601 Kosciuszko Street
Brooklyn, NY 11221BBL 3-01604-0045Map
Owner of record: Nu World Builders LLC
601 Kosciuszko Street is a walk-up apartment building built in 1931 in Brooklyn, 11221. It has 16 residential units across 4 floors. The owner of record is Nu World Builders LLC. HPD has recorded 12 housing violations here, most recently on May 5, 2026. 1 of the 12 most recent violations are still open. City tax records listed 16 rent-stabilized apartments here in 2024.
- HPD violations
- 12
- DOB violations
- 11
- ECB violations
- 2
- HPD complaints
- 23
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 · 12
- ANon-hazardous
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.
May 5, 2026
Closed — Violation dismissed - ANon-hazardous
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 10, 2025
Closed — Violation dismissed - ANon-hazardous
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 10, 2024
Closed — Violation dismissed - ANon-hazardous
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 23, 2023
Closed — Violation dismissed - IInformation / order
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 10, 2022
Closed — Violation dismissed - ANon-hazardous
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 25, 2022
Closed — Violation dismissed - BHazardous
Repair or replace the carbon monoxide detecting device(s). missing located at apt 2a, 2nd story, 2nd apartment from east at south
Jul 23, 2021 · Apt 2A
Open — Nov sent out - ANon-hazardous
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 9, 2021
Closed — Violation dismissed - IInformation / order
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 18, 2018
Closed — Violation dismissed - CImmediately hazardous
Provide adequate supply of hot water for the fixtures .. in the entire apartment located at apt 2c, 2nd story
Sep 26, 2017 · Apt 2C
Closed — Violation closed
Show 2 more ↓
- BHazardous
Fire escape defective. adjust the dropladder so that it will slide easily in the guide rods front of building at fire escape
Sep 23, 2014
Closed — Violation closed - BHazardous
Repair or replace the carbon monoxide detecting device(s). defective in the entire apartment located at apt 4d, 4th story, 2nd apartment from west at north
May 23, 2014 · Apt 4D
Closed — Violation closed
DOB building violations · 11
- Low pressure boiler boiler required
Violation issued-failure to file 2024 external low pressure inspection
Nov 14, 2025
Dob violation - active - Low pressure boiler boiler required
Violation issued-failure to file 2018 external low pressure inspection
Jun 20, 2023
Dob violation - active - Low pressure boiler boiler required
Violation issued for failure to file annual boiler 2016 inspection report
Apr 6, 2018
Dob violation - dismissed - Boilers boiler required
Ll6291-local law 62/91 - boilers boiler required
Feb 27, 2001
Dob violation - dismissed - Construction other optional
C-construction other optional
Feb 20, 2001
Dob violation - active - 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 - Plumbing none
P-plumbing none
Apr 26, 1990
Dob violation - dismissed
Show 1 more ↓
- Plumbing none
P-plumbing none
Apr 26, 1990
Dob violation - dismissed
ECB violations · 2
- Non-hazardous
Altered building occupied without a valid certificate of occupancy.temporary certificate of occupancy #300442420 issued 6-16-2000 for 90 days expired 9-16-2000.remedy:obtain valid certificate of occupancy.
Feb 20, 2001
Resolve - Non-hazardous
40,b4a
Dec 27, 1995
Resolve
Complaints
- Heat/hot water
Entire building
Jan 27, 2026 · Apt BLDG
Close - Heat/hot water
Entire building
Jan 8, 2025 · Apt BLDG
Close - Unsanitary condition
Pests
Jul 31, 2024 · Apt 3C
Close - Heat/hot water
Apartment only
Dec 25, 2019 · Apt IC
Close - Heat/hot water
Entire building
Sep 28, 2017 · Apt 2A
Close - Heat/hot water
Entire building
Sep 28, 2017 · Apt BLDG
Close - Heat/hot water
Entire building
Sep 26, 2017 · Apt BLDG
Close - Heat/hot water
Entire building
Sep 26, 2017 · Apt 2B
Close - Heat/hot water
Entire building
Sep 25, 2017 · Apt BLDG
Close - Heat/hot water
Entire building
Sep 25, 2017 · Apt BLDG
Close
Show 13 more ↓
- Heat/hot water
Entire building
Sep 25, 2017 · Apt BLDG
Close - Heat/hot water
Entire building
Sep 22, 2017 · Apt 2B
Close - Plumbing
Water supply
Sep 20, 2017 · Apt 2B
Close - Heating
Heat related
Jun 16, 2008 · Apt BLDG
Close - Heating
Heat related
Jun 13, 2008 · Apt NA
Close - Heating
Heat related
Feb 26, 2007 · Apt 2C
Close - Heating
Heat related
Feb 19, 2007 · Apt 1A
Close - Heating
Heat related
Feb 19, 2007 · Apt 2C
Close - Heating
Heat related
Feb 19, 2007 · Apt 4D
Close - Heating
Heat related
Feb 18, 2007 · Apt 2A
Close - Heating
Heat related
Feb 17, 2007 · Apt 3D
Close - Heating
Heat related
Feb 17, 2007 · Apt 2C
Close - Nonconst
Vermin
Sep 11, 2004 · Apt 4C
Close
Sales history
No recorded sales in our data
Building details
- Building type
- Walk-up apartment building (C1)
- Year built
- 1931
- Floors
- 4
- Residential units
- 16
- Building area
- 13,560 ft²
- Lot area
- 5,000 ft²
- Zoning
- R6B
- Community board
- 303
- Council district
- 36
- Block / lot
- 1604 / 45
- Assessed value
- $307,800
- Landmark / historic district
- No
HPD registration #318094, last renewed Aug 24, 2025.
Questions about 601 Kosciuszko Street
Who owns 601 Kosciuszko Street?
The owner of record in NYC Department of City Planning PLUTO data is Nu World Builders LLC.
Does 601 Kosciuszko Street have violations?
Yes. NYC HPD has recorded 12 housing violations at this property.
Is 601 Kosciuszko Street rent stabilized?
NYC Department of Finance tax bills listed 16 rent-stabilized units here in 2024 (about 100% of its 16 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.
When was 601 Kosciuszko Street built?
City records list 1931 as the year it was built.
How many apartments are in 601 Kosciuszko Street?
It has 16 residential units.
Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.