Manhattan • Warehouse

521 West 20 St

Manhattan, NY 10011Company-ownedBBL 1006920019BIN 1012295

Updated Aug 1, 2026 · 16 sources

Year Built1913
Floors9
Units1
Building Area94,622 sqft
ZoningM1-5
ClassE1
Market Value$10.8M

521 WEST 20 ST is a property located at 521 WEST 20 ST, Manhattan, NY 10011. It is classified as a warehouse - fireproof. The building was constructed in 1913. It has 9 floors and 1 unit. The building area is 94,622 square feet on a 9,200 sqft lot. The property is zoned M1-5. The assessed market value is $10.8M. It last sold for $21.3M on Apr 29, 2022. Public records list the property as company-owned. There are 42 building permits on record (33 active). There are 72 violations on record (16 currently open). 7 docketed judgments are on record with OATH. Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

219records on file
66Energy Star

Completed in 1913, 521 West 20 St rises 9 stories over New York. Public records put it at 1 unit and 94,622 square feet of floor area, on land zoned M1-5. It is carried on the public rolls at a market value of $10.8M, and assessed for tax at $4.9M. In the 41 years its record reaches back, the lot has drawn 219 separate government filings.

The documentary life of the address leans hard toward violation: 72 of its 219 records, fully 33%, fall under that one heading. Inspection (45) and permit (42) trail well behind. 16 violations stand open against it today.

The pace is anything but even. The early decades pass in near silence; the filings cluster heavily in recent years, peaking in 2014.

On the environmental ledger, the building posts an Energy Star score of 66, with a site energy-use intensity of 43.8 kBtu per square foot. Its operations answer for roughly 478 metric tons of CO2-equivalent a year.

Read together — 33% violation, 41 years of accumulation, a parcel of New York — these scattered records compose a portrait of the address that no single page sets out to draw.

$10.8M of New York, written across 219 government filings.

Property Details

Address521 WEST 20 ST, Manhattan, NY 10011
Building TypeWarehouse - Fireproof
E1
Year Built1913
Floors9
Total Units1
Building Area94,622 sqft
Lot Size9,200 sqft
ZoningM1-5
1006920019
1012295
OwnershipCompany-owned

Assessment & Sales

$10.8M
$4.9M
$1.1M
$21.3M
Last Sale DateApr 29, 2022

Building Permits

42 on record · 33 active
ElectricalDOB NOW
PERMIT ISSUED
Filed May 13, 2026Job #M01401912-I1-EL
ElectricalDOB NOW
PERMIT ISSUED
Filed Apr 27, 2026Job #M01393087-I1-EL

REPLACE 200 AMP THREE PHASE DISCONNECT SWITCH FOR HVAC UNIT

View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Apr 27, 2026Job #M01393094-I1-EL

REHABILITATION, EXTENSIONS, NEW CIRCUITRY

View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Apr 21, 2026Job #M01389883-I1-EL
General ConstructionDOB NOW
PERMIT ISSUED
Filed Apr 16, 2026Est. cost $60KJob #M01379383-I1

+ 37 more permitsview full report

Violations

72 on record · 16 open
Judgments · 7 docketed
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Mar 31, 2021Ticket #012100192P
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2016Ticket #035133499P
FAIL TO TAKE REQUIRED MEASURES TO SECURE PUBLIC SAFWTY-UNSAFE FACADE
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2015Ticket #036026748J
FAIL SUBMIT REQUIRED REPORT OF CRIT EXAM DOCUMENTING EXTERIOR WALL
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Nov 30, 2014Ticket #011377885N
SIGN, POSTINGS, NOTICES AND INSTRUCTIONS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Nov 30, 2014Ticket #011377883J
SIGN, POSTINGS, NOTICES AND INSTRUCTIONS

+ 2 more docketed judgmentsview full report

DOB LegacyElevator
ACTIVE
Issued May 20, 2019#2353511

FAILURE TO PERFORM CATEGORY 5 INSPECTION

View this violation's full details & status history →
DOB LegacyElevator
ACTIVE
Issued May 20, 2019#2353512

FAILURE TO PERFORM CATEGORY 5 INSPECTION

View this violation's full details & status history →
DOB LegacyElevator
ACTIVE
Issued May 20, 2019#2353513

FAILURE TO PERFORM CATEGORY 5 INSPECTION

View this violation's full details & status history →
DOB LegacyACC1
ACTIVE
Issued Jan 3, 2017#2131853

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2015 CAT 1 INSP/TST

View this violation's full details & status history →
DOB LegacyACC1
ACTIVE
Issued Jan 3, 2017#2131854

VIO ISSUED TO ELEVATOR - FAIL TO CORRECT DEFECTS ON 2015 CAT 1 INSP/TST

View this violation's full details & status history →

+ 67 more violations on record — view full report

Get the Complete Report for 521 WEST 20 ST

Title history, detailed tax records, environmental data, zoning analysis, and more from 250+ government sources.

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Frequently Asked Questions

When was 521 WEST 20 ST, Manhattan built?

The building at 521 WEST 20 ST, Manhattan, NY 10011 was constructed in 1913. It is classified as a warehouse - fireproof with 9 floors and 1 unit. The building area is 94,622 sqft.

Are there building permits at 521 WEST 20 ST, Manhattan?

Yes. 521 WEST 20 ST, Manhattan, NY 10011 has 42 building permits on record, with 33 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Electrical (PERMIT ISSUED) filed May 13, 2026.

Does 521 WEST 20 ST, Manhattan have violations?

Yes. 521 WEST 20 ST, Manhattan, NY 10011 has 72 violations on record, with 16 currently open. Breakdown: 63 DOB, 9 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 521 WEST 20 ST, Manhattan have docketed judgments?

Yes. 521 WEST 20 ST, Manhattan, NY 10011 has 7 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH). A docketed judgment is an enforceable money judgment entered by OATH after a hearing on a summons issued at this property; where the respondent is the property owner it can attach to the property as a lien.

What is the property tax assessment for 521 WEST 20 ST?

521 WEST 20 ST, Manhattan, NY 10011 has an assessed market value of $10.8M and a total assessed value of $4.9M (land: $1.1M). Assessment data is from the NYC Department of Finance (DOF).

When was 521 WEST 20 ST last sold?

521 WEST 20 ST, Manhattan, NY 10011 last sold for $21.3M on Apr 29, 2022. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 521 WEST 20 ST?

521 WEST 20 ST, Manhattan, NY 10011 is zoned M1-5. Zoning data is from the NYC Department of City Planning (DCP). For detailed FAR, overlays, and development rights, view the full property report on RegWatch.

Who owns 521 WEST 20 ST?

521 WEST 20 ST, Manhattan, NY 10011 is company-owned according to public records. Ownership data is from NYC Department of Finance assessment rolls. View the current owner of record and registered contacts in the full property report on RegWatch.

How do I get a full property report for 521 WEST 20 ST?

Search 521 WEST 20 ST on RegWatch to see its public record free — violations, permits, tax records, zoning, environmental data, and more from 250+ government sources, no credit card required. A Full Analysis report adds the complete title history, owner contacts, and a downloadable PDF.

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521 WEST 20 ST, Manhattan, NY 10011 — Property Records, Permits, Violations, Tax & Zoning | RegWatch