423 Lenox Avenue
Manhattan, NY 10037BBL 1-01916-0030Map
Owner of record: Abj Sierra, LLC
423 Lenox Avenue is a walk-up apartment building built in 1910 in Manhattan, 10037. It has 9 residential units across 5 floors. The owner of record is Abj Sierra, LLC. HPD has recorded 20 housing violations here, most recently on April 10, 2025. 1 of the 20 most recent violations are still open. City tax records listed 9 rent-stabilized apartments here in 2024.
- HPD violations
- 20
- DOB violations
- 13
- ECB violations
- 1
- HPD complaints
- 64
What to know
No open immediately-hazardous violations among recent records.
Date of the most recent HPD inspection that found a problem.
No balance due on recent ECB violations.
Rent stabilization
Counts come from owners' rent-stabilization filings shown on NYC Department of Finance tax bills, as extracted by JustFix. They tell you a building has stabilized apartments, not which ones.
Think your apartment is stabilized? Request its rent history from HCR (free), then check your renewal with the renewal calculator.
Violations
Most recent first. Showing up to 50 per agency.
HPD housing violations · 20
- BHazardous
Repair or replace the smoke detector missing in the entire apartment located at apt 5b, 5th story, 1st apartment from east at south
Apr 10, 2025 · Apt 5B
Closed — Violation closed - CImmediately hazardous
Provide hot water at all hot water fixtures in the entire apartment located at apt 5b, 5th story, 1st apartment from east at south
Apr 10, 2025 · Apt 5B
Closed — Violation dismissed - BHazardous
Properly repair or replace the broken or defective intercom from the building entrance to the panel at north wall in the 1st room from east located at apt 5b, 5th story, 1st apartment from east at south
Apr 10, 2025 · Apt 5B
Closed — Violation dismissed - BHazardous
Properly repair or replace the broken or defective light fixture at the ceiling in the kitchen located at apt 5b, 5th story, 1st apartment from east at south
Apr 10, 2025 · Apt 5B
Closed — Violation closed - CImmediately hazardous
Abate the infestation consisting of roaches in the entire apartment located at apt 5b, 5th story, 1st apartment from east at south
Apr 10, 2025 · Apt 5B
Closed — Violation closed - BHazardous
Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 5b, 5th story, 1st apartment from east at south
Apr 10, 2025 · Apt 5B
Closed — Violation closed - CImmediately hazardous
Provide ready access to buildings heating system boiler room door locked at cellar
Apr 10, 2025
Closed — Violation closed - ANon-hazardous
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
Sep 25, 2018
Closed — Violation dismissed - ANon-hazardous
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
Sep 25, 2018
Closed — Violation dismissed - ANon-hazardous
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
Sep 25, 2018
Closed — Violation dismissed
Show 10 more ↓
- BHazardous
Provide adequate supply of cold water for the fixtures .. in the entire apartment located at apt 5b, 5th story, 1st apartment from west at north
Feb 28, 2018 · Apt 5B
Closed — Violation dismissed - BHazardous
Provide adequate supply of hot water for the fixtures .. in the entire apartment located at apt 5b, 5th story, 1st apartment from west at north
Feb 28, 2018 · Apt 5B
Closed — Violation dismissed - BHazardous
Repair the leaky and/or defective faucets at bathtub in the bathroom located at apt 5b, 5th story, apartment at south
Feb 4, 2018 · Apt 5B
Closed — Violation dismissed - CImmediately hazardous
Remove the illegal fastening consisting of an unacceptable electromagnetic locking device installed at the building entrance door at public hall, 1st story
Sep 11, 2016
Closed — Violation dismissed - BHazardous
Provide security in the event of a power outage by means of an acceptable mechanical heavy duty lock and latch set at the building entrance door. at public hall, 1st story
Sep 11, 2016
Closed — Violation dismissed - BHazardous
Trace and repair the source and abate the nuisance consisting of mold ... 16 square feet at west wall in the 4th room from east located at apt 4a, 4th story, 1st apartment from west at north
Aug 1, 2013 · Apt 4A
Open — Nov sent out - ANon-hazardous
Properly repair the broken or defective bell-buzzer/intercom system in the foyer located at apt 4a, 4th story, 1st apartment from west at north
Aug 1, 2013 · Apt 4A
Closed — Violation dismissed - BHazardous
Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling and west wall in the 4th room from east located at apt 4a, 4th story, 1st apartment from west at north
Aug 1, 2013 · Apt 4A
Closed — Violation dismissed - BHazardous
Trace and repair the source and abate the nuisance consisting of mold ... approx. 20 square feet at all walls and ceiling inside the closet in the 4th room from east located at apt 4a, 4th story, 1st apartment from west at north
Jul 17, 2013 · Apt 4A
Closed — Violation dismissed - BHazardous
Properly repair the broken or defective bell-buzzer system in the foyer located at apt 4a, 4th story, 1st apartment from west at north
Jul 17, 2013 · Apt 4A
Closed — Violation dismissed
DOB building violations · 13
- Low pressure boiler boiler required
Lblvio-low pressure boiler boiler required
Dec 31, 2009
Dob violation - dismissed - Immediate emergency anythingoptional
Imegncy-immediate emergency anythingoptional
Dec 12, 2008
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 31, 2005
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Jan 31, 2005
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 26, 2002
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 27, 2001
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 7, 2000
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 16, 1999
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
May 4, 1998
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Sep 16, 1997
Dob violation - dismissed
Show 3 more ↓
- Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Aug 29, 1995
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 18, 1994
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Mar 18, 1993
Dob violation - dismissed
ECB violations · 1
- Non-hazardous
Failure to past permit for owrk at prmises. wrok in progress on all 5 floor remedy: post permit.
May 10, 2002
Resolve
Complaints
- Heat/hot water
Apartment only
Apr 10, 2025 · Apt 5B
Close - Heat/hot water
Apartment only
Apr 8, 2025 · Apt 5B
Close - Heat/hot water
Apartment only
Apr 13, 2024 · Apt 5B
Close - Appliance
Electric/gas range
Jun 27, 2023 · Apt 1A
Close - Plumbing
Radiator
Oct 15, 2018 · Apt BLDG
Close - Electric
No lighting
Oct 15, 2018 · Apt BLDG
Close - Safety
Fire escape
Oct 14, 2018 · Apt BLDG
Close - Flooring/stairs
Floor
Oct 9, 2018 · Apt BLDG
Close - Electric
Outlet/switch
Oct 7, 2018 · Apt BLDG
Close - Door/window
Door frame
Oct 5, 2018 · Apt BLDG
Close
Show 40 more ↓
- Paint/plaster
Window/frame
Oct 5, 2018 · Apt BLDG
Close - Electric
Outlet/switch
Sep 28, 2018 · Apt BLDG
Close - Plumbing
Radiator
Sep 25, 2018 · Apt BLDG
Close - Paint/plaster
Window/frame
Sep 23, 2018 · Apt BLDG
Close - Flooring/stairs
Floor
Sep 12, 2018 · Apt BLDG
Close - Flooring/stairs
Floor
Sep 11, 2018 · Apt BLDG
Close - Paint/plaster
Window/frame
Sep 3, 2018 · Apt BLDG
Close - Plumbing
Radiator
Aug 31, 2018 · Apt BLDG
Close - Door/window
Window frame
Aug 30, 2018 · Apt BLDG
Close - Paint/plaster
Radiator
Aug 24, 2018 · Apt BLDG
Close - Electric
Outlet/switch
Aug 21, 2018 · Apt BLDG
Close - Safety
Fire escape
Aug 20, 2018 · Apt BLDG
Close - Electric
Lighting
Aug 14, 2018 · Apt BLDG
Close - Door/window
Window frame
Aug 12, 2018 · Apt BLDG
Close - Safety
Fire escape
Aug 10, 2018 · Apt BLDG
Close - Plumbing
Radiator
Aug 5, 2018 · Apt BLDG
Close - Door/window
Window frame
Aug 4, 2018 · Apt BLDG
Close - Flooring/stairs
Floor
Jul 31, 2018 · Apt BLDG
Close - Paint/plaster
Window/frame
May 11, 2018 · Apt BLDG
Close - Paint/plaster
Window/frame
May 4, 2018 · Apt BLDG
Close - Plumbing
Water supply
Feb 26, 2018 · Apt 5B
Close - Plumbing
Water supply
Jan 12, 2018 · Apt 5B
Close - Plumbing
Water supply
Dec 23, 2017 · Apt 5B
Close - Plumbing
Water supply
Sep 29, 2016 · Apt 5A
Close - Plumbing
Bathtub/shower
Sep 6, 2016 · Apt 5A
Close - Plumbing
Bathtub/shower
Sep 6, 2016 · Apt 5A
Close - Plumbing
Water supply
Sep 6, 2016 · Apt 5A
Close - Unsanitary condition
Garbage/recycling storage
Sep 2, 2016 · Apt BLDG
Close - Unsanitary condition
Garbage/recycling storage
Sep 2, 2016 · Apt BLDG
Close - Plumbing
Water supply
Aug 23, 2016 · Apt 5A
Close - Plumbing
Water supply
Jun 13, 2016 · Apt 5A
Close - Unsanitary condition
Garbage/recycling storage
May 16, 2016 · Apt BLDG
Close - Plumbing
Water supply
May 8, 2016 · Apt 5A
Close - Appliance
Electric/gas range
Jul 21, 2015 · Apt 4A
Close - Heat/hot water
Entire building
Mar 2, 2015 · Apt 5A
Close - Heat/hot water
Entire building
Nov 23, 2014 · Apt 1A
Close - Heat/hot water
Entire building
Oct 20, 2014 · Apt 2B
Close - Heating
Heat related
Jan 4, 2014 · Apt 3A
Close - General
Doors
Sep 11, 2013 · Apt 4A
Close - General
Mold
Jul 16, 2013 · Apt 4A
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C7)
- Year built
- 1910
- Floors
- 5
- Residential units
- 9
- Building area
- 7,395 ft²
- Lot area
- 1,875 ft²
- Zoning
- R7-2
- Community board
- 110
- Council district
- 9
- Block / lot
- 1916 / 30
- Assessed value
- $580,950
- Landmark / historic district
- No
HPD registration #116486, last renewed Oct 15, 2025.
Questions about 423 Lenox Avenue
Who owns 423 Lenox Avenue?
The owner of record in NYC Department of City Planning PLUTO data is Abj Sierra, LLC.
Does 423 Lenox Avenue have violations?
Yes. NYC HPD has recorded 20 housing violations at this property.
Is 423 Lenox Avenue rent stabilized?
NYC Department of Finance tax bills listed 9 rent-stabilized units here in 2024 (about 100% of its 9 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 423 Lenox Avenue built?
City records list 1910 as the year it was built.
How many apartments are in 423 Lenox Avenue?
It has 9 residential units and 10 units in total.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.