Manhattan · Unit 21 · BBL 1008421126

15 Union Square West, Unit 21

New York, NY 10003 · Manhattan

Also written as: 15 Union Square West Apt 21 · 15 Union Square West #21 · 15 Union Square West Unit 21

Part of 15 Union Square West Condominium

Owner of record: SB UNION SQUARE, LLC

Snapshot updated 2026-09-02 — open the app to refresh for live data.

Assessment (FY2027)

  • Assessed value: $581,746
  • Market value: $1,292,767
  • Tax class: 2

Building

  • Elevator apartment (D4)
  • Built 1965
  • 495 residential / 506 units
  • 21 floors
  • Zoning: C6-1
  • Lot area: 31,800 sf
  • Building area: 443,389 sf

Official records

ZoLa zoning · DOF property tax · Property Portal · ACRIS deeds/mortgages · DOB profile · Tax map · Map

All data sourced from NYC Department of Finance / PLUTO / ACRIS / HPD public records. https://www.sageops.ai/property/manhattan/15-union-square-west-21-1008421126

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