Swiss Civil Code

¹ Where a per­son uses ma­ter­i­als be­long­ing to an­oth­er in build­ing work on his or her own land or ma­ter­i­als of his or her own on land be­long­ing to an­oth­er, such ma­ter­i­als be­come an in­teg­ral part of the par­cel of land.

² However, where such ma­ter­i­als are used against the will of their own­er, the lat­ter is en­titled to de­mand that the ma­ter­i­als be re­moved and re­turned to him or her at the landown­er’s ex­pense to the ex­tent this is pos­sible without caus­ing dis­pro­por­tion­ate dam­age.

³ On the same con­di­tion, where the ma­ter­i­als were used against the will of the landown­er, the lat­ter may de­mand that they be re­moved from his or her land at the ex­pense of the build­er.