Health & Environment Reviewed 2026-08-17
The NYC noise code, and the quiet hours that don't exist
New Yorkers argue about "quiet hours" that were never written down. What the code actually sets is a threshold measured against your own block's background noise, and the agency that responds depends on what is making the sound.
The numbers that matter
- The nighttime standard
- 7 dB(A) above the ambient level, 10pm to 7am, measured in the receiving property or 15 feet from the source (NYC Administrative Code § 24-218(b)(1), read August 2026)
- The daytime standard
- 10 dB(A) above ambient, 7am to 10pm, same measuring points (NYC Administrative Code § 24-218(b)(2), read August 2026)
- Construction
- Weekdays 7am to 6pm; any other hour needs after-hours authorization (NYC Department of Environmental Protection, Construction Noise Rules, read August 2026)
- Who responds
- NYPD for neighbor noise, within 8 hours and only if it is still happening; DEP by scheduled inspection for equipment, construction and animals (NYC311, Noise from Neighbor, read August 2026)
There are no quiet hours
Ask around your building and someone will tell you noise is illegal after ten, or after eleven. No such clause exists. What the code prohibits is a category, defined loosely and then given numbers:
No person shall make, continue or cause or permit to be made or continued any unreasonable noise.
That is the whole general prohibition. Everything else in this piece is the city trying to say what "unreasonable" means.
The numbers are the surprising part, because they are not absolute. The code measures your neighbor against your block, not against a fixed ceiling:
Sound, other than impulsive sound, attributable to the source, measured at a level of 10 dB(A) or more above the ambient sound level at or after 7:00 a.m. and before 10:00 p.m., as measured at any point within a receiving property or as measured at a distance of 15 feet or more from the source on a public right-of-way.
Above the AMBIENT level. The same stereo can be legal on a truck route and a violation on a quiet street in Ditmas Park, and that is the design, not a loophole.
Sound, other than impulsive sound, attributable to the source, measured at a level of 7 dB(A) or more above the ambient sound level at or after 10:00 p.m. and before 7:00 a.m., as measured at any point within a receiving property or as measured at a distance of 15 feet or more from the source on a public right-of-way.
Here is the real 10pm rule. Nothing goes silent; the allowance simply tightens from 10 dB over ambient to 7. It is a threshold shift, not a curfew.
So the honest answer is that the code never names an hour at all. It states how much louder than your own surroundings you are allowed to be, and it lowers that margin at night.
Construction is the exception that does have a clock
The ambient test is explicitly switched off for building work, which is why a jackhammer at 7:01am is not measured against your quiet block at all:
The decibel level limits set forth in this section shall not apply to sound attributable to construction devices and activities.
Construction gets its own regime. The decibel comparison that governs your neighbor's party simply does not reach it.
Instead it gets fixed hours, and this is the one place your instinct about permitted times is correct:
You are allowed to conduct construction on your property between 7am and 6pm on weekdays. At all other times, including anytime on the weekends, you must apply for after-hours authorization.
Weekdays, 7 to 6. Weekend work is not banned, it is licensed, which is why the Saturday crew down the block may well be legal.
Any person or business doing construction in the city must develop a Construction Noise Mitigation Plan before the start of construction or renovation.
Every site is supposed to have one on file before the first hammer. It is the document a complaint gets measured against.
Who actually shows up
This is the part that decides whether your complaint accomplishes anything, and it is not intuitive. Two agencies split the work.
The Department of Environmental Protection (DEP) and the Police Department (NYPD) share the duties of enforcing the Noise Code.
Shared, and split by what is making the sound rather than by how loud it is.
A neighbor, a party, a stereo: that is the police, and the response has a condition attached that changes how you should time the call.
Officers from the New York Police Department (NYPD) will respond within 8 hours when they are not handling emergencies. They will be able to take action if the noise is still happening when they arrive.
Eight hours, and only actionable if it is still going. There is no after-the-fact ticket for a party that ended, which is why complaining the next morning accomplishes nothing.
Anything that is a machine, a building site, or an animal goes to DEP instead, and DEP works by inspection rather than by patrol. That is slower and it has a hard evidentiary rule:
Picture or video attachments may be used for informational purposes only. A condition must be observed in person by a DEP inspector for a summons or Commissioner's order to be issued.
Your recording is context, never proof. An inspector has to stand there and hear it, which is the single biggest reason construction complaints feel like they vanish.
The barking-dog process is the clearest illustration of how differently DEP moves:
If you are complaining about barking noise, DEP will send a letter about the noise to the dog's owner within 10 days of getting your complaint.
A letter, in ten days. Not a visit and not a summons. The first step is putting the owner on notice, which is worth knowing before you expect more.
You can get the inspection report
A provision added in 2024 is worth knowing about and almost nobody uses it: if an inspection happened on your complaint, you can ask for what it found, without filing a records request.
The department or police department shall provide a copy of a report requested under this section within 14 days of receiving such a request.
Keep your 311 tracking number: it is what the request is keyed to. The same section bars either agency from refusing on the ground that it was not filed as a formal FOIL request.
For the code itself, DEP points to one place, and it is the text this page quotes from:
The Noise Code is codified in Chapter 2 of Title 24 of the NYC Administrative Code.
Worth reading if a specific source is bothering you: air conditioners, dogs, mufflers, horns and burglar alarms each get their own section with their own test, separate from the general ambient rule above.
The questions New Yorkers actually ask
What are the quiet hours in New York City?
There are none, in the sense most people mean. The noise code sets no citywide curfew and no hour after which sound is banned. What changes at 10pm is the threshold: during the day a sound is unreasonable at 10 dB(A) over the ambient level, and from 10pm to 7am that tightens to 7 dB(A) over ambient.
How loud is too loud in NYC?
It depends on your block. The standard is relative, not absolute: the measurement is how far the sound rises above the existing background noise, taken inside the receiving property or 15 feet away on the street. The same volume can be legal on a busy avenue and a violation on a quiet residential street.
What hours is construction allowed in NYC?
Weekdays from 7am to 6pm. Anything outside that, including any weekend work, requires after-hours authorization, and every site must have a Construction Noise Mitigation Plan on file before work starts. Weekend construction is therefore not automatically illegal, it is permitted work.
Should I call 311 or 911 about noise?
311 for ordinary noise complaints. 911 for anything that is an emergency rather than a nuisance. Note that the two agencies behind 311 work differently: NYPD handles neighbor noise, DEP handles equipment, construction and animals.
Why does nothing happen when I report my neighbor?
Because NYPD can only act if the noise is still happening when officers arrive, and they respond within 8 hours when not handling emergencies. A party that ends before they get there cannot be ticketed after the fact. Reporting while it is ongoing is the only version of the complaint that can work.
Do photos or a video recording help my noise complaint?
Not as proof. The city states that attachments are for informational purposes only, and that a DEP inspector must personally observe the condition before a summons or Commissioner's order can be issued.
Can I find out what the inspector found?
Yes. Since a 2024 amendment, you can request a copy of the noise inspection report generated on your 311 complaint by giving the agency your 311 tracking number, and they must provide it within 14 days. They cannot refuse on the grounds that it was not submitted as a formal public-records request.
The documents
The public records this page draws on. Read them yourself:
Now watch the machinery move.
These pages explain how the city works on paper. The morning brief is how it worked today: what changed, what it means for your rent, your commute, and your block, in plain language.
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