Neighbour Law in Switzerland

Prohibition of Excessive Emissions (art. 684 CC)

The owner must refrain from all excess to the detriment of neighbouring property. Prohibited: air pollution, odours, noise, vibrations, radiation or deprivation of light/sunlight not justified by the situation, nature of the properties or local usage. Assessed objectively using a reasonable neighbour tolerance standard.

Distances and Plantations (art. 687-689 CC)

Art. 687 CC defers to cantonal law for planting distances (typically 0.5-6 metres depending on type). Right to cut encroaching branches/roots (art. 687 para. 1 CC): if causing damage and the neighbour has not removed them after complaint within a reasonable time.

Constructions and Excavations (art. 685-686 CC)

Must not harm neighbouring property. Necessary precautions required. Liability for damage caused (art. 679 CC).

Water (art. 689-690 CC)

Lower property must receive naturally flowing water from upper property. Neither may modify natural flow to the neighbour's detriment.

Remedies

Cessation action (art. 679 CC): seek removal of harm, preventive measures and damages. Administrative: municipal/cantonal authorities may intervene for noise (Federal Noise Abatement Ordinance sets limits). Mediation: particularly suited for neighbour disputes. Mandatory conciliation (art. 197 CPC) often resolves them early.