723 ST NICHOLAS AVE, Manhattan, NY 10031 — Property Records, Permits, Violations, Tax & Zoning | RegWatch

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Year Built1907

Floors6

Units40

Building Area33,780 sqft

ZoningR6A

ClassD1

Market Value$3.7M

723 ST NICHOLAS AVE is a property located at 723 ST NICHOLAS AVE, Manhattan, NY 10031. It is classified as a elevator apartment - semi-fireproof. The building was constructed in 1907. It has 6 floors and 40 units. The building area is 33,780 square feet on a 7,411 sqft lot. The property is zoned R6A. The assessed market value is $3.7M. It last sold for $15.5M on Sep 18, 2015. Public records list the property as company-owned. There are 74 building permits on record (54 active). There are 1020 violations on record (78 currently open). 114 docketed judgments carrying $25,900 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

3,442records on file

53Energy Star

Completed in 1907, 723 St Nicholas Ave rises 6 stories over New York. Public records put it at 40 units and 33,780 square feet of floor area, on land zoned R6A. It is carried on the public rolls at a market value of $3.7M, and assessed for tax at $1.6M. In the 55 years its record reaches back, the lot has drawn 3,442 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward complaint: 1,985 of its 3,442 records, fully 58%, fall under that one heading. Violation (1,020) and enforcement (214) trail well behind. 78 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 2017.

On the environmental ledger, the building posts an Energy Star score of 53, with a site energy-use intensity of 102.5 kBtu per square foot. Its operations answer for roughly 218 metric tons of CO2-equivalent a year.

Read together — 58% complaint, 55 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.

$3.7M of New York, written across 3,442 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

Address723 ST NICHOLAS AVE, Manhattan, NY 10031

Building TypeElevator Apartment - Semi-Fireproof

Building ClassD1

Year Built1907

Floors6

Total Units40

Building Area33,780 sqft

Lot Size7,411 sqft

ZoningR6A

ConditionAverage

BBL1020610029

BIN1061395 +1 more

OwnershipCompany-owned

Assessment & Sales

Market Value$3.7M

Assessed Total$1.6M

Assessed Land$167K

Last Sale Price$15.5M

Last Sale DateSep 18, 2015

Building Permits

74 on record · 54 active

ElectricalDOB NOW

COMPLETE

Filed Nov 7, 2025Job #M01315850-I1-EL

This application is to supercede application #M01274122- Due to incorrect house number, block and lot number indicated. Also, to clear/certify/resolve violation #39148192H

View this permit's full record & inspection history →

ElectricalDOB NOW

APPROVED

Filed Nov 7, 2025Job #M01315850-P1

This application is to supercede application #M01274122- Due to incorrect house number, block and lot number indicated. Also, to clear/certify/resolve violation #39148192H

View this permit's full record & inspection history →

Cats Registration InspectionOther

CURRENT

Filed Dec 27, 2024Job #442202

View this permit's full record & inspection history →

General ConstructionDOB NOW

LOC ISSUED

Filed Apr 9, 2024Est. cost $75KJob #M00592238-I1

View this permit's full record & inspection history →

General ConstructionDOB NOW

SIGNED-OFF

Filed Dec 1, 2023Est. cost $75KJob #M00592238-I1

Initial Permit

View this permit's full record & inspection history →

+ 69 more permits — view full report

Violations

1020 on record · 78 open

Open judgment balance — docketed OATH judgments$25,900

Judgments · 114 docketed

DOB summons (OATH)JUDGMENT DOCKETED

Docketed Jul 14, 2026Balance $625Ticket #039141700N

FAILURE TO MAINTAIN BUILDING IN CODE-COMPLIANT MANNER

DOB summons (OATH)JUDGMENT DOCKETED

Docketed Apr 30, 2024Balance $6,250Ticket #039098264P

TEMP CONSTRUCTION EQUIP INSTALLATION ON SITE EXPIRED PERMIT SHED

DOB summons (OATH)JUDGMENT DOCKETED

Docketed Mar 31, 2023Balance $625Ticket #039507692X

MISCELLANEOUS VIOLATIONS

DOB summons (OATH)JUDGMENT DOCKETED

Docketed Jul 31, 2023Balance $625Ticket #035358511X

TEMPORARY CONSTRUCTION EQUIPMENT ON SITE-EXPIRED PERMIT

DOB summons (OATH)JUDGMENT DOCKETED

Docketed Oct 31, 2022Balance $6,250Ticket #035646042Z

TEMPORARY CONSTRUCTION EQUIPMENT ON SITE-EXPIRED PERMIT

+ 109 more docketed judgments — view full report

HPDClass B

CIV14 MAILED

Issued Jul 13, 2026#19079803

§ 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES IN THE ENTIRE APARTMENT LOCATED AT APT 23, 2nd STORY

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Jul 13, 2026#19079804

§ 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS THAT IS MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 23, 2nd STORY

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Jun 6, 2026#18985941

§ 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 23, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →

HPDClass B

CIV14 MAILED

Issued Jun 6, 2026#18985942

§ 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS RULES AND REGULATIONS MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 23, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →

HPDClass C

DEFECT LETTER ISSUED

Issued Jun 6, 2026#18985943

HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 23, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →

+ 1015 more violations on record — view full report

Get the Complete Report for 723 ST NICHOLAS AVE

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

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Frequently Asked Questions

When was 723 ST NICHOLAS AVE, Manhattan built?

The building at 723 ST NICHOLAS AVE, Manhattan, NY 10031 was constructed in 1907. It is classified as a elevator apartment - semi-fireproof with 6 floors and 40 units. The building area is 33,780 sqft.

Are there building permits at 723 ST NICHOLAS AVE, Manhattan?

Yes. 723 ST NICHOLAS AVE, Manhattan, NY 10031 has 74 building permits on record, with 54 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Electrical (COMPLETE) filed Nov 7, 2025.

Does 723 ST NICHOLAS AVE, Manhattan have violations?

Yes. 723 ST NICHOLAS AVE, Manhattan, NY 10031 has 1020 violations on record, with 78 currently open. Breakdown: 46 DOB, 119 ECB, 855 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 723 ST NICHOLAS AVE, Manhattan have docketed judgments?

Yes. 723 ST NICHOLAS AVE, Manhattan, NY 10031 has 114 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $25,900. 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 723 ST NICHOLAS AVE?

723 ST NICHOLAS AVE, Manhattan, NY 10031 has an assessed market value of $3.7M and a total assessed value of $1.6M (land: $167K). Assessment data is from the NYC Department of Finance (DOF).

When was 723 ST NICHOLAS AVE last sold?

723 ST NICHOLAS AVE, Manhattan, NY 10031 last sold for $15.5M on Sep 18, 2015. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 723 ST NICHOLAS AVE?

723 ST NICHOLAS AVE, Manhattan, NY 10031 is zoned R6A. 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 723 ST NICHOLAS AVE?

723 ST NICHOLAS AVE, Manhattan, NY 10031 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 723 ST NICHOLAS AVE?

Search 723 ST NICHOLAS AVE 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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723 ST NICHOLAS AVE, Manhattan, NY 10031 — Property Records, Permits, Violations, Tax & Zoning | RegWatch