Meta description: NYC apartment violations — HPD Class A, B, C fines, correction deadlines, and DOB issues explained. How landlords clear violations fast before they compound.
Quick Answer
NYC apartment violations come from two agencies — HPD (housing code) and DOB (building code). HPD violations are Class A (non-hazardous, 90-day correction), Class B (hazardous, 30-day correction), or Class C (immediately hazardous, 24-hour correction). Fines range from $50 to $15,000 per violation. Uncorrected violations generate daily civil penalties, block permits, and create legal liability with tenants. An expediter handles the correction filing and certification so you don’t lose time dealing with the agencies directly.
If you own rental property in New York City, apartment violations aren’t a question of if — they’re a question of when. HPD issued over 250,000 housing code violations in 2024 alone. DOB issued thousands more for illegal conversions, unpermitted work, and safety deficiencies in residential buildings.
Most landlords don’t have a problem until a tenant files a 311 complaint, an inspector shows up, or a title search before closing surfaces a stack of open violations they didn’t know about. At that point, the correction clock is already running — and in some cases, it started months ago.
This guide breaks down how NYC apartment violations work, what the deadlines mean, what the fines look like, and how to clear them before they turn into a bigger problem.
Which Agencies Issue Apartment Violations in NYC?
Apartment violations in NYC come from two separate agencies with different enforcement mechanisms — HPD, which enforces habitability conditions inside the apartment, and DOB, whose violations run through the ECB/OATH system. Mixing them up is one of the most common and costly mistakes landlords make, because the clearance path is different for each.
Apartment violations in NYC come from two separate agencies with different enforcement mechanisms. Mixing them up is one of the most common — and costly — mistakes landlords make.
HPD (Housing Preservation & Development) enforces the Housing Maintenance Code. They issue violations when apartments have conditions affecting health, safety, or habitability — heat failures, vermin, water leaks, lead paint hazards, broken smoke detectors, mold. HPD violations are classified by severity and carry mandatory correction deadlines with daily civil penalties for non-compliance.
DOB (Department of Buildings) enforces the Building Code. DOB violations on residential buildings typically involve unpermitted work, illegal conversions (adding a unit or dividing a room without approval), fire egress issues, or structural concerns. DOB violations are enforced through the ECB/OATH system — meaning they carry civil fines that must be paid or adjudicated at an OATH hearing.
Clearing one doesn’t clear the other. If your building has both an HPD violation for lack of heat and a DOB violation for unpermitted work in the same apartment, you’re dealing with two separate correction and certification processes.
Apartment violations are a subset of a wider enforcement system. The complete process for removing NYC building violations covers HPD and DOB alongside ECB, FDNY and DOT, with the correction windows and penalty schedules for each.
What Are the HPD Violation Classes in NYC?
HPD classifies every violation by hazard level, and the class sets the correction deadline. Class A (non-hazardous) carries a 90-day window, Class B (hazardous) 30 days, and Class C (immediately hazardous) 24 hours. The class also determines the financial exposure if the deadline is missed.
HPD classifies every violation by hazard level. The class determines your correction deadline — and the financial exposure if you miss it.
Class A — Non-Hazardous (90-Day Correction Window)
Class A violations cover minor maintenance deficiencies that don’t immediately threaten health or safety. Examples include missing apartment numbers, minor peeling paint in non-lead contexts, defective doorbells, or broken window sash cords. You have 90 days to correct and file a certification. These are the easiest to resolve but routinely get ignored — which is a mistake, because uncertified Class A violations can compound and feed into HPD’s litigation program if they’re recurring.
Class B — Hazardous (30-Day Correction Window)
Class B violations cover conditions that endanger health or safety but are not immediately life-threatening. Vermin infestation, leaking pipes causing water damage, broken apartment door locks, defective smoke detectors, and inadequate lighting in common areas all fall here. Thirty days sounds like enough time — until you factor in getting a licensed contractor scheduled, completing the work, and filing the certification with HPD before the deadline. If you miss it, HPD can impose civil penalties and refer the case to its legal enforcement unit.
Class C — Immediately Hazardous (24-Hour Correction Window)
Class C violations are the most serious. No heat in winter, no hot water, gas leaks, lead paint hazards, structural collapse risk, exposed wiring, and rodent infestation all fall into Class C. You have 24 hours to begin correction — not 24 hours to complete it, but HPD expects active remediation to be underway. For lead paint specifically, Local Law 1 requires a licensed lead inspector and XRF testing, not just painting over the surface.
Failure to correct a Class C violation within the required window can result in emergency HPD repairs at the owner’s expense — and HPD’s contractors charge rates far above market rate. The bill becomes a lien on the property.
What Causes DOB Violations in an Apartment Building?
DOB violations in apartment buildings most often come from illegal conversions — converting a basement or cellar to a habitable apartment, dividing a room to create an additional unit, or operating an SRO-style building without a valid Certificate of Occupancy for that use.
DOB violations in apartment buildings most commonly involve:
Illegal conversions — Converting a basement or cellar to a habitable apartment, dividing a room to create an additional unit, or operating an SRO-style building without a valid Certificate of Occupancy for that use. These violations are issued under DOB code 28-210.1 and carry fines of $5,000–$15,000 per unit. The city has significantly increased enforcement of illegal basement apartments since 2023.
Work without a permit — Renovating a kitchen or bathroom, moving plumbing, adding an electrical panel, or altering a load-bearing wall without a DOB permit triggers a Work Without Permit (WWP) violation. These account for 41% of all DOB violations in NYC and carry fines of $2,500–$25,000 depending on the scope of work.
Failure to maintain — Structural deterioration, broken fire escapes, damaged exterior walls, and deteriorated roofs can all trigger DOB violations. These require an architect or engineer to file the correction documents.
DOB violations in the ECB/OATH system accrue interest if not resolved. Unresolved DOB violations appear in property title searches and will surface at closing — which can delay or kill a sale.
How Much Are HPD Violation Fines in NYC?
HPD civil penalties range from $50 per day for Class A violations to $250–$10,000 per violation for Class B and C. For Class C violations involving heat or hot water, the daily penalty is $250 per apartment affected during the violation period.
DOB/ECB penalties are typically assessed as a single fine at the violation amount, but they accrue 9% annual interest if unpaid. After 60 days without payment or hearing request, HPD and ECB violations can convert to judgments — which become liens on the property. A property with active liens cannot be refinanced or sold without satisfying them.
The other consequence that landlords underestimate: open HPD violations create legal leverage for tenants. Rent-stabilized tenants can file HP actions in Housing Court, and a judge can reduce rent or order repairs at the landlord’s expense based on the HPD record.
How Do You Clear an HPD Violation?
Clearing an HPD violation is a two-part process — correct the condition and file the certification. Many landlords do the first part and skip the second, leaving the violation open on the HPD record even after the physical problem is fixed.
For most Class A and B violations, the landlord or their representative submits a Certification of Correction through HPD’s online portal. HPD then schedules a compliance inspection to verify the work. If the inspector confirms the condition is corrected, the violation is dismissed.
For Class C violations, HPD may inspect without scheduling — they can show up within 24 hours of the initial violation and again after you certify correction. The documentation requirements are more stringent: photos, contractor invoices, and in lead-paint cases, a clearance report from a licensed contractor.
For more on clearing HPD violations specifically, see our guide: How to Clear HPD Violations in NYC.
How Do You Clear a DOB Apartment Violation?
DOB violations in the ECB/OATH system require either payment of the fine or an OATH hearing. Simply correcting the physical condition doesn’t automatically close a DOB violation — you must address both the code issue and the civil penalty separately.
For violations tied to unpermitted work or illegal conversions, correction typically requires:
- Filing a permit application with DOB for the work (retroactive permitting)
- Completing the work under permit with required inspections
- Filing a Certificate of Correction with the DOB
- Resolving the ECB summons through payment or OATH hearing
An expediter can handle the DOB filing and tracking — significantly faster than managing DOB NOW on your own if you’re not familiar with the portal. Learn more about the DOB violation removal process or the ECB violation system.
Can You Sell an Apartment Building With Open Violations?
If you’re selling an apartment building, open HPD and DOB violations will surface in the buyer’s title search. Some buyers walk. Others demand a price reduction. Others require the violations to be cleared before closing.
The problem is timing. HPD inspections to verify correction don’t happen overnight. DOB permit work can take weeks. If you wait until a buyer is in contract to start clearing violations, you risk a delayed or collapsed closing.
The right move — especially if the building has multiple violations — is a pre-listing violation review. See what’s open, prioritize by severity and closing risk, and start the correction process before you go to market. Our real estate compliance services are designed specifically for this workflow.
FAQ: NYC Apartment Violations
What’s the difference between an HPD violation and a DOB violation?
HPD violations are issued by the Housing Preservation & Development agency for housing maintenance code issues — habitability problems inside apartments like lack of heat, vermin, or water damage. DOB violations are issued by the Department of Buildings for building code issues — unpermitted construction, illegal conversions, or structural concerns. They’re handled by different agencies, different enforcement systems, and require separate correction filings.
How long do I have to correct an HPD violation?
It depends on the class. Class A (non-hazardous) gives you 90 days. Class B (hazardous) gives you 30 days. Class C (immediately hazardous) requires correction to begin within 24 hours. These deadlines run from the date the violation is issued — not from the date you learn about it.
What happens if I fix the problem but don’t file the certification?
The violation stays open on the HPD record. HPD doesn’t close violations automatically when conditions are corrected — you must submit a Certification of Correction and pass an HPD inspection. An open violation on the record creates ongoing legal exposure and will appear in title searches at closing.
Can a tenant use open HPD violations against me in Housing Court?
Yes. Tenants in rent-stabilized apartments can file HP actions in Housing Court based on open HPD violations. A judge can order repairs and — in cases of serious or long-standing Class B or C violations — reduce rent or impose rent abatement. The HPD record is admissible evidence in these proceedings.
Will open violations block me from selling my building?
Open violations don’t automatically block a sale, but they appear in title searches and affect negotiations. Class C HPD violations and uncured ECB judgments are the most deal-threatening. ECB violations that have converted to liens must typically be satisfied before a title company will insure the transaction. For more on this, see our guide: Can You Sell a Property With Open Violations in NYC?
How long does it take to clear apartment violations in NYC?
Timeline varies by violation type. Simple Class A HPD violations with clear corrections can be closed in 2–4 weeks. Class C violations in emergency scenarios can be certified within a few days if the work is done correctly and the inspector can schedule quickly. DOB violations tied to permit work take longer — typically 4–12 weeks depending on DOB queue times and scope of work. An expediter working the DOB portal directly can significantly compress these timelines.
Should I hire an expediter or handle violations myself?
For a single Class A violation, self-certification is usually manageable. For Class C violations, multiple violations, DOB filing requirements, or any situation with an OATH hearing, professional representation typically pays for itself — both in faster resolution and avoided escalation costs. Valerie Samuel at All Boro Expediter handles HPD certification, DOB filings, and OATH hearing representation across all five boroughs. Contact us to review your violation profile.
Don’t Let Apartment Violations Compound
The biggest mistake NYC landlords make with apartment violations isn’t failing to fix the condition — it’s failing to file the certification. The physical problem gets corrected, but the open violation sits on the HPD record, accruing exposure.
If your building has open HPD or DOB violations, or if you’re approaching a sale and want to clear the record first, Valerie Samuel can review your violation history and manage the clearance process from start to finish.
Contact All Boro Expediter to get started.
