In response to the growing demand for renewable energy sources, increasing attention is being directed toward the utilization of solar energy. The possibility of harvesting solar power through photovoltaic micro-installations on building surfaces has the potential to become a significant factor influencing the market value of real estate. This article presents a methodology for the efficient assessment of solar potential on the roofs and façades of buildings, based on publicly available data sources and validated computational algorithms. The approach involves the analysis of a Digital Surface Model (DSM) and three-dimensional building models, combined with solar radiation simulations and the identification of surfaces with optimal geometric parameters and high solar potential, to evaluate their suitability for solar energy production. Using a case study of a historic city center, the potential for meeting buildings’ energy demand through photovoltaic infrastructure was assessed. Additionally, the study proposes the inclusion of solar exposure characteristics as a supplementary parameter influencing real estate valuation, while considering potential constraints from local zoning regulations.