The Real Estate Management is increasingly an essential function for the proper performance of any real estate market, and they should be a reasonable knowledge of the structure and segmentation. One sub-segments of the Real Estate Management best known in Portugal is the Management condominiums. However, a substantial part of the condominium managers will not connect to this sub-area and the wider area of Real Estate Management. Now, it is essential for a deep understanding of its role and its requirements, integrate knowledge management with condominiums Real Estate Management, in order to be able to provide to its customers the best possible service. In a competitive market every day, the manager of condominiums that have a broader perspective of Real Estate Management will gain substantial competitive advantages over their competitors.