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Manhattan • Warehouse

531 West 21 St

Manhattan, NY 10011Company-ownedBBL 1006930014BIN 1012309
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16 sources

Year Built1921
Floors7
Units2
Building Area91,591 sqft
ZoningM1-5
ClassE7
Market Value$18.4M

531 WEST 21 ST is a property located at 531 WEST 21 ST, Manhattan, NY 10011. It is classified as a warehouse - self-storage. The building was constructed in 1921. It has 7 floors and 2 units. The building area is 91,591 square feet on a 12,261 sqft lot. The property is zoned M1-5. The assessed market value is $18.4M. It last sold for $63.5M on Dec 16, 2021. Public records list the property as company-owned. There are 114 building permits on record (87 active). There are 121 violations on record (20 currently open). 19 docketed judgments carrying $7,755 in open balances 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

392records on file

Completed in 1921, 531 West 21 St rises 7 stories over New York. Public records put it at 2 units and 91,591 square feet of floor area, on land zoned M1-5. It is carried on the public rolls at a market value of $18.4M, and assessed for tax at $8.3M. In the 58 years its record reaches back, the lot has drawn 392 separate government filings.

The documentary life of the address leans hard toward violation: 121 of its 392 records, fully 31%, fall under that one heading. Permit (114) and enforcement (43) trail well behind. 20 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 2025.

On the environmental ledger, the building is benchmarked under Local Law 84, with a site energy-use intensity of 6.5 kBtu per square foot. Its operations answer for roughly 59 metric tons of CO2-equivalent a year.

Read together — 31% violation, 58 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.

$18.4M of New York, written across 392 government filings.

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Executive summary, compliance history, title chain & existing debt, recorded documents & agreements, owner contacts, tax detail, Use & Development, build envelope, market comps, investment metrics, deal math & stress tests, deal signals, pre-foreclosure signals, neighborhood. Downloadable PDF. One payment, no subscription.

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Sources
NYC DOBNYC HPDNYC DOFACRISNYC DCPECB/OATHNYC DEPNYC LPCNYC FDNYNYS DHCRMOCEJFEMAEPAUS CensusHUDUSGS
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Property Details

Address531 WEST 21 ST, Manhattan, NY 10011
Building TypeWarehouse - Self-Storage
E7
Year Built1921
Floors7
Total Units2
Building Area91,591 sqft
Lot Size12,261 sqft
ZoningM1-5
1006930014
1012309
OwnershipCompany-owned

Assessment & Sales

$18.4M
$8.3M
$1.1M
$63.5M
Last Sale DateDec 16, 2021

Building Permits

114 on record · 87 active
General ConstructionDOB NOW
PLAN EXAMINER REVIEW
Filed Sep 17, 2026Est. cost $60KJob #M01457384-S1
View this permit's full record & inspection history →
General ConstructionDOB NOW
PLAN EXAMINER REVIEW
Filed Sep 17, 2026Est. cost $98KJob #M01457384-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
PLAN EXAMINER REVIEW
Filed Sep 17, 2026Est. cost $15KJob #M01457384-S2
View this permit's full record & inspection history →
Suspended ScaffoldDOB NOW
PERMIT ISSUED
Filed Oct 9, 2025Job #M01294717-I1

Initial Permit

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Oct 9, 2025Job #M01294717-I1
View this permit's full record & inspection history →

+ 109 more permits — view full report

Violations

121 on record · 20 open
Open judgment balance — docketed OATH judgments$7,755
Judgments · 19 docketed
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2026Balance $1,000Ticket #014202632J
INSPECTION AND TESTING
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2026Balance $1,000Ticket #014202635P
INSPECTION AND TESTING
DEP summons (OATH)JUDGMENT DOCKETED
Docketed May 31, 2025Balance $2,600Ticket #000835416R
IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 3RD AND SUB
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2024Balance $350Ticket #048245408Z
SNOW,ICE DIRT ON SIDEWALKS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jun 30, 2024Balance $935Ticket #012146003K
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS

+ 14 more docketed judgments — view full report

SafetyElevator
ACTIVE
Issued Oct 10, 2025#VIO-FTC-VT-PER-202412-0005525

Violation Issued-Failure To File 2024 Periodic Inspection Affirmation of Correction

View this violation's full details & status history →
SafetyElevator
ACTIVE
Issued Oct 11, 2024#VIO-FTC-VT-CAT1-202312-0014080

Violation Issued-Failure To File 2023 Cat1 Test Affirmation of Correction

View this violation's full details & status history →
SafetyElevator
ACTIVE
Issued Oct 23, 2023#VIO-FTC-VT-CAT1-201812-0005816

Violation Issued-Failure To File 2018 Cat1 Test Affirmation of Correction

View this violation's full details & status history →
SafetyElevator
ACTIVE
Issued Oct 23, 2023#VIO-FTC-VT-CAT1-201912-0006393

Violation Issued-Failure To File 2019 Cat1 Test Affirmation of Correction

View this violation's full details & status history →
SafetyElevator
ACTIVE
Issued Oct 23, 2023#VIO-FTC-VT-CAT1-201812-0012093

Violation Issued-Failure To File 2018 Cat1 Test Affirmation of Correction

View this violation's full details & status history →

+ 116 more violations on record — view full report

Get the Complete Report for 531 WEST 21 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 531 WEST 21 ST, Manhattan built?

The building at 531 WEST 21 ST, Manhattan, NY 10011 was constructed in 1921. It is classified as a warehouse - self-storage with 7 floors and 2 units. The building area is 91,591 sqft.

Are there building permits at 531 WEST 21 ST, Manhattan?

Yes. 531 WEST 21 ST, Manhattan, NY 10011 has 114 building permits on record, with 87 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a General Construction (PLAN EXAMINER REVIEW) filed Sep 17, 2026.

Does 531 WEST 21 ST, Manhattan have violations?

Yes. 531 WEST 21 ST, Manhattan, NY 10011 has 121 violations on record, with 20 currently open. Breakdown: 10 DOB Safety, 61 DOB, 50 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 531 WEST 21 ST, Manhattan have docketed judgments?

Yes. 531 WEST 21 ST, Manhattan, NY 10011 has 19 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $7,755. 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 531 WEST 21 ST?

531 WEST 21 ST, Manhattan, NY 10011 has an assessed market value of $18.4M and a total assessed value of $8.3M (land: $1.1M). Assessment data is from the NYC Department of Finance (DOF).

When was 531 WEST 21 ST last sold?

531 WEST 21 ST, Manhattan, NY 10011 last sold for $63.5M on Dec 16, 2021. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 531 WEST 21 ST?

531 WEST 21 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 531 WEST 21 ST?

531 WEST 21 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 531 WEST 21 ST?

Search 531 WEST 21 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 ($15, one-time) adds the complete title history, owner contacts, and a downloadable PDF.

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531 WEST 21 ST, Manhattan, NY 10011 — Property Records, Permits, Violations, Tax & Zoning | RegWatch