PURPOSE: To provide a jig for adjusting an interval between housing units in installing the housing unit constituting a unit house and to provide a jig for adjusting an interval between a trapezoidal unit and a normal rectangular unit so as to enable easy adjustment of an interval between a unit with an inclined face and the rectangular unit.

CONSTITUTION: In an installation adjusting jig for housing unit in which a pair of locking legs 3A and 3A are mounted on a guide rod 1 so that an interval between the pair of locking legs 3A and 3A is movable by its rotation, the pair of locking legs 3a and 3A are inserted into nuts 11 and 12 for mounting suspending eyebolt provided in the neighborhood of upper faces of an inclined face of a trapezoidal unit 7 and a rectangular unit 8 and locked by each of the units 7 and 8. Also, the guide rod 1 is formed so that it has the sufficient length to keep the state parallel with the upper face of the rectangular unit 8 when the pair of locking legs 3A and 3A are inserted into the nuts 11 and 12.