311 vs HPD: When to Call Which and What Happens After

Most NYC renters know they can call 311 when something goes wrong in their apartment — but many are unclear on exactly what 311 does, how it relates to HPD, and what actually happens after they file a complaint. Understanding this system makes you a more effective advocate for your own living conditions.

What Is 311?

311 is NYC's non-emergency government services hotline. It is the front door to dozens of city agencies and services — from pothole complaints to noise disputes to housing conditions. You can reach 311 by calling 311, texting 311, or visiting 311.nyc.gov.

When you file a housing complaint through 311, you are not actually reaching HPD directly — you are creating a complaint record that gets routed to the appropriate agency. For housing maintenance issues, that agency is HPD.

What Is HPD?

The NYC Department of Housing Preservation and Development (HPD) is the city agency responsible for enforcing the Housing Maintenance Code. HPD inspectors visit buildings, document violations, and issue formal notices requiring landlords to make corrections within specific timeframes.

HPD does not take calls from the public directly for housing complaints — you route through 311. But HPD does have an online portal (hpdonline.hpdnyc.org) where you can look up violation histories, check complaint statuses, and file some complaints directly.

When to Call 311 vs Contact HPD Directly

Call 311 When:

✓No heat or hot water — 311 triggers emergency HPD response during heat season
✓Active pest infestation (mice, cockroaches, bedbugs) in your unit
✓Mold that your landlord has refused to address
✓Illegal construction or renovation work happening in the building
✓Noise complaints (311 routes to NYPD for noise)
✓Gas leaks — 311 routes to Con Edison AND emergency services
✓Fire escape blocked or damaged
✓Elevator non-functional in a building where it is required

Go Directly to HPD Online When:

✓You want to look up a building's full violation history before renting
✓You want to check the status of a complaint you already filed
✓You want to file an online complaint instead of calling
✓You want to see all violations for a specific address
✓You are researching a landlord's history across multiple properties

What Happens After You Call 311

Here is the step-by-step process after you file a 311 housing complaint:

Complaint created: 311 generates a complaint record with a unique tracking number. Save this number.
Routed to HPD: The complaint is forwarded to HPD, usually within hours.
Inspection scheduled: HPD schedules an inspection — within 24 hours for heat/hot water emergencies during heat season, within a few days for other issues.
Inspection occurs: An HPD inspector visits the building. Note: they may inspect common areas and your unit if you are home, or common areas only if you are not.
Violation issued (if warranted): If the inspector finds a code violation, they issue a formal Notice of Violation (NOV) to the building owner with a correction deadline.
Landlord corrects or faces penalties: If the landlord does not correct within the deadline, HPD can impose fines and, in severe cases, perform emergency repairs and bill the landlord.
Record becomes public: The violation appears in HPD's public database — and on RenterBuzz — where future renters can see it.

Why Your Complaint Helps Future Renters

Every 311 complaint you file creates a permanent public record. RenterBuzz pulls this data — over 2.1 million complaints across 200,000+ NYC buildings — and displays it on every building page. Future renters searching a building before signing can see:

How many heat complaints were filed each winter
Whether rodent problems are ongoing or resolved
Whether noise complaints cluster around certain units or common areas
How complaint volume has changed over time under different management

Filing complaints is not just for your own benefit — it builds the public record that protects everyone who lives there after you.

Tracking Your Complaint

After filing, track your complaint at 311.nyc.gov using your service request number. You can see whether an inspection has been scheduled, whether a violation was issued, and whether the issue has been marked resolved.

If weeks pass without an inspection or resolution on a serious issue, file again. Multiple complaints about the same issue create a stronger paper trail and increase the urgency of HPD's response.

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