July 2026 supplemental market value roll
The Mamdani List
Search the city’s public roll of homes, condos, and co-ops that may face New York’s non-primary residence surcharge.
What this is
On July 24, 2026, NYC Department of Finance published a supplemental market value roll related to the annual non-primary residence property surcharge (the “pied-à-terre” tax). I had a hard time finding the real list — it lived buried as compressed ZIP files of CSVs on the assessments page — so I built this to make it searchable for everyone. This site indexes properties at the surcharge value thresholds: 1–3 family homes at $5M+ and condos/co-ops at $1M+. Some co-op rows reflect whole-building market values, not individual units.
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