Public Health in Housing: An Analysis of LA County Inspection Trends

An analysis of 48,085 housing inspections and 37,026 violations from the LA County Department of Public Health, covering January 2023 through September 2025.

By Cindy Cruz·LinkedIn·GitHub·Front-end code by Claude (Anthropic)
82%
Inspection decline over the same nine months of 2023 and 2025.
42%
Share of inspections finding a violation, up from 32% in 2023.
58%
Of all inspections conducted in the City of Los Angeles, meaning countywide trends are shaped by one jurisdiction.
What the Data Shows
Demographic Analysis
Across 254 ZIP codes, income, housing costs, and racial and ethnic composition did not explain where inspections fell. The decline was systemic, not concentrated by income, housing cost, or race across ZIP codes.
No Inspection Schedule Required
No law requires county public health inspectors to inspect any city building on any schedule. Other county housing programs operate on mandated inspection cycles. This one does not, even though LA has the highest rentership rate of any major U.S. metro, 53% of households rent, and renters have no direct way to require an inspection the way an owner controls their own property.
Overlapping Authority
In the City of LA, the District Inspection Branch and the city's housing program inspect the same buildings, one for public health hazards and one for housing code violations. When District Inspection Branch inspections decline, the city program does not fill that gap.
Before You Sign a Lease
Look Up Any Inspected Property
Search 36,379 addresses. See violation history and what inspectors cited, in the county’s own words.
The analysis, in order
01
Start Here
Who Inspects What and Why
The agencies, programs, and terms behind the data, including DIB, SCEP, RHHP, and the key legal definitions. Context for reading everything that follows.
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02
The Decline
Inspections Fell 82% While Violation Rates Climbed
The headline finding across 48,085 inspections and 37,026 violations: an 82% drop over the same nine months of 2023 and 2025, with violation rates rising from 32% to 42%. Includes the validation check.
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03
Violations by Area
Violation Rates Rose Across LA Neighborhoods
An interactive chart and table across 95 city and area groups. Click any group to filter, with a City of LA breakdown.
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04
Property Types
What Properties Are Inspected and What Is Found
The breakdown across multi-family dwellings and hotels, plus the ten most common violations.
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05
Interactive ToolTool
Look Up a Property
Search any of 36,379 inspected addresses to see how many violations were found, in which years, and exactly what inspectors cited, in the county's own words.
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06
Equity
The Decline Was Systemic, With No Demographic Disparities
A demographic analysis across 254 ZIP codes testing the decline against income, renters stretched by housing costs, and racial and ethnic composition. The loss was broad, not concentrated.
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07
Methods
How Every Number Was Built
Each figure traced from the raw County and Census files: the window, the joins, the derived fields, and the math, with the fields and steps to reproduce any number.
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08
Limitations
What This Analysis Cannot Tell You
Sixteen documented limitations covering data availability, excluded records, geographic scope, and what the analysis can and cannot support.
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Cindy Cruz · 2026

LinkedIn·GitHub