Data rule: every number you enter carries a label — OFFICIAL / BROKER / LISTING / OWNER / LENDER / ESTIMATE / ASSUMPTION / OPINION. Tool rule: nothing here outputs BUY or SELL. Tools return favorable signals, risks, missing information, possible actions, and a confidence level. Zell rule: claims are tagged Verified Zell view / Likely synthesis / Generic RE extension. Where the record is silent, this says "I don't know." Blank rule: where an official government series exists, it ships inside this file and fills itself in, labeled and sourced. Everywhere else the box stays empty on purpose — nobody can recall current Jacksonville data accurately. You pull it, you label it, you own it. Your number always beats the official one.