How many noise complaints is too many for an NYC apartment?
The showing was on a Tuesday at 2pm and the apartment was silent. That tells you nothing about Friday at 1am, and a lease is not a Tuesday-afternoon commitment. The building itself has an opinion on this question, on file with the city, and it's worth reading before you sign rather than after your upstairs neighbor's first party.
The short answer: read the count against the building's size, not on its own
Every building with people in it generates some noise complaints. The question is never whether a building has any on file. It's whether it has more than a building its size normally does, and almost nobody checks it that way, because doing so means holding a citywide comparison a search box doesn't have.
Since January 2023, across every NYC residential tax lot, a two-family house that's picked up three or more noise complaints is already in roughly the worst 3% of houses its size. Put a 20-unit rental at three complaints in the same window and it's barely above average: more than half of buildings that size have already crossed that line.
Why the raw count means something different at every size
NYC 311 logs complaints under eight separate noise categories, and only one of them is generated by the people you'd actually be living near. Noise - Street/Sidewalk, Noise - Vehicle, Noise - Commercial, and Noise - Helicopter belong to the block: a bar two doors down or a car alarm at 2am gets filed under a category built for the street outside, one that stays open regardless of what happens inside your own walls. Noise - Residential is the one that answers to the building itself: a party or loud music through a shared wall, banging or pounding from the floor above, a television left on loud enough for someone else to call it in. That's the category a report on a specific address should be built from, and lumping the rest in would make an apartment near a loud corner read as a noisy building when the noise never actually happens in it.
Even scoped that way, the count is still the wrong number to read on its own, for the same reason an open housing-violations count is: a 40-unit building collects more complaints than a two-family simply because forty households can complain about each other and two can't. A raw count answers "how many people live here," not "is this building loud." Normalizing by unit count makes the number mean the same thing at every size.
The numbers
Scope: NYC 311 Service Requests, complaint type Noise - Residential only, complaints filed since January 1, 2023, matched to the tax lot by the same 10-digit BBL PLUTO uses. Every residential lot in the city, banded by unit count, extracted August 2026:
| Building size | Residential lots | Share with none | Share with 3 or more | Median per 100 units |
|---|---|---|---|---|
| 1-2 units | 595k | 89% | 3% | 0 |
| 3-5 units | 104k | 79% | 7% | 0 |
| 6-19 units | 41k | 56% | 20% | 0 |
| 20-99 units | 23k | 22% | 56% | 9.5 |
| 100+ units | 4,700 | 13% | 73% | 5.0 |
Read your building's row. Nine out of ten one- and two-family houses have zero noise complaints filed against them in three and a half years, so even one or two on a small house is worth a second look, and three or more puts it in a small minority of its own class. A 20- to 99-unit rental crosses that same threshold routinely: more than half already have, because that's what a few dozen households sharing walls and hallways produces on its own.
The pattern reverses at the very top, and it's the same reversal that shows up in HPD's own violation records: buildings over 100 units carry a lower complaint rate per unit than the 20-to-99 band, not a higher one. Almost all of them clear the "3 or more" bar in absolute terms just because they hold so many households, but per 100 units they run cleaner than a mid-size building does. Large buildings are more often professionally managed, with a super and a lease that both address noise directly, which tracks with what ownership type predicts about upkeep more generally: a 20-unit walk-up more often isn't managed that way. The middle of the market is where a building's actual noise history is most likely to tell you something a doorman building's won't.
What to do about it once it's your problem
Filing with 311 is the first move regardless of what happens next, for a reason beyond getting a patrol car sent: it's the same record the table above is built from, so a complaint you file now is what a future search of your own address will show. Note the time and what the noise was rather than just calling it in, since a car isn't always free to come right away and a specific description holds up better than "again" does if you end up needing a pattern later rather than one incident.
Put it in writing to whoever runs the building too, separately from the 311 filing, since a landlord or co-op board that never hears from you directly has nothing to act on and no record that they were told. A message through a portal or in a text outlives a hallway conversation.
If you're in a rent-stabilized unit and the noise traces to something the building itself did or failed to do, rather than another tenant's conduct, a decreased-services complaint with the state's Division of Housing and Community Renewal is the separate filing that covers a landlord- caused condition specifically. That's a different office and a different form from a 311 noise complaint against a neighbor, and worth knowing apart from it before you need either one.
Look up any NYC address to see its 311 complaint history next to the building's own unit count, rather than tracking down each separately to do the division yourself. The city updates 311 daily, so a building's history keeps growing after the day you check it, same as its violation record does.