HPD Violations NYC: The Housing Code Guide

01 · SCOPEWhat HPD actually enforces

The New York City Department of Housing Preservation & Development (HPD) is the city's tenant-facing housing agency. HPD enforces the NYC Housing Maintenance Code and the Multiple Dwelling Law against rental buildings — from three-family homes all the way to 500-unit high-rises.

HPD violations are distinct from DOB violations in a few critical ways: they're tenant-driven, they move fast, they escalate automatically, and they attach to individual apartment units rather than the whole building.

02 · CLASSESThe A / B / C class system

Every HPD violation carries a class that determines urgency, cure window, and escalation path. Understanding the class is more important than understanding the violation type.

Class A — Non-hazardous

Minor issues: a missing apartment number on a door, an expired boiler registration plate, minor plaster damage. Cure window: 90 days. Default penalty: $10–$50 per violation per day if uncured past the window.

Class B — Hazardous

Significant hazards: missing smoke detector, missing carbon monoxide detector, pest infestation, mold, broken locks, broken window guards in buildings with children under 11, failing self-closing doors. Cure window: 30 days. Default penalty: $25–$100/day.

Class C — Immediately hazardous

Life-safety conditions: no heat or hot water, lead paint in units with children under 7, bedbug infestations, collapsed ceilings, defective gas lines, vacate-order-grade conditions. Cure window: 24 hours for some sub-types (heat, hot water, lead), up to 21 days for others. Default penalty: $50–$1,000+/day. The "/day" part matters — a single uncured Class C can accumulate $30,000+ in penalties before the owner realizes.

Class is not permanent. HPD inspectors re-classify violations based on conditions observed on re-inspection. A Class A left uncured can and does get re-issued as a Class B. Class B can escalate to Class C. The escalation is automatic.

03 · THE ORIGIN PATHHow HPD violations get issued

Nearly all HPD violations start the same way: a tenant calls 311. The call is routed to HPD's Central Complaint Bureau. An inspector is dispatched — target response is within 24 hours for Class C conditions, 72 hours for Class B, up to 2 weeks for Class A.

The tenant's rights trigger

Tenants in NYC have extensive rights to file complaints and pursue remedies. HPD cannot refuse to inspect based on prior history. Anonymous complaints are accepted and investigated.

Inspection outcome paths

There are four possible outcomes of an inspection: violation issued (becomes a class A/B/C), access denied (inspector couldn't reach the unit — becomes its own sub-issue), no violation observed (case closed), or the tenant withdraws.

04 · HEAT SEASONThe most important calendar in NYC property management

Heat season in NYC runs October 1 through May 31. During heat season, HPD enforces specific temperature requirements:

• Daytime (6 AM – 10 PM): 68°F minimum when outside temperature is below 55°F
• Nighttime (10 PM – 6 AM): 62°F minimum (no outdoor temperature trigger)
• Hot water: 120°F minimum year-round

Heat and hot water complaints account for nearly 40% of all HPD violations issued during heat season. They're almost always Class C. The cure window is 24 hours. And HPD can and will issue heat violations by the day — a building that's cold for 5 days can get 5 separate Class C violations, each accruing daily penalties.

05 · THE CURE PROCESSFrom violation to dismissal

Step 1: Correct the condition

The underlying issue must be fixed. Get photos, get receipts, and have the work performed by a licensed professional where required (plumbing, electrical, gas).

Step 2: File Certification of Correction

Known as "cert of correction" — filed through the HPD Online portal. For each violation, you specify the date corrected, the method, and any supporting documentation. There's no filing fee.

Step 3: eCertification vs. physical re-inspection

For many Class A and B violations, HPD accepts the owner's certification at face value ("eCertification"). For Class C and for repeat-offender buildings, HPD re-inspects to verify the cure. Re-inspection fees are $230 for the first, $490 for subsequent.

Step 4: Dismissal Request (where needed)

If the violation was issued in error — wrong unit, wrong condition, wrong tenant — file a Dismissal Request within 35 days of issuance. HPD reviews and decides. Dismissal requests reopen the question; they're not automatic.

06 · THE AEP WARNINGWhat happens when you ignore HPD

HPD maintains a list of the city's worst-performing buildings — the Alternative Enforcement Program (AEP). A building lands on AEP based on open Class B and C violations per unit, plus a few discretionary factors.

Once on AEP, the building is subject to direct HPD-controlled repairs, additional fees billed to the owner, public naming, and interference with refinance activity. Getting off AEP requires clearing the Class B/C count below threshold — typically 2+ years of concentrated compliance work.

07 · RENT REGULATION INTERACTIONSWhy violations affect rent-stabilized units differently

In rent-stabilized buildings, open HPD violations affect what the landlord can and cannot do. Major Capital Improvement (MCI) applications with open violations at the unit level get rejected. Individual Apartment Improvement (IAI) claims face heightened scrutiny. Harassment protections under the Tenant Protection Act can trigger based on repeat violation patterns.

08 · MONITORINGWhy HPD monitoring is worth more than DOB monitoring

HPD violations move faster than DOB violations. A 311 call at 10 AM can become a Class C violation by 4 PM. A Class C that's not cured within 24 hours starts accruing daily penalties. By the time a certified letter reaches the owner, the penalty meter has run for days.

Continuous HPD monitoring — watching both 311 complaint routing and the HPD violation feed — lets operators intervene in the window when the cost to cure is smallest. That's the core value of ViolationWatch HPD monitoring.

09 · CHECKLISTThe HPD compliance baseline

1. Valid smoke and carbon monoxide detectors in every unit, batteries fresh, expiration dates current
2. Self-closing entry doors on all residential units, functional self-close hardware
3. Window guards installed in every unit that has a child under 11 (and on any unit with elevated risk)
4. Lead paint disclosure on file, and any unit with a child under 7 inspected annually under LL1 of 2004
5. Heat and hot water systems tested and logged before Oct 1 every year
6. Pest management plan in place (LL55)
7. Mold remediation SOP for any unit with a complaint history
8. Annual HPD registration filed and current
9. Real-time alert routing configured so 311 complaints reach the super within minutes