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621 West 51 Street

Manhattan, NY 10019BBL 1-01099-0020Map

Owner of record: Key 621 West 51st Street Realty Company LLC

621 West 51 Street is a walk-up apartment building built in 1901 in Manhattan, 10019. It has 8 residential units across 4 floors. The owner of record is Key 621 West 51st Street Realty Company LLC. HPD has recorded 53 housing violations here, most recently on April 29, 2026. 37 of the 50 most recent violations are still open.

HPD violations
53
DOB violations
8
ECB violations
0
HPD complaints
19

What to know

Concern
5 open Class C

Immediately hazardous issues among recent violations are still open.

Good
Last violation Apr 29, 2026

Date of the most recent HPD inspection that found a problem.

Good
No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

No rent-stabilized units in 2018–2024 tax bills

Some apartments can still be regulated. Use the rent-stabilized checker or request the rent history from HCR.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 53

  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Apr 29, 2026

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Nov 17, 2025

    Closed — Violation dismissed
  • C

    Replace or repair the self-closing the doors that is missing or defective hinges in the entrance located at apt 2w, 3rd story, 1st apartment from north at east

    Jun 13, 2025 · Apt 2W

    Open — Nov sent out
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Jun 4, 2025

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Nov 22, 2024

    Closed — Violation dismissed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Open — Nov sent out
  • B

    Trace and repair the source and abate the visible mold condition... less than 10 square feet at ceiling in the bathroom located at apt 2w, 3rd story, 1st apartment from west at north original violation 17119560 issued 17-jul-24 has been upgraded to class b per administrative code §27-2017.3a(3)(a) or (b).

    Jul 17, 2024 · Apt 2W

    Open — Defect letter issued
  • B

    Properly repair with similar material the broken or defective metal cornice at building front

    Jul 17, 2024

    Open — Nov sent out
  • A

    And dept. rules and regulations. scrape and remove rust scales and paint with 2 coats of paint all stories and all components fire escape at building front

    Jul 17, 2024

    Open — Nov sent out
  • B

    Repair the leaky and/or defective faucets at shower stall in the bathroom located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Open — Nov sent out
Show 40 more ↓
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at north wall in the bathroom located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Open — Nov sent out
  • B

    Properly repair with similar material the broken or defective caulking around shower stall in the bathroom located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Open — Nov sent out
  • B

    Properly repair with similar material the broken or defective porcelain enamel by method of reglazing at shower stall in the bathroom located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Open — Nov sent out
  • A

    § 300 m/d law file plans and application and legalize the following alteration or restore to the legal condition existing prior to the making of said alteration suspended ceiling in the 1st room from north at west located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Open — Nov sent out
  • A

    Trace and repair the source and abate the visible mold condition... less than 10 square feet at ceiling in the bathroom located at apt 2w, 3rd story, 1st apartment from west at north

    Jul 17, 2024 · Apt 2W

    Closed — Violation closed
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Apr 1, 2024

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Nov 15, 2023

    Closed — Violation dismissed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt 2w, 2nd story

    Jul 13, 2023 · Apt 2W

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges in the entrance located at apt 1w, 1st story

    Jul 13, 2023 · Apt 1W

    Closed — Violation closed
  • B

    Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt 2w, 2nd story, 1st apartment from west at north

    Jul 13, 2023 · Apt 2W

    Open — Nov sent out
  • B

    Repair or replace the smoke detector defective in the entire apartment located at apt 2w, 2nd story, 1st apartment from west at north

    Jul 13, 2023 · Apt 2W

    Open — Nov sent out
  • A

    § 300 m/d law file plans and application and legalize the following alteration or restore to the legal condition existing prior to the making of said alteration suspended ceiling in the entire apartment located at apt 2w, 2nd story, 1st apartment from west at north

    Jul 13, 2023 · Apt 2W

    Open — Nov sent out
  • B

    Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 1w, 1st story, 1st apartment from south at west

    Jul 13, 2023 · Apt 1W

    Open — Nov sent out
  • B

    Repair or replace the smoke detector missing in the entire apartment located at apt 1w, 1st story, 1st apartment from south at west

    Jul 13, 2023 · Apt 1W

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the bathroom located at apt 1w, 1st story, 1st apartment from south at west

    Jul 13, 2023 · Apt 1W

    Open — Nov sent out
  • A

    Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the bathroom located at apt 1w, 1st story, 1st apartment from south at west

    Jun 5, 2023 · Apt 1W

    Open — Nov sent out
  • B

    Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 1w, 1st story, 1st apartment from south at west

    Jun 5, 2023 · Apt 1W

    Open — Nov sent out
  • B

    Repair or replace the smoke detector missing. in the entire apartment located at apt 1w, 1st story, 1st apartment from south at west

    Jun 5, 2023 · Apt 1W

    Open — Nov sent out
  • C

    Replace or repair the self-closing doors that is missing or defective spring hinges in the entrance located at apt 1w, 1st story, 1st apartment from south at west

    Jun 5, 2023 · Apt 1W

    Open — Nov sent out
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Mar 16, 2023

    Open — Nov sent out
  • C

    Repair the broken or defective plastered surfaces and paint in a uniform color at the ceiling in the bathroom located at apt 2w, 2nd story, 1st apartment from west at north

    Feb 15, 2023 · Apt 2W

    Open — Nov sent out
  • A

    § 300 m/d law file plans and application and legalize the following alteration or restore to the legal condition existing prior to the making of said alteration acoustic ceiling in the 1st room from north located at apt 2w, 2nd story, 1st apartment from west at north

    Feb 15, 2023 · Apt 2W

    Open — Nov sent out
  • C

    Replace or repair the self-closing doors that is missing or defective ... in the entrance located at apt 2w, 2nd story, 1st apartment from west at north

    Feb 15, 2023 · Apt 2W

    Closed — Violation closed
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Feb 16, 2022

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Feb 16, 2022

    Closed — Violation dismissed
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    Apr 1, 2021

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Apr 1, 2021

    Closed — Violation dismissed
  • A

    Post a proper notice of smoke detector requirements, in a form approved by the commissioner, at or near the mail box at or near mailbox at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • A

    Post a proper notice of carbon monoxide detecting device requirements, in a form approved by the commissioner, in a common area of a class a multiple dwelling near inspection certificate or provide notice to tenants in a private dwelling. at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • C

    Post notice, in form approved by the department, stating the name and location of the person designated by the owner to have key to buildings heating system at or near mailbox at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • A

    Post and maintain a proper sign on wall of entrance story showing the registration number assigned by the department and the address of the building. at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • A

    Post and maintain a proper notice on wall of the entrance story in english and spanish on the availability of the agencys housing information guide. a sample notice can be found at www.nyc.gov/hpd. at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • A

    Post, in a form approved by the commissioner, and maintain a notice in a common area of the building regarding the procedures that should be followed when a gas leak is suspected at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • A

    Post sign on wall of entrance story bearing name, address including apartment number if any, and telephone number of superintendent, janitor or housekeeper. at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • A

    § 329, m/d law and dept. rules and regs. provide a completed certificate of inspection visits in a proper frame at or near mailboxes, bottom edge of frame between 48-62 inches above floor frame missing at public hall, 1st story

    Jul 27, 2020

    Open — Nov sent out
  • B

    Properly repair with similar material the broken or defective concrete lentil above window 1st window from west at front of building , 3rd story

    Jul 27, 2020

    Open — Nov sent out
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Oct 25, 2019

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Oct 10, 2018

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Oct 26, 2016

    Closed — Violation dismissed
  • I

    And is therefore subject to civil penalties, prohibited from certifying violations, and denied the right to recover possession of premises for nonpayment of rent until a valid registration statement is filed.

    Oct 2, 2015

    Closed — Violation dismissed

DOB building violations · 8

  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2016 inspection report

    Apr 6, 2018

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2015 inspection report

    Feb 24, 2017

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2014 inspection report

    Oct 1, 2015

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2013 inspection report

    Mar 3, 2015

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued for failure to file annual boiler 2012 inspection report

    May 15, 2014

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Aug 29, 1995

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Mar 18, 1994

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Mar 18, 1993

    Dob violation - active

ECB violations · 0

No ECB violations on record

Complaints

  • Unsanitary condition

    Mold

    Jul 11, 2024 · Apt 2W

    Close
  • Unsanitary condition

    Pests

    Jul 7, 2023 · Apt 2E

    Close
  • Unsanitary condition

    Pests

    Jun 29, 2023 · Apt 2W

    Close
  • Unsanitary condition

    Pests

    Jun 5, 2023 · Apt 2W

    Close
  • Water leak

    Slow leak

    Jun 4, 2023 · Apt 1W

    Close
  • Unsanitary condition

    Pests

    Jun 4, 2023 · Apt 1W

    Close
  • Plumbing

    Toilet

    Jun 4, 2023 · Apt 1W

    Close
  • General

    Ventilation system

    Jun 4, 2023 · Apt 1W

    Close
  • Unsanitary condition

    Mold

    Jun 4, 2023 · Apt 1W

    Close
  • Unsanitary condition

    Mold

    Jun 2, 2023 · Apt 1W

    Close
Show 9 more ↓
  • Unsanitary condition

    Pests

    May 14, 2023 · Apt 1W

    Close
  • Unsanitary condition

    Mold

    Feb 12, 2023 · Apt 2W

    Close
  • Unsanitary condition

    Mold

    Feb 8, 2023 · Apt 1W

    Close
  • Water leak

    Heavy flow

    Feb 8, 2023 · Apt 1W

    Close
  • Paint/plaster

    Ceiling

    Feb 8, 2023 · Apt 1W

    Close
  • Plumbing

    Water supply

    Feb 5, 2023 · Apt 3W

    Close
  • Heat/hot water

    Entire building

    Jul 25, 2020 · Apt BLDG

    Close
  • Heat/hot water

    Apartment only

    Mar 19, 2020 · Apt 3W

    Close
  • Electric

    Power outage

    Mar 28, 2016 · Apt 3W

    Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type
Walk-up apartment building (C4)
Year built
1901
Floors
4
Residential units
8
Building area
5,040 ft²
Lot area
2,510 ft²
Zoning
M2-4
Community board
104
Council district
3
Block / lot
1099 / 20
Assessed value
$1,769,400
Landmark / historic district
No

HPD registration #103913, last renewed Jul 8, 2022.

Questions about 621 West 51 Street

Who owns 621 West 51 Street?

The owner of record in NYC Department of City Planning PLUTO data is Key 621 West 51st Street Realty Company LLC.

Does 621 West 51 Street have violations?

Yes. NYC HPD has recorded 53 housing violations at this property.

Is 621 West 51 Street rent stabilized?

No rent-stabilized units appear in its 2018–2024 tax bills. Individual apartments can still be regulated, so request the rent history from NYS Homes and Community Renewal if unsure.

When was 621 West 51 Street built?

City records list 1901 as the year it was built.

How many apartments are in 621 West 51 Street?

It has 8 residential units.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.