identity
Read the guide Resolve one NYC property without guessing
Understand why PropSignal routes by one exact tax lot while keeping multiple addresses and building identifiers visible.
Evidence guides
Read NYC property records without smoothing away uncertainty.
Five practical guides explain what PropSignal's evidence can establish, what it cannot, and how to inspect the source basis before acting.
disagreement
Read the guide Read differences between official records
See how PropSignal keeps source-reported facts separate, identifies a material difference, and leaves the conclusion open.
chronology
Read the guide Read a job, permit, and certificate chronology
Follow dated construction records while keeping every relationship linked, partial, ambiguous, or not established.
property activity
Read the guide Read property activity and open-record backlog
Interpret literal Class B, Class C, and open-record counts without turning public records into a property grade.
observed history
Read the guide Understand observed evidence history
Separate reconstructed earlier releases from evidence PropSignal actually observed changing after collection began.
One rule across every guide
These pages explain deterministic methods. They do not contain a property result, professional conclusion, hidden score, or private workspace state. Open a property page to inspect the actual source-linked evidence.