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.
Frequently Asked Questions About DOB contractor registration number
What is a DOB contractor registration number?
The identifying number DOB assigns to a business authorized to file building-related permits and applications in New York City.
Is it the same as DOT registration?
No. DOT registration covers street and sidewalk permits. A contractor may hold one, the other, or both depending on the work performed.
When are both needed?
On projects touching both agencies, such as a building renovation that also involves sidewalk or vault work, with the correct number referenced on each filing.
Should owners ask for both numbers?
Yes, when the project spans both agencies. It confirms the full scope of a contractor's authorization.