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3345 Marengo Ave, Altadena
APN 5833-001-009 · map page 5833-001
A 23,917 sq ft residential lot with no building on the tax roll at 3345 Marengo Ave in Altadena, Los Angeles County (APN 5833-001-009). 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-1-10000 (single-family residence) by Los Angeles County. It is assessed at $1,284,894, with a yearly tax bill of $10,798. Property taxes are in default since 2026.
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
- 5833-001-009
- 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
- Tax defaulted
- Yearly Tax Bill
- $10,798
- Year Defaulted
- 2026
From the LA County Treasurer and Tax Collector's rolls, checked Oct 19, 2026.
Tax Assessment History
| Year | Land | Improvement | Total |
|---|---|---|---|
| 2025 | $2,193,000 | $765,000 | $2,958,000 |
| 2024 | $1,480,000 | $445,200 | $1,925,200 |
| 2023 | $39,555 | $175,276 | $214,831 |
| 2022 | $38,780 | $171,840 | $210,620 |
| 2021 | $38,020 | $168,471 | $206,491 |
| 2020 | $37,631 | $166,744 | $204,375 |
| 2019 | $36,894 | $163,475 | $200,369 |
| 2018 | $36,171 | $160,270 | $196,441 |
| 2017 | $35,462 | $152,422 | $187,884 |
| 2016 | $34,767 | $149,434 | $184,201 |
Owner
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Full parcel report · $29
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Official record: county assessor