Repeated drone noise changes how a home feels.
A single flight may be brief. Repeated flights are different. When commercial drones pass over homes again and again, the issue is not just decibels. It is interruption, anticipation and loss of quiet in places where people should be able to rest, work, garden, sleep and spend time with their families.
Food delivery is not an emergency service. Residents should not have to absorb a new commercial noise source over their homes for the convenience of deliveries they may never use.
One delivery, thousands of buildings within earshot.
Every delivery sweeps an audible noise corridor across the streets below it. The further the destination sits from the depot, the more buildings fall inside that corridor.
What residents are experiencing Reported by residents
- One route can affect many homes. The corridor is wide — audible to buildings hundreds of metres on either side.
- Short flights still create repeated disturbance. A single pass may last thirty seconds. At peak frequency, that is the same overhead event dozens of times a day.
- Hovering and descent matter. Delivery stops are louder than cruise passes and last longer.
- Quiet areas are affected most. The lower the background noise, the more the drone stands out.
- The burden falls on people underneath, not just customers. Most people under the routes never ordered the service.
The headline counts buildings, each once. Audible exposures run higher: the corridor is flown twice — outbound and return — so most buildings hear a single delivery at least twice.
Ballintemple
Bessboro
You hear it before you see it. Because the sound spreads outward in every direction, it reaches far beyond the buildings directly under the line — on the order of 100–300 m to either side, depending on how quiet things are — narrower where the local background is already higher. Most people register a delivery by ear first: it announces itself well before it is overhead, and is still audible after it has passed.
Hear it for yourself.
Decibels only tell half the story. Manna says the drones are no louder than everyday background noise — so here is what one delivery actually sounds like passing over a home, in real time.
“No louder than a lawnmower.” Often true on paper — but the character of a sound decides how much it grates. A drone’s pitch, tonal whine and the way it moves overhead make it carry and intrude in a way a steady background hum does not, even at the same measured loudness.
Resident footage, used with permission. Your device volume is not calibrated, so this conveys the character of the sound rather than a measured level — the decibel figures elsewhere on this page come from the Trinity College Dublin study (Nash & Kennedy, 2024).
Breakdown by destination
~1.2 km
~2.0 km
~2.6 km
~3.0 km
Bar lengths are scaled to a common maximum so destinations can be compared directly. The closest destination affects the fewest buildings; the furthest, the most. The top band combines Loud and Very loud, as the model reports them together here.
Each band shows how far a single overflight rises above that building’s own local background — quiet streets show the drone standing out more, busy roads less. Where it sits below a building’s background it is Masked and not counted. (Absolute dBA examples assume a quiet ~42 dBA suburban background; on busier streets the same band means a higher absolute level.)
EPA’s Lden background is a 24-hour average that includes evening and night penalties, so it tends to overstate the quiet daytime background. That makes these “stands out above background” counts conservative — in genuinely quiet periods more buildings would hear the drone than the figures show.
Where a home sits relative to the flight line changes both how loud a pass is and what it sounds like. Trinity College Dublin’s measurements found the overall level is highest directly beneath the drone, and the sound carries further forward and back along the flight path than out to the sides — the airframe partly shields the sideways direction.
The character shifts with angle too. Directly underneath, low frequencies dominate — a deep thump. Off to the side, more of the high-frequency, tonal content comes through: the whinier, more modulated sound people most often describe as annoying.
Listening studies consistently find drone noise rated more annoying than road traffic at the same loudness — on the order of a 5–6 dB equivalent penalty (NASA’s WGA-I tests; EMPA; Gwak et al.), with the effect largest in quiet areas. These are population averages for the acoustic component only, not a verdict about any one home.
A single dBA figure captures none of this. The readings above measure loudness — not character, and not direction.