SKYDB Building database

Tall buildings worldwide, with heights, construction status and the companies involved.

Rankings of tall buildings

Tall Building Markets

Tall buildings, tracked.

SKYDB is collecting verifiable information about buildings.

definition strict definition

NYC BBL

The Borough-Block-Lot number identifying a tax lot in New York City, assigned by the Department of Finance.

A BBL identifies a tax lot in New York City and is assigned by the Department of Finance. It is ten digits: one for the borough, five for the block, four for the lot. Manhattan is 1, the Bronx 2, Brooklyn 3, Queens 4 and Staten Island 5.

The number names land, not a building. One lot can carry several buildings and a large development can span several lots, so a BBL and a building do not correspond one to one.

Where a single building has to be identified in New York, the Building Identification Number does that. SKYDB keeps both, in fields of their own.