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3584 Monterosa Dr, Altadena
APN 5843-004-020 · map page 5843-004
A 10,649 sq ft residential lot with no building on the tax roll at 3584 Monterosa Dr in Altadena, Los Angeles County (APN 5843-004-020). It burned in the Eaton Fire (2025), and 2 earlier mapped fires reached it. It is in a Very High CAL FIRE hazard zone and outside the FEMA flood zone (zone X). It is zoned R-1-10000 (single-family residence) by Los Angeles County. It is assessed at $33,949, with a yearly tax bill of $1,119. 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
Very High
High Risk
Past Fires
3 mapped fires since 1900
Eaton Fire, 2025
High Risk
Property Details
- APN
- 5843-004-020
- Area
- Altadena, Los Angeles County
- Zoning
- R-1-10000 · 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
- $1,119
From the LA County Treasurer and Tax Collector's rolls, checked Oct 19, 2026.
Tax Assessment History
| Year | Land | Improvement | Total |
|---|---|---|---|
| 2025 | $33,284 | $0 | $33,284 |
| 2024 | $50,201 | $53,084 | $103,285 |
| 2023 | $49,217 | $52,044 | $101,261 |
| 2022 | $48,252 | $51,024 | $99,276 |
| 2021 | $47,306 | $50,024 | $97,330 |
| 2020 | $46,821 | $49,512 | $96,333 |
| 2019 | $45,903 | $48,542 | $94,445 |
| 2018 | $45,003 | $47,591 | $92,594 |
| 2017 | $44,121 | $46,658 | $90,779 |
| 2016 | $43,256 | $45,744 | $89,000 |
Owner
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Full parcel report · $29
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Official record: county assessor