Effective 5/17/2021, COF holders can apply, renew and make payments online.
Renewals that are not Fee Exempt and do not require any changes to COF holder information can be processed online without the need to create a NYC ID:
FDNY Business requires a user account on NYC.gov (NYC.ID). Most COF renewals can be processed without the need to create a NYC ID.
To renew in person, visit the testing center of FDNY at 9 MetroTech Center, Brooklyn, NY 11201.