423 Bay Ridge Avenue

423 Bay Ridge Avenue in Bay Ridge, Brooklyn, has 22 open HPD violations, 6 of them class C, and 6 of 6 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: F (40/100).

Multi-family walk-up · 6 units · Built 1931

StreetSpy grade: F (Severe, 40/100)

• 6 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 5 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The owner's bedbug filings report 6 infested units over the last 3 years.
• 6 of 6 units are rent-stabilized.

More open violations per unit than 7 in 10 Brooklyn buildings this size.

• Repairs: High (22 open, 6 class C), records as of Oct 26, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: High (6 infested units, 3 yr), records as of Oct 28, 2026
• Safety: Clear (No open DOB violations), records as of Oct 26, 2026
• Registration: Through Sep 1, 2027, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

22 open violations: 6 class C (immediately hazardous), 12 class B, 4 class A. 1 issued in the last 12 months. 36 on record. Oldest open violation issued 1991-01-22. Newest violation issued 2026-05-01.

0 closed in the last 90 days. Median 45 days from issue to close for the 2 violations closed in the last 12 months.

5 open violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.

• Class C: Mice, throughout the apartment, 2nd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 2L, 2nd STORY, 1st APARTMENT FROM NORTH AT EAST (apt 2L), issued 2021-07-08. HPD violation 14425051
• Class C: Roaches, throughout the apartment, 2nd floor. HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 2L, 2nd STORY, 1st APARTMENT FROM NORTH AT EAST (apt 2L), issued 2021-07-08. HPD violation 14425052
• Class C: Door, lock or intercom defect (entrance). , 2007 ADM CODE REMOVE THE ILLEGAL FASTENING CONSISTING OF AN UNACCEPTABLE ELECTROMAGNETIC LOCKING DEVICE INSTALLED AT BUILDING ENTRANCE DOOR , 1st STORY, issued 2021-07-01. HPD violation 14401938
• Class C: Mold, ceiling, bathroom, 1st floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... APPROXIMATELY 36 SQ. FT. AT CEILING AND ALL WALLS IN THE BATHROOM LOCATED AT APT 1L, 1st STORY, 1st APARTMENT FROM WEST AT NORTH (apt 1L), issued 2021-06-08. HPD violation 14372771
• Class C: Self-closing door not working (entrance). , 2007 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS AT FRONT ENTRANCE TO BUILDING , 1st STORY, issued 2021-06-08. HPD violation 14372766
• Class C: Door, lock or intercom defect (entrance). SECTION 27-2005, 2007 ADM CODE REMOVE THE ILLEGAL FASTENING ELECTROMAGNETIC LOCK INSTALLED AT ENTRANCE TO BUILDING DOOR, issued 2008-03-27. HPD violation 7210077
• Class B: Gas defect, kitchen, 2nd floor. PROVIDE AN ADEQUATE SUPPLY OF GAS TO THE FIXTURES AT RANGE IN THE KITCHEN LOCATED AT APT 2L, 2nd STORY, 1st APARTMENT FROM NORTH AT EAST (apt 2L), issued 2021-07-08. HPD violation 14425053
• Class B: Door, lock or intercom defect (entrance). PROVIDE SECURITY IN THE EVENT OF A POWER OUTAGE BY MEANS OF AN ACCEPTABLE MECHANICAL HEAVY DUTY LOCK AND LATCH SET AT BUILDING ENTRANCE DOOR , 1st STORY, issued 2021-07-01. HPD violation 14417662

311 housing complaints

0 in the last 12 months, 0 in 5 years.

Bedbugs

The owner reported 6 infested units in the last 3 years. HPD's bedbug filings are self-reported by the owner once a year; HPD does not inspect to confirm them.

• 2026: No bedbug filing on record for this year
• 2025: No bedbug filing on record for this year
• 2024: Owner reported 0 infested units
• 2023: Owner reported 6 infested, 0 treated, 0 re-infested
• 2022: No bedbug filing on record for this year
• 2021: No bedbug filing on record for this year

Buildings department (DOB)

No open DOB violations. 1 DOB violation on record. Check on DOB BIS.

Evictions and housing court

0 executed evictions in the last 3 years (0 on record). 0 open HPD cases; 0 harassment findings.

Rent stabilization

6 of 6 units rent-stabilized as of 2024. Stabilized renewals: 0% for one year and 0% for two years under RGB Order #58 (Oct 1, 2026 to Sep 30, 2027).

Rent-stabilized units on city tax bills: 6 in 2024, 6 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: GKZ REALTY INC. Head officer: VASILIKE ZOUGRAS. Managing agent: GKZ REALTY INC. This owner has 3 buildings on record, 3 graded D or F. See the full portfolio.

Last HPD registration Jun 11, 2026, valid through Sep 1, 2027.

Tax lot and city IDs

BBL 3058640073, HPD building ID 204606. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Bay Ridge Av (R), 1 min walk
• 77 St (R), 7 min walk
• 59 St (N, R), 11 min walk

How the grade is calculated

Sources: NYC HPD Housing Maintenance Code Violations, NYC 311 Service Requests, NYC HPD Bedbug Reporting, NYC Marshal Evictions (DOI), NYC HPD Housing Litigations, NYC DOB Violations, NYC DOF tax bills (via JustFix Who Owns What portfolio API, v2), NYC HPD Property Registration. Methodology. Report generated 2026-10-28.