Key:nycdoitt:bin

Used within New York City to specify the Building Identification Number (BIN) assigned to each building by the City of New York's Department of Information Technology and Telecommunications (DoITT).

This tag was introduced during an import of New York City building footprints that occurred in 2013-2014.

Values

Normal values for nycdoitt:bin are 7-digit numbers beginning with 1, 2, 3, 4, or 5. The first digit specifies the borough within NYC that contains the building in question:

• 1xxxxxx for Manhattan
• 2xxxxxx for The Bronx
• 3xxxxxx for Brooklyn
• 4xxxxxx for Queens
• 5xxxxxx for Staten Island

Note that nycdoitt:bin values are not necessarily unique. Thousands of buildings with incomplete records were imported with placeholder BINs 1000000, 2000000, 3000000, 4000000, or 5000000, depending on the borough. There are also instances where multiple buildings constructed as part of a single development share a single BIN.

A building renovation, even a major one that changes a building's height and footprint, will usually keep the same BIN as the original building. A newly constructed building may get a fresh BIN, or may inherit one from a demolished building that previously stood on the same site. Semicolon-separated values have been used when formerly distinct buildings are combined into a single building.

Possible Mistakes

Though BINs are sometimes visible on permits posted at new construction sites, they usually cannot be determined by survey. Mappers unaware of the nycdoitt:bin tag sometimes incorrectly delete, modify, or reuse values when mapping buildings in NYC. While it's good practice to add the correct BIN to newly mapped buildings, it's better to omit it when in doubt.

The nycdoitt:bin tag should only be used on building ways or building multipolygon relations. It refers to the physical building, not to a building's use or contents, so tagging shop or amenity nodes with a BIN is incorrect. Because the iD map editor fails to recognize nycdoitt:bin as a building tag, this error is frequently caused by mappers using iD's "Extract" operation, which will move the tag from the building to a node inside a building. (Similarly, using iD's "Downgrade" operation will delete the nycdoitt:bin tag altogether.)

See Also

• NYC Department of Buildings Building Information Search to research building information by BIN or address
• iD issue 8539 on GitHub, describing iD's incorrect handling of the nycdoitt:bin tag.