當前行政法體系理論之變革脈絡，其主軸之一乃在：如何於行政任務變遷趨勢下，在公私協力合作事務領域，尋思行政法學體系與原理的貫徹與調整。對照於此，當如何於再利用古蹟成為課題，隨之而來則是公部門無法支應龐大資金與人力的問題，於是，文資法於民國89年修法時，有了相關古蹟委託管理的規定，藉以引進民間資源達成古蹟再利用的任務。本文在公共任務、國家任務、行政任務、行政任務之民營化的思考脈絡下，首要釐清的是私部門在古蹟管理維護中的角色分擔。其次，就公部門與私部門共同完成行政任務之手段－契約作定性分析。最後，就公部門與私部門共同完成行政任務之締約階段，探討應有的各種考量基礎，嘗試建構並提出現行運作的問題。

　　Since passing Cultural Heritage Conservation Law in 1982 and being executed ,many valuable historic building are designated as Historic Heritage Sites so that they are protected by the formal political power. The work of historic preservation and conservation is a dynamic process and it definitely is not static. The new concept of heritage adaptive-reuse, much more guaranteed in sustainable preservation, was evolved from the old idea of protecting historic assets as national monuments. However, the traditional governmental system cannot execute well all the tasks which the ideal of “welfare state” brings and the challenge of the international competition that globalization causes. Decreasing the financial burden of executing the governmental tasks and promoting the executive efficiency have become the common target of most countries in recent years. Thus the privatization of the executive tasks has been a global trend. Privatization of Historic Building Management has been also a hot theme for discussion in Taiwan recently.