520 4 Avenue, Brooklyn is a residential building in Park Slope, Brooklyn, New York City. As of June 8, 2026, this building has 44 open HPD violations: 3 Class A, 26 Class B, and 15 Class C (immediately hazardous). In the last 12 months, 66 complaints have been filed against this building via NYC 311. The most common complaint type is HEAT/HOT WATER. The building's overall risk rating is CRITICAL RISK. Data source: NYC Open Data, updated daily. Last verified: June 8, 2026.

520 4 Avenue, Brooklyn

📍 Park Slope, Brooklyn 🔨 Built 1931 🏢 8 units 🏷️ Class C1
Residential
CRITICAL RISK

Safety Rating: Immediately hazardous — Immediately hazardous violations — serious concerns.

311 Complaint Summary

0
Last 30 Days
8
Last 90 Days
66
Last 365 Days
✅ Complaints are down 65% compared to the previous 6 months.
Complaint Types (Last 12 Months)
HEAT/HOT WATER
15(24%)
UNSANITARY CONDITION
10(16%)
PLUMBING
9(15%)
PAINT/PLASTER
9(15%)
DOOR/WINDOW
7(11%)
GENERAL
5(8%)
ELECTRIC
4(6%)
SAFETY
3(5%)
📅 Monthly Activity Heatmap (Last 12 Months)
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun

HPD Housing Violations

3 Class A
26 Class B
15 Class C
Class A § 27-2005 ADM CODE REPLACE WITH NEW THE MISSING ESCUTCHEON PLATE AT HEAT RISER AT CEILING AND AT FLOOR IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-24

Violation ID: #18740854

Current Status: Open

Date Issued: 2026-03-24T00:00:00.000

Description: § 27-2005 ADM CODE REPLACE WITH NEW THE MISSING ESCUTCHEON PLATE AT HEAT RISER AT CEILING AND AT FLOOR IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class A § 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION RISER IN THE BATHROOM LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732476

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE PAINT METAL IN ACCORDANCE WITH DEPT. REGULATION RISER IN THE BATHROOM LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

Class A § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT CEILING AND WEST WALL IN THE BATHROOM LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732474

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT CEILING AND WEST WALL IN THE BATHROOM LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2026 ADM CODE REPAIR THE FLUSHING APPARATUS AND MAINTAIN SAME SO AS TO FLUSH EFFECTIVELY THE WATER CLOSET FLUSH HANDLE IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-24

Violation ID: #18740853

Current Status: Open

Date Issued: 2026-03-24T00:00:00.000

Description: § 27-2026 ADM CODE REPAIR THE FLUSHING APPARATUS AND MAINTAIN SAME SO AS TO FLUSH EFFECTIVELY THE WATER CLOSET FLUSH HANDLE IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-24

Violation ID: #18740850

Current Status: Open

Date Issued: 2026-03-24T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 HMC: REFIT DOOR TO BOILER ROOM AT BASEMENT
2026-03-20

Violation ID: #18732436

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 HMC: REFIT DOOR TO BOILER ROOM AT BASEMENT

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING, WEST AND NORTH WALLS IN THE BATHROOM LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732475

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING, WEST AND NORTH WALLS IN THE BATHROOM LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 HMC: REFIT ENTRANCE DOOR IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732467

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 HMC: REFIT ENTRANCE DOOR IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 HMC: REFIT EXIT DOOR TO REAR YARD AT BASEMENT
2026-03-20

Violation ID: #18732440

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 HMC: REFIT EXIT DOOR TO REAR YARD AT BASEMENT

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732462

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 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 ADDITIONAL NEEDED IN THE ENTIRE APARTMENT LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732452

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 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 ADDITIONAL NEEDED IN THE ENTIRE APARTMENT LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 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 ADDITIONAL NEEDED IN THE ENTIRE APARTMENT LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732453

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 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 ADDITIONAL NEEDED IN THE ENTIRE APARTMENT LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE LATCH AT APARTMENT ENTRANCE DOOR IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732458

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE LATCH AT APARTMENT ENTRANCE DOOR IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE VINYL FLOOR TILES IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732459

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE VINYL FLOOR TILES IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732463

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK CEILING IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732468

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2026, 2027 HMC: PROPERLY REPAIR THE SOURCE AND ABATE THE EVIDENCE OF A WATER LEAK CEILING IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732469

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING NORTH AND SOUTH WALLS IN THE 1st ROOM FROM EAST LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732470

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING NORTH AND SOUTH WALLS IN THE 1st ROOM FROM EAST LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE COUNTER BALANCE AT UPPER WINDOW SASH IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-02-10

Violation ID: #18633714

Current Status: Open

Date Issued: 2026-02-10T00:00:00.000

Description: § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE COUNTER BALANCE AT UPPER WINDOW SASH IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class B § 27-2040 ADM CODE PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING AT BUILDING FRONT
2025-11-07

Violation ID: #18354102

Current Status: Open

Date Issued: 2025-11-07T00:00:00.000

Description: § 27-2040 ADM CODE PROVIDE ADEQUATE LIGHTING AT OR NEAR THE OUTSIDE OF THE FRONT ENTRANCEWAY OF THE BUILDING AND KEEP SAME BURNING FROM SUNSET EVERY DAY TO SUNRISE ON THE DAY FOLLOWING AT BUILDING FRONT

Class B § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE SPRING BALANCE WINDOW UPPER SASH AT NORTH WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST
2025-09-30

Violation ID: #18263607

Current Status: Open

Date Issued: 2025-09-30T00:00:00.000

Description: § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE SPRING BALANCE WINDOW UPPER SASH AT NORTH WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST

Class B § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT NORTH WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST
2025-09-30

Violation ID: #18263608

Current Status: Open

Date Issued: 2025-09-30T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT NORTH WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM NORTH AT EAST

Class B § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD WINDOW TRIM AT WEST WALL IN THE BATHROOM LOCATED AT APT 1, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH
2025-06-27

Violation ID: #18073783

Current Status: Open

Date Issued: 2025-06-27T00:00:00.000

Description: § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD WINDOW TRIM AT WEST WALL IN THE BATHROOM LOCATED AT APT 1, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROX., 1SQUARE FOOT IN THE BATHROOM LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 17041623 ISSUED 11-JUN-24 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b).
2024-06-11

Violation ID: #17347268

Current Status: Open

Date Issued: 2024-06-11T00:00:00.000

Description: § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROX., 1SQUARE FOOT IN THE BATHROOM LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 17041623 ISSUED 11-JUN-24 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b).

Class B § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE (INOPERATIVE) ELECTRICAL LIGHT FIXTURE AT THE CEILING IN THE 2nd ROOM FROM EAST LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH
2024-06-11

Violation ID: #17041629

Current Status: Open

Date Issued: 2024-06-11T00:00:00.000

Description: § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE (INOPERATIVE) ELECTRICAL LIGHT FIXTURE AT THE CEILING IN THE 2nd ROOM FROM EAST LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE CERAMIC TILES ON THE WEST WALL IN THE BATHROOM LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH
2024-06-11

Violation ID: #17041624

Current Status: Open

Date Issued: 2024-06-11T00:00:00.000

Description: § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE CERAMIC TILES ON THE WEST WALL IN THE BATHROOM LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE KITCHEN LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH
2024-06-11

Violation ID: #17041622

Current Status: Open

Date Issued: 2024-06-11T00:00:00.000

Description: § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOOD FLOOR IN THE KITCHEN LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH

Class B § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROXIMATELY 4 SQ FT AT WEST WALL. IN THE BATHROOM LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH ORIGINAL VIOLATION 16746939 ISSUED 16-MAR-24 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b).
2024-03-16

Violation ID: #17124216

Current Status: Open

Date Issued: 2024-03-16T00:00:00.000

Description: § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROXIMATELY 4 SQ FT AT WEST WALL. IN THE BATHROOM LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH ORIGINAL VIOLATION 16746939 ISSUED 16-MAR-24 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b).

Class B § 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). THAT IS DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST
2024-01-15

Violation ID: #16592979

Current Status: Open

Date Issued: 2024-01-15T00:00:00.000

Description: § 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). THAT IS DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST

Class C § 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING CONSISTING OF (2) PADLOCKABLE SLIDE BOLTS AT HATCH TO ROOF AT SCUTTLE LADDER AT PUBLIC HALL, 4th STORY
2026-03-20

Violation ID: #18732435

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING CONSISTING OF (2) PADLOCKABLE SLIDE BOLTS AT HATCH TO ROOF AT SCUTTLE LADDER AT PUBLIC HALL, 4th STORY

Class C § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDANT MATERIAL AT CEILING AT BASEMENT
2026-03-20

Violation ID: #18732450

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDANT MATERIAL AT CEILING AT BASEMENT

Class C § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE EXIT DOOR TO REAR YARD AT BASEMENT
2026-03-20

Violation ID: #18732446

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE EXIT DOOR TO REAR YARD AT BASEMENT

Class C § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE LATCH AT APARTMENT ENTRANCE DOOR IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732456

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE LATCH AT APARTMENT ENTRANCE DOOR IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class C § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT 2ND EGRESS DOOR IN THE 1st ROOM FROM EAST LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732471

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT 2ND EGRESS DOOR IN THE 1st ROOM FROM EAST LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class C § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE DOOR AND FRAME AT DOOR TO BOILER ROOM AT BASEMENT
2026-03-20

Violation ID: #18732437

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE DOOR AND FRAME AT DOOR TO BOILER ROOM AT BASEMENT

Class C § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE COUNTER BALANCES AT UPPER SASH AT 1ST WINDOW FROM SOUTH AT WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-03-20

Violation ID: #18732465

Current Status: Open

Date Issued: 2026-03-20T00:00:00.000

Description: § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE COUNTER BALANCES AT UPPER SASH AT 1ST WINDOW FROM SOUTH AT WEST WALL IN THE KITCHEN LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class C § 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF SCALDING HOT WATER ABOVE 130 DEGREES IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM SOUTH AT WEST
2026-03-17

Violation ID: #18718419

Current Status: Open

Date Issued: 2026-03-17T00:00:00.000

Description: § 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF SCALDING HOT WATER ABOVE 130 DEGREES IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM SOUTH AT WEST

Class C § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2026-02-10

Violation ID: #18633715

Current Status: Open

Date Issued: 2026-02-10T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE BATHROOM LOCATED AT APT 6, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class C HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM NORTH AT EAST
2025-11-26

Violation ID: #18442811

Current Status: Open

Date Issued: 2025-11-26T00:00:00.000

Description: HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM NORTH AT EAST

Class C HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM NORTH AT EAST
2025-11-26

Violation ID: #18442813

Current Status: Open

Date Issued: 2025-11-26T00:00:00.000

Description: HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 8, 4th STORY, 1st APARTMENT FROM NORTH AT EAST

Class C § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT DOOR AT BOILER ROOM
2024-12-18

Violation ID: #17584767

Current Status: Open

Date Issued: 2024-12-18T00:00:00.000

Description: § 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE HINGES AT DOOR AT BOILER ROOM

Class C § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING. IN THE 1st ROOM FROM EAST LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH
2024-03-16

Violation ID: #16746942

Current Status: Open

Date Issued: 2024-03-16T00:00:00.000

Description: § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING. IN THE 1st ROOM FROM EAST LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM WEST AT NORTH

Class C § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROX. 8 SQ. FT. AT NORTH WALL AND 4 SQ. FT. AT WEST WALL IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 16736427 ISSUED 12-MAR-24 HAS BEEN UPGRADED TO CLASS C PER ADMINISTRATIVE CODE §27-2017.3a(5)(a) or (b).
2024-03-12

Violation ID: #18079358

Current Status: Open

Date Issued: 2024-03-12T00:00:00.000

Description: § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROX. 8 SQ. FT. AT NORTH WALL AND 4 SQ. FT. AT WEST WALL IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 16736427 ISSUED 12-MAR-24 HAS BEEN UPGRADED TO CLASS C PER ADMINISTRATIVE CODE §27-2017.3a(5)(a) or (b).

Class C § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROXIMATELY 12 SQ FT AT CEILING, NORTH AND WEST WALL IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 16719061 ISSUED 04-MAR-24 HAS BEEN UPGRADED TO CLASS C PER ADMINISTRATIVE CODE §27-2017.3a(5)(a) or (b).
2024-03-04

Violation ID: #18079357

Current Status: Open

Date Issued: 2024-03-04T00:00:00.000

Description: § 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROXIMATELY 12 SQ FT AT CEILING, NORTH AND WEST WALL IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 16719061 ISSUED 04-MAR-24 HAS BEEN UPGRADED TO CLASS C PER ADMINISTRATIVE CODE §27-2017.3a(5)(a) or (b).

⚠️ What does Class C mean?

Class C violations are classified as immediately hazardous by the HPD (e.g. lack of heat or hot water, active mold, severe rodent infestations, lead-based paint, or carbon monoxide detector issues). Landlords are legally required to resolve these immediately.

Violation History & Landlord Accountability

D Violation Severity
44 Open Violations
3 Class A
26 Class B
15 Class C

Significant Class C violation load.

Score: 41.7/100 · Based on current open violations. Higher Class C violations = lower score.

First violation on record: 2024-01-15 · Most recent: 2026-03-24

A Few/no Class C  ·  B Limited Class C  ·  C Multiple Class C  ·  D Significant  ·  F High hazard load

Neighborhood Comparison

How 520 4 Avenue, Brooklyn compares to other tracked buildings in Park Slope in the last 12 months.

0
Average building in Park Slope
66
This building
1
NYC Average

Nearby Buildings

Top complained-about buildings in the same neighborhood (Park Slope) in the last 12 months.

Address Complaints Violations Risk Score Actions
515 6 AVENUE, BROOKLYN 439 17 CRITICAL View →
38 SIXTH AVENUE, BROOKLYN 271 79 CRITICAL View →
89 VISITATION PLACE, BROOKLYN 224 190 CRITICAL View →
230 ST JOHNS PLACE, BROOKLYN 211 47 CRITICAL View →
110 4 AVENUE, BROOKLYN 137 2 CRITICAL View →
Data last updated: June 8, 2026 · Source: NYC Open Data

⚠️ Serious Concerns Found

This building has 66 complaints and 15 Class C (immediately hazardous) violations on record in the last 12 months. Review the full violation list carefully before signing any lease.

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About This Data

Complaint data is sourced from the NYC 311 Service Requests dataset (NYC Open Data). Violation data is from the HPD Housing Maintenance Code Violations dataset. Building info is based on NYC PLUTO by NYC Department of City Planning.

All records are public-domain municipal data provided as-is. Updated daily. Last verified: June 8, 2026.