To build or construct (a house, building, etc.). (Transitive) The corresponding intransitive is 建つ (tatsu). Note the homophone 立てる with different meaning.
田舎に小さな家を建てる計画がある。
I plan to build a small house in the countryside.
会社は新しい工場を来年建てる予定だ。
The company plans to construct a new factory next year.
二階建ての建物を建てるには許可が必要です。
You need permission to build a two-story building.