DOB makes available a dataset of certificate of occupancy records on Open Data, but, as of September 2024, it only covers 2012-07-12 to the present. The new Good Cause Eviction law has an exemption for properties that received a certificate of occupancy on or after 2009-01-01 so to this requires additional historic data.
Machine readable data records for all certificates of occupancy issued from at least 2009-01-01 through 2012-07-11. If it's possible to go further back than 2009 with the same machine-readable format please include all years available. Please include all available fields for each certificate of occupancy record, but most importantly the following:
- Borough-Block-Lot (BBL) parcel ID
- Building Identification Number (BIN)
- Date the certificate was issued
- Job number
- Job type
- Proposed number of Dwelling Units
- Existing number of Dwelling Units
FOIL_2024-810-4230_COList_2000-2012.csv
DOB responded to the request with a file of all certificate of occupancy records from 2000-01-01 to 2012-07-11. The file is available It is available for download (file is too large to host on github directly), and will also be included in the NYCDB project along with the NYC Open Data file that covers 2012-07-12 to present.