違章建築是目前台灣各縣市政府主管建築機關所面臨執行建築管理的重要課題之一，本研究以台南市已查報之違章建築案件為實證研究對象，依時間向度及空間向度將違建資料加以歸類分析比較其違建之特性與影響，並藉由外部性理論予以探討法令規範角度下的「合法建築使用」及使用者觀點下的「實際建築使用」之間的落差。同時透過問卷調查瞭解居民空間使用的需求，以分析建築空間管理之規範與法令的合理性，提出適當的建築管理策略之建議。最後透過特徵價格法建立違章建築之特徵價格模型，以分析政府部門在採取不同建築管理策略下，所獲得的實質效果進行比較分析，並嘗試提出未來的處理建議策略。

Building violations are one of the most important issues for the building authorities of all local governments. These authorities must cope with such building management violations. Based on reported building violations in Tainan City, we classified the cases using time and space dimensions for the analysis and comparison of the features and the impact for each kind of building violation. Externality theory was employed to investigate the gap between legal building usage as defined by related laws and practical building usage as per the users’ view. A questionnaire survey was conducted to understand residents’ needs for space usage. Based on the survey results, we analyzed the reasonability of the current laws and regulations governing building and space management. We then proposed building management strategies based on this analysis. Finally, a hedonic price model for illegal buildings was established using this method that examined the substantial effects of different building management strategies to find future directions for handling building violations.