Start one known NYC building with the right public-record workflow.
Use one exact Building Identification Number to see which of four official DOB or HPD sources return rows, then open the relevant source-specific record view.
Use this after setting up your research workspace
Start a source-aware selected-property trial, then use an exact BIN only after your team has identified the building it is authorized to review.
Keep each source and each decision separate.
Use the source-specific record workflow for the selected building, retain the source context, and decide what merits direct agency verification next.
Start a 7-day research trial