A higher apartment is often assumed to be a quieter apartment. Height can reduce exposure to some internal sources, but it also changes which façades, roofs and external sound paths matter. Recent apartment research is a useful reminder that floor number is a clue, not an acoustic specification.
Height changes the source map
Apartment noise is not one thing. Footsteps above, doors in a corridor, a lift lobby, road traffic, aircraft and rooftop plant all reach a home by different paths. Moving higher in a building may increase the distance from an entrance or garage while bringing a dwelling closer to mechanical equipment on the roof.
The important question is therefore not simply whether the apartment is high or low. It is which sources dominate, how the dwelling is arranged and which building elements separate each source from the rooms that need protection.
What the new study found
A 2026 peer-reviewed study examined noise annoyance reported by 1,112 residents in 110 apartment complexes across Sydney, Melbourne and Perth. The researchers combined residents' responses with design information taken from architectural and development plans. Higher floor levels were associated with lower annoyance from internal building noise. Bedrooms and living rooms that did not adjoin or open directly onto external circulation spaces were also associated with lower internal annoyance.
The external-noise results were less intuitive. Corner apartments were associated with greater annoyance, while greater separation between buildings was unexpectedly associated with greater external annoyance. Apartments overlooking communal space were associated with lower external annoyance. These are associations from a cross-sectional study, not proof that any one design feature caused the reported experience.
Higher floors can reduce some internal noise
The authors suggest several plausible explanations for the floor-level result. Residents higher in a building may be farther from entrances, shared facilities, car parks and gyms. An apartment near the top may also have fewer homes above it. That is useful evidence for design review, but it is not a guaranteed benefit for every tower or every room.
Lift machinery, roof plant, water services and structural sound paths can reverse the pattern in a particular building. So can poor separation from a corridor or neighbouring dwelling. A meaningful assessment should identify those sources rather than applying a generic premium to a floor number.
Corner apartments trade outlook for exposure
A corner home often has more windows, more external wall and more than one orientation. That can improve daylight and outlook, but it can also expose the dwelling to several roads or sound paths. The study's corner-apartment association fits that mechanism, although it does not establish it as the cause.
The same caution applies to building separation. More distance from a neighbouring block sounds helpful, yet another building can sometimes screen a road or other source. Remove that screening and a more open view may also become a more open acoustic path.
Circulation spaces deserve more attention
The association involving corridors and other external circulation spaces is especially practical. A bedroom placed beside a lift lobby, stair or access deck may be exposed to speech, doors and footsteps at the times when residents expect quiet. London housing guidance similarly recommends arranging layouts so that circulation and shared areas limit noise to sensitive rooms, and placing bedrooms beside or above other bedrooms where possible.
This is an early-design issue as much as an insulation issue. Good room relationships can remove an avoidable conflict before specifications become complicated or expensive.
A practical apartment assessment
The Australian study did not include objective noise measurements, had a relatively low response rate and examined newer apartment buildings in three cities. Its findings may not transfer directly to an older London block. They are most useful as prompts for a more complete assessment.
- Map the important internal and external sources before judging the floor level.
- Check what sits above, below and beside bedrooms and living rooms, including lifts and roof plant.
- Review every exposed façade and whether another building provides useful screening.
- Consider windows and ventilation in their realistic open, closed and warm-weather states.
- Visit or measure at the times when the relevant sources actually operate.
- Compare the individual rooms, not only the address or marketing description.