This research was descriptive research. The purposes was study knowledge level of theowner building in pursuing permission of building construction follow Building Control Act., B.C.2522 atChaiyaphum Municipality Muang District Chaiyaphum Province. The experimental group consisted of45 cases of study obtained from owner building in pursuing permission of building construction atChaiyaphum Municipality Muang District Chaiyaphum Province. Collect the data by quantitativemethod. The developed interview was used as a tool to collect employed quantitative data. Thecontent validity was improved and adjusted by the suggestion of the experts. Using KR-20 tested thereliability of the assessment tools; were 0.90 knowledge level. Data analysis was done by computerprogram. Statistics were to acquire percentage, means, and standard deviation, maximum, andminimum used content analysis.
