People seeking a letter confirming the landmark status of a building may fax the address, borough, and block & lot of the building to 212-669-3844, or they may mail a letter containing that information to the Commission’s office.  A Landmark Status letter will be issued within two to three weeks of receipt of the request.

These letters state whether or not a particular address is designated a New York City Landmark. 

If the address is designated, the letter states whether the structure is an Individual Landmark or designated as part of a Historic District.