A methodology to implement a maintenance plan for buildings’ facades is presented. The theoretical proposal is based on relevant literature and was applied and adjusted in a survey of 30 buildings. It considers a three-step methodology: detailed inspection, post-inspection maintenance actions, and proactive maintenance planning. The proposal is based on systematized procedures, involving detailed information on the facade. A methodology to use multi-criteria to prioritize maintenance actions is suggested, namely environmental; extension; consequences; and safety requirements. Considering four types of maintenance operations, they are used to solve the main anomalies in facades (aesthetical, adhesion loss and fastening defects).