This lecture covers the land value chain focusing on the costs related to land preparation in real estate development. It discusses the various expenses involved, such as tree cutting, demolition, soil decontamination, legal fees, and technical infrastructure connections. The relationship between landowners and developers regarding the allocation of preparation costs is explored, highlighting the impact on land prices. Additionally, it delves into the different phases of the land value chain, from raw land to developed property, and the financial implications for landowners, developers, and property owners. The lecture also addresses the roles of landowners, developers, promoters, and property investors in real estate projects, emphasizing their functions and interactions in the development process.