To provide a building with a kitchen building unit having a kitchen table under an excellent mounting state.

A unit building has a kitchen building unit, to which a kitchen table is installed, and the framework structure 1 of the kitchen building unit is constituted in a box shape by columns 11, ceiling beams 12 and floor beams 13. Intermediate columns 14, 14 are mounted among the ceiling beams 12, 12 and the floor beams 13, 13 on both sides of the framework structure 1 respectively at that time, beams 15, 15 for a top plate are stretched among the opposed intermediate coins 14, 14 on both sides, the top plate of the kitchen table is placed on the beams 15, 15 for the top plate, and wall materials 2 for a kitchen are set up to the framework structure 1 in the periphery of the kitchen table.