byggnadens
byggnadens is a Swedish grammatical form used to indicate possession or association with a specific building. It functions as the possessive of the definite noun byggnaden (the building). In Swedish, possessive forms are created by adding the suffix -s to the definite form of a noun, so byggnaden becomes byggnadens, meaning the building's or of the building. The corresponding plural possessive is byggnadernas (the buildings').
The base noun is byggnad (building); its other forms include the indefinite byggnad, the definite byggnaden,
Usage examples include byggnadens fasad (the building's façade), byggnadens ventilation (the building's ventilation), or byggnadens historia
Notes: as a grammatical form, byggnadens does not carry independent meaning beyond possession; it is part of