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DOB contractor registration number

Permits, Licensing & Regulatory Approvals
DOB contractor registration number The identifying number DOB assigns to a business authorized to file building-related permits and applications in New York City.

This registration is distinct from DOT's contractor registration for street and sidewalk permits — a contractor can hold one, the other, or both depending on the scope of work they perform. For a project touching both agencies, like a building renovation that also requires sidewalk or vault work, a contractor typically needs to maintain both registration numbers and reference the correct one on each agency's filings. Property owners comparing contractors can ask for both numbers to confirm the full scope of a contractor's authorization.

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