521 ISHAM ST, Manhattan, NY 10034 — Property Records, Permits, Violations, Tax & Zoning | RegWatch

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Year Built1930

Floors6

Units65

Building Area40,003 sqft

ZoningR7A

ClassC7

Market Value$4.5M

521 ISHAM ST is a property located at 521 ISHAM ST, Manhattan, NY 10034. It is classified as a walk-up apartment - over six families with stores. The building was constructed in 1930. It has 6 floors and 65 units. The building area is 40,003 square feet on a 10,000 sqft lot. The property is zoned R7A. The assessed market value is $4.5M. It last sold for $3.1M on Jul 1, 2009. Public records list the property as company-owned. There are 41 building permits on record (26 active). There are 255 violations on record (45 currently open). 41 docketed judgments carrying $10,772 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

953records on file

87Energy Star

Completed in 1930, 521 Isham St rises 6 stories over New York. Public records put it at 65 units and 40,003 square feet of floor area, on land zoned R7A. It is carried on the public rolls at a market value of $4.5M, and assessed for tax at $2.0M. In the 97 years its record reaches back, the lot has drawn 953 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward complaint: 512 of its 953 records, fully 54%, fall under that one heading. Violation (255) and enforcement (65) trail well behind. 45 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 posts an Energy Star score of 87, with a site energy-use intensity of 100.5 kBtu per square foot. Its operations answer for roughly 277 metric tons of CO2-equivalent a year.

Read together — 54% complaint, 97 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.

$4.5M of New York, written across 953 government filings.

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Sources

NYC DOB NYC HPD NYC DOF ACRIS NYC DCP ECB/OATH NYC DEP NYC LPC NYC FDNY NYS DHCR MOCEJ FEMA EPA US Census HUD USGS

updated Aug 1, 2026

Property Details

Address521 ISHAM ST, Manhattan, NY 10034

Building TypeWalk-Up Apartment - Over Six Families With Stores

Building ClassC7

Year Built1930

Floors6

Total Units65

Building Area40,003 sqft

Lot Size10,000 sqft

ZoningR7A

ConditionAverage

BBL1022280045

BIN1064867

OwnershipCompany-owned

Assessment & Sales

Market Value$4.5M

Assessed Total$2M

Assessed Land$80K

Last Sale Price$3.1M

Last Sale DateJul 1, 2009

Building Permits

41 on record · 26 active

Cats Registration InspectionOther

EXPIRED

Filed Dec 5, 2022Job #371514

View this permit's full record & inspection history →

General ConstructionDOB NOW

LOC ISSUED

Filed Dec 28, 2020Est. cost $1KJob #M00091358-I1

View this permit's full record & inspection history →

ElectricalDOB NOW

PERMIT ISSUED

Filed Mar 2, 2020Job #M00325003-I1-EL

NEW PANEL TO FEED NEW STOVE OUTLET, NEW RISER AND REPLACEMENT OF 110 METER WITH A 208 VOLT METER APT 5G

View this permit's full record & inspection history →

ElectricalDOB NOW

APPROVED

Filed Mar 2, 2020Job #M00325003-P1

NEW PANEL TO FEED NEW STOVE OUTLET, NEW RISER AND REPLACEMENT OF 110 METER WITH A 208 VOLT METER APT 5G

View this permit's full record & inspection history →

ElectricalDOB NOW

APPROVED

Filed Mar 2, 2020Job #M00325003-P2

NEW PANEL TO FEED NEW STOVE OUTLET, NEW RISER AND REPLACEMENT OF 110 METER WITH A 208 VOLT METER APT 5G

View this permit's full record & inspection history →

+ 36 more permits — view full report

Violations

255 on record · 45 open

Open judgment balance — docketed OATH judgments$10,772

Judgments · 41 docketed

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jun 12, 2026Balance $300Ticket #049430821N

DIRTY SIDEWALK

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Jun 8, 2026Balance $300Ticket #049430807R

DIRTY SIDEWALK

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Apr 30, 2026Balance $50Ticket #049204142X

IMPROPER DISPOSAL--BEDDING 1ST OCCURRENCE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Oct 31, 2025Balance $300Ticket #049015990X

LOOSE RUBBISH 1ST OCCURRENCE

Sanitation summons (OATH)JUDGMENT DOCKETED

Docketed Feb 28, 2025Balance $50Ticket #048447067P

FAILURE TO CLEAN 18 INCHES INTO STREET

+ 36 more docketed judgments — view full report

HPDClass C

NOV SENT OUT

Issued Jul 23, 2026#19104419

§ 27-2005, 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING SWEEPER AT DOOR IN THE ENTRANCE LOCATED AT APT 1G, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →

HPDClass C

NOTICE OF ISSUANCE SENT TO TENANT

Issued Jul 23, 2026#19104424

§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... GREATER THAN 30 SQFT AT CEILING, NORTH, WEST AND SOUTH WALLS IN THE BATHROOM LOCATED AT APT 3J, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →

HPDClass A

NOV SENT OUT

Issued Jul 23, 2026#19104449

§ 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION HEAT RISER PIPE IN THE BATHROOM LOCATED AT APT 3J, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →

HPDClass A

NOV SENT OUT

Issued Jul 23, 2026#19104451

§ 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION HEAT RISER PIPE IN THE 4th ROOM FROM NORTH LOCATED AT APT 3J, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →

HPDClass B

VIOLATION WILL BE REINSPECTED

Issued May 10, 2026#18911070

§ 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK AT CEILING IN THE BATHROOM LOCATED AT APT 4G, 5th STORY, 1st APARTMENT FROM SOUTH AT WEST , SECTION ''North''

View this violation's full details & status history →

+ 250 more violations on record — view full report

Get the Complete Report for 521 ISHAM 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 ISHAM ST, Manhattan built?

The building at 521 ISHAM ST, Manhattan, NY 10034 was constructed in 1930. It is classified as a walk-up apartment - over six families with stores with 6 floors and 65 units. The building area is 40,003 sqft.

Are there building permits at 521 ISHAM ST, Manhattan?

Yes. 521 ISHAM ST, Manhattan, NY 10034 has 41 building permits on record, with 26 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Cats Registration Inspection (EXPIRED) filed Dec 5, 2022.

Does 521 ISHAM ST, Manhattan have violations?

Yes. 521 ISHAM ST, Manhattan, NY 10034 has 255 violations on record, with 45 currently open. Breakdown: 9 DOB, 23 ECB, 223 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 521 ISHAM ST, Manhattan have docketed judgments?

Yes. 521 ISHAM ST, Manhattan, NY 10034 has 41 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $10,772. 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 ISHAM ST?

521 ISHAM ST, Manhattan, NY 10034 has an assessed market value of $4.5M and a total assessed value of $2M (land: $80K). Assessment data is from the NYC Department of Finance (DOF).

When was 521 ISHAM ST last sold?

521 ISHAM ST, Manhattan, NY 10034 last sold for $3.1M on Jul 1, 2009. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 521 ISHAM ST?

521 ISHAM ST, Manhattan, NY 10034 is zoned R7A. 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 ISHAM ST?

521 ISHAM ST, Manhattan, NY 10034 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 ISHAM ST?

Search 521 ISHAM 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 ISHAM ST, Manhattan, NY 10034 — Property Records, Permits, Violations, Tax & Zoning | RegWatch