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3475 Marengo Ave, Altadena

APN 5833-001-035 · map page 5833-001

SingleCurrentAssessorGoogle Maps

A 10,062 sq ft residential lot with no building on the tax roll at 3475 Marengo Ave in Altadena, Los Angeles County (APN 5833-001-035). 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 $500,035, with a yearly tax bill of $6,637. Property taxes are not in default.

Size

10,019sqft

Assessed

$500,035

Fire Zone

Very High

CAL FIRE

Flood Zone

X

Outside flood zone

Taxes

Current

$6,637/yr bill

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

Check before buying

From FEMA flood maps and CAL FIRE hazard zones. Maps can lag; confirm with the county before you buy. What the zones mean: flood, fire.

APN
5833-001-035
Area
Altadena, Los Angeles County
Zoning
R-1-10000 · Single-Family Residence
Assessor Use
Single (0100)

4,446 hrs/yr

Excellent

Summer14.4h
Winter9.9h

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Tax Status
Current
Yearly Tax Bill
$6,637

From the LA County Treasurer and Tax Collector's rolls, checked Oct 19, 2026.

↑ 96% increase2016 → 2025
$251K'16$256K'17$261K'18$890K'19$908K'20$917K'21$936K'22$954K'23$973K'24$490K'25
YearLandImprovementTotal
2025$490,231$0$490,231
2024$739,413$233,928$973,341
2023$724,915$229,342$954,257
2022$710,701$224,846$935,547
2021$696,766$220,438$917,204
2020$689,622$218,178$907,800
2019$676,100$213,900$890,000
2018$71,260$189,452$260,712
2017$69,863$185,738$255,601
2016$68,494$182,097$250,591

Who owns this land?

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.

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.

Source: la-county-assessorUpdated: 10/19/2026

Official record: county assessor

All 14 lots on assessor map book 5833, page 001 →