Swiss Civil Code

¹ Where a pur­chase agree­ment is con­cluded, the vendor must no­ti­fy per­sons with a right of pre-emption of the terms there­of.

² If a per­son wishes to ex­er­cise his or her right of pre-emption, he or she must as­sert it with­in three months of learn­ing of the con­clu­sion and terms of the pur­chase agree­ment. Such a right may no longer be ex­er­cised once two years have elapsed since the entry of the new own­er in the land re­gister.

³ Dur­ing that time a per­son may ex­er­cise a right of pre-emption against any own­er of the land.