The words on a Los Angeles report
- AIN. The county assessor's identification number for a parcel — ten digits — on which the roll is keyed.
- PIN. The city's own parcel identifier, on which the address register and code-enforcement cases are keyed. Not the AIN; the two never join directly, and the report bridges them with the county's parcel map.
- Base year. The roll year a parcel's assessed value was last reset to its sale price under Proposition 13. Everything since is that price raised by at most about two per cent a year.
- Land and improvement. The two halves of an assessed value. When the land value jumps and the improvement value falls together, the county has priced the building as something on its way out.
- Homeowners' exemption. $7,000 off the assessed value where the owner claimed it. Its presence says something about occupancy; its absence says less.
- NIBRS. The federal incident-reporting standard LAPD moved to through 2024. Its categories are not the old system's, which is why the report counts the two separately.
- Hundredth block. How LAPD publishes a location — the block, not the address — and why the area count is a box the width of the radius.
- Code-enforcement case. LADBS's record that it opened a matter on a parcel. A register of cases open and closed, not complaints and not violations in another city's sense.
- Finaled. A permit closed out after its final inspection. One issued and not finaled is still open.
- Council district. The city's political district. Every row on a list carries one; the city publishes no neighborhood on the feed.
- RSO. The Rent Stabilization Ordinance. In law; not in a register the report can read, so no rent-control finding is made.
Counts run 4 September 2026.