Swiss Civil Code

¹ The deed of con­sti­tu­tion must spe­cify the man­ner in which the prop­erty is di­vided in­to con­domin­i­um units and define the share that each unit rep­res­ents of the value of the prop­erty or of the build­ing right ex­pressed as frac­tions with a com­mon de­nom­in­at­or.⁶⁰⁶

² Al­ter­a­tion of the size of a share re­quires the con­sent of all dir­ectly in­volved parties and the ap­prov­al of the as­sembly of con­domin­i­um own­ers; however, each con­domin­i­um own­er is en­titled to seek rec­ti­fic­a­tion if his or her share has been defined in­cor­rectly in er­ror or is no longer ac­cur­ate ow­ing to struc­tur­al modi­fic­a­tions to the build­ing or its sur­round­ings.