New York City open data

The city's own land

Every one of the 15,188 tax lots the city owns or leases, sorted by how ready each site is to become housing.

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Lots with no recorded use

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Acres of that unused land

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Zoning type

Minimum lot size any

Only lots zoned for housing as-of-right Only lots flagged for potential disposition

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About this map

Inspired by the NYU Furman Center's interactive maps of city-owned land and the Mamdani administration's LIFT task force goal of 25,000 homes on public land.

Data: Department of City Planning City Owned and Leased Properties (COLP) joined to MapPLUTO for lot size, zoning and lot shapes, via NYC Open Data.

Full methodology, categories and caveats →

Made with AI assistance.
This map was built by joining public city datasets with an AI coding assistant. The categories are a simplification of a complex reality — a lot's true development potential depends on soil, easements, existing tenants, community plans and politics that no dataset fully captures. The 3D "capacity" is a rough zoning-based estimate, not a design. Treat everything here as a starting point for reporting, not a buildable-sites list. Verify any specific parcel against primary records before relying on it.

Building height shows zoned residential capacity (floor-area ratio) · drag to rotate