Free tool · NYC PLUTO
When was that building built?
Enter any NYC address. We show you the year built, building class, and property details from official city records. Free, no signup.
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How this works
Year-built data: where it comes from, what it means.
NYC's PLUTO dataset (Primary Land Use Tax Lot Output) published by the Department of City Planning is the authoritative source for year built. For older buildings, the year reflects the earliest certificate of occupancy on file. Actual construction may pre-date that by months or years.
For pre-1930s buildings, year-built accuracy depends on Sanborn fire-insurance maps and Department of Buildings paper records, which are sometimes inconsistent. We default to the PLUTO yearbuilt field and flag any building where our cross-check against the earliest ACRIS-recorded deed disagrees by more than 5 years.
Building class codes follow the NYC Department of Finance classification system. The first letter indicates the broad category (A = one-family, C = walk-up, D = elevator, R = condo), and the second character narrows the sub-type. Our building class guide covers every code in detail.