Manhattan · Unit 9FL · BBL 1006951213

521 West 23rd Street, Unit 9FL

New York, NY 10011 · Manhattan

Also written as: 521 W 23rd St Apt 9FL · 521 West 23rd Street #9FL · 521 W 23rd St Unit 9FL

Part of 521 West 23rd Street Condominium

Owner of record: GOLDBERG, JON L

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

Assessment (FY2027)

  • Assessed value: $786,413
  • Market value: $1,747,584
  • Tax class: 2

Building

  • Condominium (RM)
  • Built 2005
  • 336 residential / 338 units
  • 14 floors
  • Zoning: C6-3A / C6-2A
  • Lot area: 19,750 sf
  • Building area: 265,686 sf
  • Flood zone: 1

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/521-west-23-street-9fl-1006951213

Estimates are automated, not appraisals. Disclaimer · Terms · Privacy · Contact