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3506 Monterosa Dr, Altadena
APN 5843-004-001 · map page 5843-004
A 11,996 sq ft residential lot with no building on the tax roll at 3506 Monterosa Dr in Altadena, Los Angeles County (APN 5843-004-001). It burned in the Eaton Fire (2025). 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 $619,421, with a yearly tax bill of $7,922. 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
1 mapped fire since 2025
Eaton Fire, 2025
High Risk
Property Details
- APN
- 5843-004-001
- Area
- Altadena, Los Angeles County
- Zoning
- R-1-10000 · Single-Family Residence
- Assessor Use
- Single (0101)
Solar
4,446 hrs/yr
Excellent
Weather & Climate
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Taxes
- Tax Status
- Current
- Yearly Tax Bill
- $7,922
From the LA County Treasurer and Tax Collector's rolls, checked Oct 19, 2026.
Tax Assessment History
| Year | Land | Improvement | Total |
|---|---|---|---|
| 2025 | $607,276 | $0 | $607,276 |
| 2024 | $915,950 | $311,116 | $1,227,066 |
| 2023 | $897,991 | $305,016 | $1,203,007 |
| 2022 | $880,384 | $299,036 | $1,179,420 |
| 2021 | $863,122 | $293,173 | $1,156,295 |
| 2020 | $854,272 | $290,167 | $1,144,439 |
| 2019 | $837,522 | $284,478 | $1,122,000 |
| 2018 | $821,100 | $278,900 | $1,100,000 |
| 2017 | $324,185 | $98,601 | $422,786 |
| 2016 | $317,829 | $96,668 | $414,497 |
Owner
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Full parcel report · $29
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Official record: county assessor