How Loud Is Too Loud for Neighbours? Limits

Short answer: in most countries daytime apartment noise is tolerated up to roughly conversation level (around 55 dBA outdoors, 35 dBA inside with windows closed), while night limits sit about 10–15 dB lower — and a steady 30 dBA bedroom is the widely cited sleep target. The number alone never decides a dispute, but a dated log of Leq plus peaks, measured consistently with your phone, turns "they are too loud" into evidence a mediator can use. Below: reference limits by day and night, what common apartment sounds actually measure, and a logging routine that holds up.

The 30-second answer

Noise rules almost everywhere follow the same shape: generous by day, strict at night, strictest after 10 or 11 pm. Daytime living noise — conversation, TV at normal volume, cooking — is expected and rarely actionable. Night-time is where limits bite: steady sound above roughly 40–45 dBA at the facade, or about 30 dBA inside a bedroom, is where most standards say sleep starts to suffer. And one practical test works in any country: if you must raise your voice to talk over it at arm's length, it is around 70 dBA or more — too loud for any shared wall, day or night.

Two caveats before the numbers. First, limits differ by metric (Leq average vs maximum vs emergence above background), by place of measurement (your room vs their room vs the facade), and by city — always check your local ordinance or housing rules. Second, your phone is a screening tool, not a court instrument: it finds the pattern and documents it, while certified kit decides disputes. Our accuracy guide states the limits of phone readings plainly.

Day vs night: the reference values that shape most rules

The table below collects the reference values most neighbour-noise rules are built from. They are simplified — real ordinances add time slots, penalties for tonal or bass-heavy sound, and different metrics — but they explain why complaints at 11 pm succeed where the same sound at 11 am fails.

Reference day and night noise limits for residential areas
Standard / zone	Day	Night	What it means
WHO community guidance (outdoor)	55 dBA	45 dBA	Annoyance and sleep reference values, not law
India CPCB, residential zone	55 dBA	45 dBA	Notified ambient standards, 6 am–10 pm / 10 pm–6 am
Germany TA Lärm, general residential	55 dBA	40 dBA	Immission guide values at the facade
UK BS 8233 indoor design target	35 dBA	30 dBA	Living rooms by day, bedrooms at night, windows closed
US HUD indoor goal	45 dBA day-night average		24-hour weighted average for housing programmes

Figure 1 — Simplified day/night reference values (dBA). Outdoor guides sit near 55/45; indoor bedroom targets near 30 at night. Your city ordinance is what counts — look up its quiet hours.

What apartment sounds actually measure — and the verdict

Measure each sound in your own room, windows closed, phone at ear height where you sit or sleep. Typical ranges from our sound level guide and everyday sounds survey:

Typical decibel levels of apartment sounds with verdicts
Sound (in your room)	Typical level	Verdict
Quiet bedroom, night, windows closed	28–35 dBA	Healthy sleep range — protect this
Neighbour conversation through wall	35–45 dBA	Audible; annoying at night, rarely actionable by day
TV / music at neighbour's normal volume	45–55 dBA	Likely over night limits — log dates and duration
Subwoofer bass through wall/floor	45–55 dBA / 65–75 dBC	Bass-dominated — always log dBC too (see dBA vs dBC)
Dog barking, footsteps, doors slamming	70–85 dBA peaks	Peaks matter most — log maximum, count events per hour
Drills / renovation work	85–100 dBA	Almost always restricted to daytime hours — check permits

The pattern: steady mid-frequency sound is judged on its average (Leq), bass on dBC alongside dBA, and bangs, barks, and footsteps on maximum and event count. Logging the wrong metric is the most common reason complaints go nowhere.

The logging routine that mediators take seriously

One loud screenshot proves nothing. A two-week log proves a pattern. For each disturbance, record with the free online meter: date, start–end time, room, window open or closed, weighting (dBA), duration, Leq, maximum, and minimum — plus a dBC Leq when bass is involved. Measure 10–15 minutes per event so the Leq stabilises, keep the phone 30 cm off the wall at ear height, and stay silent yourself. Export CSV after each session and keep one line per event in the Noise Journal.

A strong log line reads: "Tue 4 Nov, 23:10–23:25, bedroom, windows closed: 52 dBA Leq / 71 dBA max / 68 dBC Leq — bass-heavy music through party wall." Three such lines across different nights beat thirty angry messages. Add one background line per room (a quiet 5 minutes with the noise absent) so the reader sees the emergence — the gap between background and event is often what rules are written around. Full technique in how to measure decibels and the phone-and-PC guide.

Fixes that actually work — in order of payoff

1. Talk with data, once. One calm visit with two log lines and a proposed quiet time resolves more cases than any device. Most neighbours have no idea how much travels. 2. Seal the flanking paths. Door gaps, shared vents, and hollow partition weak spots leak 5–15 dB — weatherstripping and door seals are the cheapest decibels you will ever buy. 3. Add mass and softness on your side. A filled bookshelf against the party wall, heavy curtains, rugs on hard floors: each shaves a few dB of reverberant build-up, and before/after Leq makes the gain visible. 4. Mask what remains. A steady 40 dBA fan masks peaks far better than silence for sleep. 5. Escalate in writing. Landlord or management with the log attached, then the municipal route with dates — the full ladder is in how to measure and reduce home noise.

Educational reference only — not legal advice. Noise law varies by city and tenancy; for disputes, check your local ordinance and seek qualified advice. Phone readings are screening data, not certified evidence.

Frequently asked questions

How many decibels is too loud for neighbours?

As a rule of thumb, steady sound above about 55 dBA by day or 40–45 dBA at night at the facade — roughly 35 dBA indoors by day and 30 dBA in the bedroom at night — is where most standards say it becomes a problem. Exact limits depend on your city ordinance, the metric used, and where it is measured, so check local quiet hours.

What time do noise restrictions start at night?

Most cities start night restrictions at 10 or 11 pm and lift them at 6 or 7 am — for example India's residential night period is 10 pm to 6 am. Lease agreements and housing societies often set earlier quiet hours, such as 9 pm. Check your municipal ordinance and your building rules; both can apply.

Can I use my phone to measure neighbour noise?

Yes, for documenting the pattern: log date, time, room, window position, Leq, maximum, and minimum over 10–15 minutes, plus dBC when bass is involved, and export CSV. Phone readings are screening data — good enough to brief a landlord or surveyor, but not certified evidence for courts or regulators.

My neighbour's bass reads low in dBA but shakes my room — why?

Because A-weighting filters out deep bass — it subtracts about 26 dB at 63 Hz — while C-weighting keeps it. Bass-heavy sound can read 48 dBA yet 68 dBC at the same spot. Always quote both numbers for bass complaints; the 15–25 dB gap itself proves low-frequency dominance.

What should I do before filing a noise complaint?

Log at least a week of dated events with Leq, maximum, and background levels, talk to the neighbour once with data and a proposed quiet time, then write to the landlord or management with the log attached. Escalate to the municipal route only with documentation — dated logs with exports are what move cases forward.

Sources and further reading

WHO — Guidelines for Community Noise (1999): 55 dBA daytime, 45 dBA night-time outdoor reference values; 30 dBA indoor bedroom.
WHO — Night Noise Guidelines for Europe (2009): 40 dB night outdoor target.
India CPCB — Noise Pollution (Regulation and Control) Rules: residential 55 dBA day / 45 dBA night.
Germany TA Lärm — immission guide values, general residential 55 dBA day / 40 dBA night.
UK BS 8233 — indoor design targets 35 dBA day living rooms / 30 dBA night bedrooms.

How Loud Is Too Loud for Neighbours? Apartment Limits Explained