This paper describes the conservation and maintenance project of the 720 m2 floor mosaics of the archaeological site of Nora, Sardinia, designed by CCA, Centro di Conservazione Archeologica, in 2002 for the Soprintendenza Archeologica of Cagliari. Nora is a site with high number of visitors and difficult climatic conditions due to the marine environment. The 2002 project was based on an analysis of the state of conservation of the mosaics and of the performance of the previous restorations and reburials. The result was a detailed technical program for treating the mosaics and a general plan for the ordinary maintenance of the mosaics and site. This project today forms the basis for the current management plan of the Soprintendenza for Nora. The present paper compares the results of previous restorations and reburials with more recent strategies, provides a time estimate for technical treatments and presents the ordinary maintenance program that includes a list of the operations.