asuinrakennustensa

Asuinrakennustensa is a Finnish grammatical form that marks possession of multiple residential buildings, typically translated as “their residential buildings’” or “of their residential buildings.” It is a genitive plural construction used in noun phrases to connect a possessed noun to its possessor, often in written or formal language.

The form is built from asuinrakennus (residential building). Its plural nominative is asuinrakennukset, the genitive plural is asuinrakennusten, and adding the possessive suffix -nsa/-nsä results in asuinrakennustensa. The suffix indicates possession, while the exact possessor (his, her, its, or their) is clarified by context or by including a separate possessive pronoun, such as hänen or heidän.

Usage and examples: asuinrakennustensa katot refers to the roofs of their residential buildings, and asuinrakennustensa ikkunoiden määrä describes the number of windows in their residential buildings. This construction is common in formal writing, land or property descriptions, legal texts, and descriptive prose, where precise attribution of possession to a group or person is required. While the form is standard in Finnish, it may be less frequent in casual spoken language, where more explicit pronouns or shorter phrasing might be preferred. See also asuinrakennus for the base term.