Swiss Civil Code

¹ In ex­er­cising their own­er­ship rights, in­clud­ing in par­tic­u­lar the right to run a busi­ness on his or her land, landown­ers are ob­liged to re­frain from any ex­cess det­ri­ment­al to neigh­bour­ing prop­er­ties.

² In par­tic­u­lar all harm­ful ef­fects that are not jus­ti­fied by the loc­a­tion and char­ac­ter of the land or by loc­al cus­tom such as air pol­lu­tion emis­sions of nox­ious va­pours, noise, vi­bra­tions, ra­di­ation or the depriva­tion of sun­light or day­light are pro­hib­ited.⁵⁹⁸