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The Inspection Decline Was Systemic, Not Demographic

Higher-income and lower-income neighborhoods lost inspections at the same rate.

This analysis asked whether the 82% inspection decline fell harder based on how much households earn by ZIP code, the share of renters stretched by housing costs, or racial and ethnic composition. It did not. Across 254 ZIP codes, there is no meaningful relationship between these characteristics and how sharply inspections declined. Higher-income and lower-income ZIP codes, as well as Latino, Black non-Hispanic, Asian non-Hispanic, and White non-Hispanic communities, all lost inspections at roughly equal rates. This points to a systemic and uniform decline rather than a decline concentrated by income, the share of renters stretched by housing costs, or the Hispanic, White, Black, or Asian share of a ZIP code. The statistical measure used to test this is R², which is explained below.

If a disparity existed: what we would expect to see

Lower-income neighborhoods would show steeper declines. Dots would slope downward left to right.

R² well above zero would mean the decline tracked with income, the share of renters stretched by housing costs, or the Hispanic, White, Black, or Asian share of a ZIP code.

✓ What we actually found

No pattern. Dots are scattered randomly regardless of income, housing costs, or racial and ethnic composition.

R² near 0.0 means demographics do not explain inspection decline. The decline was equally distributed.

R² = 0.016
Income vs. Inspection Decline
Median household income explains less than 2% of the variation in inspection decline across ZIP codes.
R² = 0.004
Renters Stretched by Housing Costs vs. Inspection Decline
Renters stretched by housing costs explains less than 1% of the variation in inspection decline across ZIP codes.
R² ≤ 0.020
Race / Ethnicity vs. Inspection Decline
No racial or ethnic group shows a meaningful relationship with how much inspections declined across ZIP codes.

All Six Variables Tested. None Explained the Decline.

R² measures how much of the variation in inspection decline is explained by each variable. Values near zero indicate no meaningful relationship.

Variable tested Category R² value Variation explained
Median Household Income Economic 0.016
1.6%. No meaningful relationship.
Renters Stretched by Housing Costs Economic 0.004
0.4%. No meaningful relationship.
Hispanic / Latino Population (%) Race / Ethnicity 0.015
1.5%. No meaningful relationship.
White Non-Hispanic Population (%) Race / Ethnicity 0.020
2.0%. No meaningful relationship.
Black Non-Hispanic Population (%) Race / Ethnicity 0.020
2.0%. No meaningful relationship.
Asian Non-Hispanic Population (%) Race / Ethnicity 0.005
0.5%. No relationship detected.

This analysis used R² ≥ 0.10 as a conservative threshold for a meaningful relationship, meaning at least 10% of variation explained. All values here are under 0.03, confirming the inspection decline was not demographically targeted.

Why only four racial and ethnic groups were tested: The demographic analysis focused on Hispanic or Latino, White non-Hispanic, Black non-Hispanic, and Asian non-Hispanic populations because these four groups had large enough populations at the ZIP code level to produce statistically reliable results. Other groups, including American Indian or Alaska Native, Native Hawaiian or Pacific Islander, and Two or More Races, were present in the Census data but represented very small populations within individual ZIP codes. Including them would have produced unreliable results that could misrepresent those communities.

Interactive Tool

Where do you live? Look up your ZIP code.

See how much housing inspections changed in your neighborhood compared to the rest of LA County.

Demographic Analysis: Inspection Change by Demographic Variable

Each dot represents one ZIP code. 254 ZIP codes with valid demographic data and inspections in the January-September 2023 baseline window. Select a variable using the tabs below, then hover over any dot for details.

Median Household Income
Renters Stretched by Housing Costs
R² = 0.016
Explanatory power
Less than 2% of variation explained

Trend line shown for reference. A flat or near-flat slope confirms no meaningful relationship between demographics and inspection change.
Negative values indicate fewer inspections than 2023. Positive values indicate more inspections than 2023.
A small number of ZIP codes exceed 100% because they had very few inspections in 2023 compared to later years. Three ZIP codes exceed this chart's 175% range and are not plotted: 91381 (500%), 91020 (212.5%), and 91214 (192.3%). All three are included in the R² calculation above.

What This Suggests

The expected story is that when public services decline, disadvantaged communities lose the most. Across 254 ZIP codes, this data refuses to tell that story: how much households earn by ZIP code barely matters, how many renters are stretched thin by housing costs barely matters, and whether a ZIP code is majority Hispanic, White, Black, or Asian barely matters. None comes close to explaining where inspections were lost.

How the test was run
The test
Each ZIP code's inspection decline, over the same nine months of 2023 and 2025, was tested against six variables from the American Community Survey: median household income, renters stretched by housing costs, and percent White, Black, Hispanic, and Asian residents.
The result
R-squared values from 0.004 to 0.020. On a scale where 1.0 means a variable fully explains the pattern and 0 means no relationship at all, every variable lands within 2% of zero.
What that rules out
A targeted decline. If inspections had been withdrawn from poor neighborhoods, or from neighborhoods of color, these six numbers could not all sit near zero.

Since none of the six variables explain the decline, the only explanation left is systemwide: the decline hit everywhere at roughly comparable rates, regardless of who lives there. That changes what kind of fix makes sense. A targeted decline would call for targeted reforms, like closer oversight of where inspectors are sent and why. A uniform collapse calls for something different: more budget, more staff, and a rule requiring that inspections actually happen. The Board has already written that rule once. RHHP, in effect since October 2024, gives unincorporated areas a mandated four-year inspection cycle. The 85 contracted cities, which account for more than 99% of the inspections in this dataset, have no equivalent.

An equal decline is not the same as equal harm. These six variables rule out a ZIP-level demographic pattern in where inspections were lost, not in what the loss costs. Conditions were not uniform when inspectors did go: among the 176 ZIP codes with 50 or more inspections, violation rates ranged from 0% to 77%, with a median of 38%. The same missed inspection means more in a building that was already failing.

The questions this raises
If no community was spared, restoring inspections is not a targeting problem. It is a funding and staffing problem for the whole county. Who pays to fix that?
Unincorporated LA County now has a guaranteed four-year inspection cycle. What is the equivalent guarantee for the City of Los Angeles and the other 84 contracted cities?
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Who should read this
The LA County Board of Supervisors, which controls both the Environmental Health budget and the contracts that could carry a mandate.

Cindy Cruz · 2026

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