The Khedivial Cairo is the central part of Downtown Cairo, it was planned and designed by prestigious French architects who were commissioned by Khedive Ismail, who stressed the importance of European style urban planning in Cairo, to include broad, linear gridded streets, geometric harmony, and modern European architectural style. Since the 1860th tell now Khedivial Cairo has had significant importance as downtown and a heritage area. But after decades of neglecting the heritage buildings in downtown, without any maintenance and a lot of unprofessional additions to them, all the heritage buildings in this area need to be restored. The revitalization project of the Khedivial Cairo started a few years ago, as cooperation between many governmental ministries, the privet sector, and the stakeholders. But the project still missed the comprehensive master plan for the whole area. This paper will present overview of the revitalization of Khedivial Cairo project, in addition to discuss a case study of the restoration of a building in Kasr Elnil street and the work difficulties, attempts to find solutions and development of responses to these difficulties, these solutions should preserve the identity of the heritage building