Thirty-nine post-frame buildings were extensively measured to determine the accuracy of their construction. The buildings were all located in southern Wisconsin and were constructed by 12 different dealers/companies. Deviations between measured and ideal values were calculated for the embedment, alignment, spacing, plumbness and height of posts, as well as for building length and squareness, truss bearing height, and girt height and spacing. This report does not make judgments concerning the acceptability of any tolerance measured nor does it recommend tolerance limits.