U — Uniformity | ROBUST Framework

What Uniformity measures

Uniformity provides system context for an individual property. The current score uses the municipality's coefficient of deviation, a published measure of variation in assessment-to-sale ratios. Lower COD generally means ratios cluster more tightly around the median.

Current production mapping: the property-score implementation converts municipal COD into a 0–100 Uniformity component. It is the concept that older Watchdog pages often called Assessment Fairness.

Why the naming changed

The old fairness label mixed two different questions. ROBUST reserves O for the individual property's assessment position and U for municipality-wide consistency. This makes the product more precise and prevents a town-level COD statistic from being mistaken for a finding about one parcel.

Illustrative example

Municipality A COD9.5 · tighter clustering

Municipality B COD20.0 · wider variation

COD is system context. It does not establish that a specific property is overassessed.

Evidence behind Uniformity

NJ Division of Taxation Coefficient of Deviation.
Assessment-to-sale ratio distributions.
Historical COD trend where available.
Verified-sale context used in broader Watchdog municipal intelligence.

What it does not mean

A lower Uniformity result does not make a municipality a bad place to live or prove that its officials acted improperly. It means the measured assessment ratios show wider variation and deserve context.

See the statewide data

Watchdog's existing statewide fairness experience is being repositioned as the Uniformity Index because its primary evidence is COD and assessment consistency.

Open the Uniformity Index

Primary sources

NJ Division of Taxation statistical data
Table of Equalized Valuations and Abstract of Ratables.
SR-1A verified arm's-length sales.

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