Property Information

Updating Account Information
Change your mailing address or resolve issues with the name or property address on your Statement of Account.

Borough, Block and Lot (BBL)
Every parcel of land in New York City has been assigned a set of 3 numbers that comprise its Borough, Block, and Lot (BBL) designation. BBLs are used to identify parcels of land for tax and other purposes. If you do not know your property’s BBL number, search for BBL by address.

Dividing (Apportioning) & Merging Lots
Finance's Tax Map Unit must approve plans to split or combine properties.

Tax Maps
The official tax maps for the City of New York are maintained by the Tax Map Unit.

Related Links
Assessment Roll
Annual Notice of Property Value
Real Property Income and Expense (RPIE)