Loading map...
42 W Mariposa St, Altadena
APN 5835-006-005 · map page 5835-006
A 6,140 sq ft residential lot with no building on the tax roll at 42 W Mariposa St in Altadena, Los Angeles County (APN 5835-006-005). 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 $10,651, with a yearly tax bill of $629. 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
- 5835-006-005
- Area
- Altadena, Los Angeles County
- Zoning
- R-1-7500 · Single-Family Residence
- Assessor Use
- Single (0100)
Solar
4,446 hrs/yr
Excellent
Weather & Climate
Loading weather...
Taxes
- Tax Status
- Current
- Yearly Tax Bill
- $629
From the LA County Treasurer and Tax Collector's rolls, checked Oct 19, 2026.
Tax Assessment History
| Year | Land | Improvement | Total |
|---|---|---|---|
| 2025 | $10,443 | $0 | $10,443 |
| 2024 | $15,751 | $13,164 | $28,915 |
| 2023 | $15,443 | $12,906 | $28,349 |
| 2022 | $15,141 | $12,653 | $27,794 |
| 2021 | $14,845 | $12,405 | $27,250 |
| 2020 | $14,693 | $12,278 | $26,971 |
| 2019 | $14,405 | $12,038 | $26,443 |
| 2018 | $14,123 | $11,802 | $25,925 |
| 2017 | $13,847 | $11,571 | $25,418 |
| 2016 | $13,576 | $11,345 | $24,921 |
Owner
Who owns this land?
Thinking of buying?
Talk to a local land agent
An agent who knows land in this area can check zoning, access, water and what nearby lots sold for, and make an offer for you.
Buying this land?
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