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New York StateUnified Court System

Finding the Multiple Dwelling Registration (MDR) for your building

1. Go to the NYC Department of Housing Preservation & Development website at Department’s website at


2. In the “Complaints, Violations and Registration Information” section, put in your building information.

3. Click on “Registration” in the left side menu.


• The MDR number is located in the top right of the screen.

• The Managing Agent information is located in the Summary Report.

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