Abstract: The thesis of the article is to explain how space is a constructed theory and not a substantive object. The space is not absolute, is not a place where there are bodies, but is a human construction from the extentions of bodies. Due to bodies are spaciously, we can configurete space like their relations. Its geometry structure is a rational construction above this metaphysical and fundamental spatial relation. But thise is not the same as Kant, it is like Zubiri: space is a construction above a metaphysical structure of bodies respectivety, not a pure form of our human structure. It is a rational construction, not intuitive, not from sensibility, but a construction beyond all percepcion: it is a postulation.