8411 21st Avenue

8411 21st Avenue in Bensonhurst, Brooklyn, has 21 open HPD violations, 7 of them class C, and 33 of 34 units are rent-stabilized, as of Oct 26, 2026. StreetSpy grade: C (68/100).

Multi-family walk-up · 34 units · Built 1924

StreetSpy grade: C (Fair, 68/100)

• 7 immediately hazardous violations open (the class that covers no heat, pests, lead paint and similar).
• 1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a.
• The head officer on this registration is named on 5 buildings' registrations; 1 graded D or F.
• 33 of 34 units are rent-stabilized; 31 on the 2007 tax bill.

More open violations per unit than 5 in 10 Brooklyn buildings this size.

• Repairs: High (21 open, 7 class C), records as of Oct 26, 2026
• Heat and hot water: No complaints, 12 mo, records as of Oct 25, 2026
• Pests: Clear (Owner reported none, 3 yr), records as of Oct 28, 2026
• Safety: Clear (No open DOB violations), records as of Oct 26, 2026
• Registration: Renewal not yet in city data, records as of Oct 3, 2026

How the grade works

Housing code violations (HPD)

21 open violations: 7 class C (immediately hazardous), 7 class B, 7 class A. 0 issued in the last 12 months. 42 on record. Oldest open violation issued 2004-07-30. Newest violation issued 2025-09-11.

0 closed in the last 90 days. Median 197 days from issue to close for the 1 violations closed in the last 12 months.

1 open violation is classified rent-impairing under NY Multiple Dwelling Law section 302-a. Section 302-a; NY Courts guidance on getting repairs.

• Class C: No heat / heating defect. D26-17.10 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDING'S HEATING SYSTEM 1 STY PUB HALL., issued 2008-06-18. HPD violation 1012007
• Class C: Damaged plaster or paint, 1st floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE PRIVATE HALLWAY LOCATED AT APT A2, 1st STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION AT NORTH (apt A2), issued 2007-08-17. HPD violation 6883852
• Class C: Damaged plaster or paint, 1st room from the east, 1st floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE 1st ROOM FROM EAST AT SOUTH LOCATED AT APT A2, 1st STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION AT NORTH (apt A2), issued 2007-08-17. HPD violation 6883849
• Class C: Damaged plaster or paint, 1st room from the north, 1st floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE 1st ROOM FROM NORTH AT WEST LOCATED AT APT A2, 1st STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION AT NORTH (apt A2), issued 2007-08-17. HPD violation 6883851
• Class C: Illegal occupancy or use (exterior). , 2007 ADM CODE REMOVE THE ILLEGAL FASTENING PADLOCK AT METAL GATE AT SOUTH FRONT YARD OF THE BUILDING YARD, 1st STORY, issued 2007-08-17. HPD violation 6883838
• Class C: Damaged plaster or paint, 1st room from the north, 1st floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE 1st ROOM FROM NORTH AT EAST LOCATED AT APT A2, 1st STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION AT NORTH (apt A2), issued 2007-08-17. HPD violation 6883846
• Class C: Damaged plaster or paint, bathroom, 2nd floor. REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR CEILING IN THE BATHROOM LOCATED AT APT B3, 2nd STORY, 2nd APARTMENT FROM WEST AT NORTH , SECTION AT NORTH (apt B3), issued 2004-07-30. HPD violation 5055118
• Class B: Mold, bathroom, 1st floor. HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... LESS THAN 10 SQUARE FEET AT THE WINDOW FRAME 1ST FROM WEST AT NORTH IN THE BATHROOM LOCATED AT APT A1, 1st STORY, 1st APARTMENT FROM WEST AT NORTH , SECTION ''NORTH'' ORIGINAL VIOLATION 17887252 ISSUED 12-MAY-25 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE 27-2017.3a(3)(a) or (b). (apt A1), issued 2025-09-11. HPD violation 18228918

311 housing complaints

0 in the last 12 months, 1 in 5 years.

Bedbugs

The owner reported 0 infested units in the last 3 years of filings. 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: Owner reported 0 infested units
• 2024: Owner reported 0 infested units
• 2023: Owner reported 0 infested units
• 2022: Owner reported 0 infested units
• 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

33 of 34 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: 33 in 2024, 31 in 2007. Source: DOF tax bills for 2007 and 2024; years with no bill on file are left out.

Owner and management

Owner: A21 REALTY CORP. Head officer: SIMY GRAUS. Managing agent: A21 REALTY CORP. This owner has 5 buildings on record, 1 graded D or F. See the full portfolio.

Last HPD registration Sep 13, 2025. Registration on file through Sep 1, 2026; renewal not yet in the city's data.

Tax lot and city IDs

BBL 3063350006, HPD building ID 145400. HPD Online, ACRIS, DOB BIS.

Nearest subway

• Bay Pkwy (D), 3 min walk
• 20 Av (D), 4 min walk
• 18 Av (D), 9 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.