New Jersey property-tax definition
Improvement ratio
The share of a parcel's total assessment allocated to improvements rather than land.
Worked New Jersey example
If improvements are $240,000 of a $300,000 total assessment, the improvement share is 80%; that describes the assessment split, not construction quality or market value.
Why it matters
Watchdog keeps the definition beside the property data so users can distinguish an observed public record from an interpretation or derived screening signal.
Official source
For homeowners
Use the term to understand what a tax or assessment record is actually saying before assuming it represents market value or a future bill.
For professionals
Keep the source and observation date with the number, verify the authoritative record, and document any calculation or professional conclusion separately.