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25 W Mariposa St, Altadena
APN 5835-003-004 · map page 5835-003
A 6,051 sq ft residential lot with no building on the tax roll at 25 W Mariposa St in Altadena, Los Angeles County (APN 5835-003-004). It burned in the Eaton Fire (2025). It is not in a CAL FIRE hazard zone and outside the FEMA flood zone (zone X). It is zoned R-1-7500 (single-family residence) by Los Angeles County. It is assessed at $360,638, with a yearly tax bill of $4,699. Property taxes are not in default.
Risk Assessment
Flood
Zone X — AREA OF MINIMAL FLOOD HAZARD
Outside flood zone
Low Risk
Fire
CAL FIRE hazard severity zone
None
Low Risk
Past Fires
1 mapped fire since 2025
Eaton Fire, 2025
High Risk
Property Details
- APN
- 5835-003-004
- Area
- Altadena, Los Angeles County
- Zoning
- R-1-7500 · Single-Family Residence
- Assessor Use
- Single (0100)
Solar
4,446 hrs/yr
Excellent
Weather & Climate
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Taxes
- Tax Status
- Current
- Yearly Tax Bill
- $4,699
From the LA County Treasurer and Tax Collector's rolls, checked Oct 19, 2026.
Tax Assessment History
| Year | Land | Improvement | Total |
|---|---|---|---|
| 2025 | $353,567 | $0 | $353,567 |
| 2024 | $533,285 | $172,924 | $706,209 |
| 2023 | $522,829 | $169,534 | $692,363 |
| 2022 | $512,578 | $166,210 | $678,788 |
| 2021 | $502,528 | $162,951 | $665,479 |
| 2020 | $497,376 | $161,281 | $658,657 |
| 2019 | $487,624 | $158,119 | $645,743 |
| 2018 | $478,063 | $155,019 | $633,082 |
| 2017 | $468,690 | $151,980 | $620,670 |
| 2016 | $405,998 | $101,525 | $507,523 |
Owner
Who owns this land?
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Full parcel report · $29
Can you build on it, how do you reach it, and what is it worth? Flood, fire, slope, road access, tax history and nearby sales in one report.
Official record: county assessor