New Jersey property-tax definition
MOD-IV
New Jersey's standardized local property-tax assessment data format used to transmit municipal assessment-roll information.
Worked New Jersey example
Parcel assessment, class, tax and many physical fields in Watchdog originate from MOD-IV-derived public records.
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.