What's considered the biggest flashpoint for neighbor conflict in Korean apartment and villa life?

Floor noise between levels, cheunggan-soeum, is widely regarded as Korea's most common and emotionally charged source of neighbor conflict, driven by the country's dense stacking of apartments and villas where footsteps, dragging furniture, or children running overhead transmit easily through shared concrete structures. Because so much of Korean housing is high-density multi-family buildings, this kind of noise reaches far more households than it would in detached housing.

Rooftop-garden competition and elevator-button etiquette are invented scenarios rather than recognized sources of serious dispute; while minor social friction can happen anywhere, neither compares to the scale of documented floor-noise conflicts in Korea.

The problem is significant enough that many apartment complexes have dedicated management mediation processes, and it has occasionally escalated into serious real-world confrontations, prompting public campaigns encouraging floor mats, slippers, and quieter nighttime behavior.