The topic of this bachelor thesis elaborates on the restoration of stone facades. The work displays the efficiency and economic efficiency/ profitability of stone facades. Throughout history stone is a substantial building material, not only in Croatia but all over the world. The most known Croatian stone is mined from the quarries of the island of Brac, and was used for the construction for a great number of sights worldwide. This thesis indicates and explains detailed the construction of stone facades. Moreover it illustrates the economic impact on the energy efficiency and especially on the lowering of thermal energy by building ventilating stone facades. Furthermore the cost effectiveness of the extension of ventilating stone facades and the subvention through the Republic of Croatia and the European Union are discussed.