Sustainable buildings are resistant, safe, healthy, energy efficient, durable and comfortable to use. Within the scope of the conducted research, a strategic model was developed and formed, which solves the problem of the simultaneous integration of several requirements/aspects (energy efficiency, durability, fire safety) in the process of renewal of facades/buildings. Validation of the proposed model through a case study proved that its use enables: a methodological approach to improving the condition of existing buildings in the direction of a sustainable built environment, while maintaining the inherited values and advantages of existing buildings; detection, location and geometric characterization of facade cracks using a newly created semi-automated digital tool; fire risk assessment, using a newly created methodology, unique in our region and in accordance with the latest trends in the field of risk analysis; the availability of data and information needed for a detailed facade assessment and the overall process of planning and designing the renewal of existing buildings, through the „building file“, which is one of the output of the model; as well as forming a framework for further development of models for different levels of renovation from individual buildings to complete blocks of buildings and settlements as a whole.