Manhattan · BBL 1012780001
521 5th Avenue
New York, NY 10017 · Manhattan
Also written as: 521 5th Ave · 521 5th Avenue
Owner of record: 521 FIFTH AVENUE PROPERTY INVESTORS IV, LLC
Snapshot updated 2026-09-02 — open the app to refresh for live data.
Assessment (FY2027)
- Assessed value: $73,000,000
- Market value: $162,222,200
- Tax class: 4
Building
- Office (O4)
- Built 1929, altered 2019
- 0 residential / 61 units
- 38 floors
- Zoning: C5-3 / C5-2.5
- Lot area: 19,047 sf
- Building area: 434,152 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/521-5-avenue-1012780001
Estimates are automated, not appraisals. Disclaimer · Terms · Privacy · Contact