This paper verified the characteristic of space planning in "Les Grands Voisins (LGV)" in Paris, a temporary use project which transformed the closed hospital into a public space for multiple purposes. As findings, LGV makes two different spaces: one for the specific uses where LGV’s tenant users and residents create a lively daily atmosphere, and another for the common uses by diverse entities. Besides, LGV has two space-remaking methods: change of the building structure and refurbishment with light materials by DIY. In addition, LGV is a trial process to realize and reconstruct contemporary publicness.