Welders must be licensed by the Department of Buildings (DOB) to perform structural welding work.

Online

Submit license filings, register for DOB NOW: Licensing, or get additional information.

In Person

Department of Buildings' Licensing Office
55 Chambers Street, 1st Floor

By Phone

Call 311 or 212-NEW-YORK (212-639-9675) for help.

Starting on June 3, 2024, all existing and new DOB NOW users are required to have an NYC.ID account.

  • Users will complete a one-time process of creating an NYC.ID account
  • An NYC.ID account is required to access DOB NOW:
    • Build
    • Safety
    • BIS Options
    • Licensing
  • DOB NOW: Inspections and eFiling account registration is not changing and will not require an NYC.ID account

See NYC.ID announcement.