91001-2209 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | LCR110 |
| Legal Description | MAP 1 ALTADENA NE 182 FT OF LOT 1 AND NW 30 FT OF NE 182 FT OF LOT 2 BLK 14 |
| Legal Subdivision | MAP #1 ALTADENA |
| Legal Block | 14 |
| Legal Lot Number | 1,2 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | PASADENA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 461100 |
Source: Los Angeles County records, as of July 7, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 2510 LAS LUNAS ST, PASADENA, CA 91107-2516 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 12, 2003 · Amount on Record |
| Deed Sale | Nov 12, 2003 · Amount on Record |
| Prior Sale | Apr 12, 2002 · Amount on Record |
| Deed Document Number | 20033397951 |
| Prior Transfer Date | May 13, 2003 |
| Prior Transfer Doc | 0001424692 |
| Record Updated | Sep 20, 2026 |
| Document Type | Transfer on Death Deed |
|---|---|
| Jurisdiction | LOS ANGELES CA |
| Recording Date | Jan 21, 2026 |
| Property Address | 520 E MARIPOSA ST, ALTADENA, CA 91001-2209 |
| Document Number | 0000050102 |
| Map Reference | MB 16 PG 45&46 |
| Instrument Date | Jan 15, 2026 |
| Instrument | 26-0050102 |
| Transaction Type | Transfer |
| Record Updated | Jan 30, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 2510 LAS LUNAS ST, PASADENA, CA 91107-2516 |
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
Source: Los Angeles County assessment roll, as of May 21, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Unified School District | Pasadena Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $8,571.00 (-58.3%) Homeowner's exemption | $739,330 (-58.21%) Land $739,330 |
| 2023 | $20,556.00 (+9.87%) Homeowner's exemption | $1,769,221 Land $1,093,262 Building $675,959 |
| 2022 | $18,709.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective September 30, 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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1986) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Mar 1986 · river or lake 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 | Low lower than 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | RUBIO CANON LAND & WATER ASSOCIATION private · serves 6,646 people · EPA ID CA1910140 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Sep 2022 |
| Lead | Under 1 ppb (2023–2025) 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 544 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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