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7424 21 AVENUE

Brooklyn · ZIP 11204 · BIN 3159791 · Bensonhurst · Last violation Aug 5, 2026 · Last complaint Aug 12, 2026

NeighborhoodBensonhurst
More violations than 100% of nearby buildings
More violations than 100% of buildings and more complaints than 100% of buildings in Bensonhurst. Size-normalized against residential buildings in the neighborhood for issues in the last 10 years.
ViolationsComplaints
Activity TrendsLast 5 years
A steady level of activity over time
Last 2 yrs: 96 violations · 426 complaints
'21'26ViolationsComplaints
▼ View all activity over time
Severityⓘopen violations
31 immediately hazardous (Class C) violations still open
Class C violations include lead paint, mold, pest infestations, heat/hot water failure, and structural hazards — the most serious category.
Class Cimmediately hazardous31Class Bhazardous21

What to watch forⓘ

  1. Hazardous violations are open, including mold and pests, fire safety, and building maintenance.
    Worth checking · AI-assistedⓘ
    Look at corners, under sinks, and behind appliances for droppings, dead insects, or live rodents; check that stairwell doors and fire escape access close fully and open freely from inside; inspect walls, ceilings, and corners for water stains, soft spots, or visible damage to plaster or paint.
    details ▸

    Deadlines vary by condition: immediate for heat and hot water, 14 days for self-closing doors, 21 days for lead paint, window guards, mold, and mice, cockroaches or rats, and 24 hours for everything else. They run from the date the owner is served, and mark when civil penalties can be sought in Housing Court. They are not a promise the condition is fixed by then. If the owner does not fix it, HPD can send its own contractor and bill them.

    • —Mold & pests — Rodent, cockroach, bedbug, or other pest infestation and extermination related issues.
    • —Safety & fire — Blocked, unsafe, or inaccessible exits, hallways, stairs, or fire escape routes.
Housing Preservation & Development Violations
Total violations since 2008
364
19 per year avg.↑ Up 12% in the last 2 years (96 vs 86 prior 2 yrs)
Open violations
71
Class C (immed. haz.)ⓘ31
Class B (hazardous)ⓘ21
Rent-impairingⓘ2
Housing Preservation & Development Complaints
Total complaints since 2003
1,531
64 per year avg.↑ Up 115% in the last 2 years (426 vs 198 prior 2 yrs)
Complaint Resolution
No access10%Violation issued6%No violation25%Phone resolved59%Other0%(1,531)
Urgency breakdown
Last 12 mo.

Top violation categories

5 yrsAll time
Maintenanceⓘ60 violations
Egressⓘ54 violations
Extermination & Rodent Eradicationⓘ29 violations
Posting/Signageⓘ26 violations
Paintingⓘ19 violations
Cleaningⓘ13 violations
Filing: Bedbugsⓘ5 violations
Heat And Hot Waterⓘ4 violations
Top complaint groupsⓘ
5 yrsAll time
Heat / hot waterⓘ583 complaints
Mold & pestsⓘ125 complaints
Bldg maintenanceⓘ80 complaints
Water & plumbingⓘ23 complaints
Electricalⓘ7 complaints
Adminⓘ2 complaints
Appliancesⓘ1 complaints
Outdoor / structuralⓘ1 complaints
See violations →See complaints →
See something wrong? File a complaint with 311
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Bldg maintenance — General building repair, upkeep, and maintenance related housing code violations.

The violation list below shows which conditions are open and when each was cited. If one in your own apartment is still unaddressed, call 311.

  • NYC HPD, ABCs of Housing 2024 (Tenants' Guide) — violation classes
  • NYC HPD, Penalties and Fees — correction deadlines
  • Heat or hot water problems reported in the last five years.
    Worth checking · AI-assistedⓘ
    Turn on hot water at the kitchen sink and bathroom sink and feel the water temperature after running for one minute.
    details ▸

    Heat is required October 1 through May 31: at least 68°F from 6am to 10pm when it is below 55°F outside, and 62°F overnight whatever the temperature outside. Hot water must be at least 120°F, 24 hours a day, all year.

    If your apartment is colder than that, file a complaint with 311 and keep the service request number so you can track it. Never use a gas oven or range for heat, which can produce dangerous levels of carbon monoxide.

    • NYC HPD, ABCs of Housing 2024 (Tenants' Guide)
  • Detector violations on record.
    Worth checking · AI-assistedⓘ
    Locate smoke detectors on the ceiling near bedrooms and in hallways, and ask the broker whether carbon monoxide detectors are present in the unit.
    details ▸

    Responsibility is split: the owner provides, installs, and replaces the detectors, while the tenant tests them monthly and replaces the batteries. An open violation means the owner has not yet certified to HPD that the condition was fixed, so a device may still be missing or dead at move-in. A tenant reimburses the owner for a newly installed device, $25 for a smoke or carbon monoxide detector and $50 for a combined unit, and is responsible for replacing one that goes missing or is damaged during the tenancy.

    On a viewing, look for a smoke alarm within fifteen feet of the door of each room used for sleeping, on the ceiling or just below it on the wall, and a carbon monoxide alarm at any height, including one plugged into a hallway outlet. Press the test button, and check that none have been painted over. A chirping alarm usually means a low battery, which is the tenant's to replace, but detectors also sound a separate end-of-life alarm when the device itself has to be replaced by the owner.

    • NYC HPD, ABCs of Housing 2024 (Tenants' Guide) — the requirement
    • NYC HPD, Smoke, Carbon Monoxide, and Natural Gas Detectors — responsibilities, placement, and reimbursement
    • Open violation ages
    ▪ < 30 days1% (1)
    ▪ 30–90 days23% (16)
    ▪ 3–12 months38% (27)
    ▪ 1–3 years32% (23)
    ▪ 3+ years6% (4)
    Prior 4 yr.
    Immed. Emergency1%2%
    Emergency76%83%
    Non-Emergency23%15%
    (344)
    (489)