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Elevator violations for failure to file Periodic, Category 1, Category 5 and Affirmation of Correction issued in August 2023 or later are only available in DOB NOW: Safety. Search the DOB NOW public portal for these records.
Boiler violations for failure to file internal and external inspection reports and affirmation of correction issued in November 2023 or later are only available in DOB NOW: Safety. Search the DOB NOW public portal for these records.
Benchmark and AEUHAZ violations for failure to file an acceptable Certificate of Correction (COC) for a Class 1 summons issued in December 2025 or later are only available in DOB NOW: Safety. Search the DOB NOW public portal for these records.
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Premises: 309 WEST 100 STREET MANHATTAN BIN: 1057134    Block: 1889    Lot: 14
NUMBER TYPE FILE DATE
ALT 671-28 ALTERATION 00/00/1928
ALT 4501-42 ALTERATION 00/00/1942
ALT 579-46 ALTERATION 00/00/1946
ALT 224-55P ALTERATION 00/00/1955
ALT 1082-84 ALTERATION 08/15/1984
CO 35491 (PDF) CERTIFICATE OF OCCUPANCY 00/00/0000
CO 44148 (PDF) CERTIFICATE OF OCCUPANCY 00/00/0000
CO 90854 (PDF) CERTIFICATE OF OCCUPANCY 09/03/1987
FO 2357-48 OIL BURNER APPLICATION 00/00/1948
MISC 1166-85 MISCELLANEOUS 05/30/1985
P 554-28 PLUMBING 00/00/1928
P 941-46 PLUMBING 00/00/1946
SPR 3157-46 SPRINKLERS 00/00/1946
SR 4548-48 SPECIAL REPORT 00/00/1948
UB 522-30* UNSAFE BUILDING 00/00/1930


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If you have any questions please review these Frequently Asked Questions, the Glossary, or call the 311 Citizen Service Center by dialing 311 or (212) NEW YORK outside of New York City.

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