To increase the fastening force of a temporary fitting for a building, which is provided with a fastening wedge hole and a fastening wedge driven into the fastening wedge hole, and to enhance the effect of preventing the loosening of the wedge.

This temporary fitting for the building is equipped with the fastening wedge holes 13a and 13b provided in a clamp body 9, and a fastening wedge 10 driven into the fastening wedge holes 13a and 13b. A non slip wedge 11 and a non slip wedge hole 15 are provided. The non slip wedge hole 15 is formed in such a manner as to pass through the fastening wedge 10 in a direction orthogonal to the direction of driving the fastening wedge 10, and in such a manner as to be positioned astride the inside and outside of the outside surface of the clamp body 9 when the fastening wedge 10 is driven into the fastening wedge holes 13a and 13b. The non slip wedge 11 is driven into the non slip wedge hole 15 outside the outside surface of the clamp body 9, so that the fastening wedge 10 can be pulled in a driving direction with respect to the clamp body 9.