This book outlines the principles for assessing the technical condition of civil building structures before they undergo reconstruction or major repairs. It is intended for undergraduate and master's students specializing in Construction (program code 270800), with a focus on Urban Development and Management at the bachelor’s level, and Technical Maintenance and Reconstruction of Buildings and Structures at the master's level. The content covers disciplines such as Engineering Surveys and Inventory for Redevelopment (bachelor’s program) and Fundamentals of Structural Reinforcement during Building Operation and Renovation (master’s program).