Successful project management of construction projects fundamentally relies on the competent handling of construction costs and schedules. Particularly, reliable cost planning is a crucial quality feature for clients when evaluating a good architect, making it one of the most important foundations of project preparation. Furthermore, cost estimation is essential for establishing the project budget, and it requires an efficient methodology that promptly identifies cost overruns during the planning phase. Key terms such as cost indicators, life cycle costs, cost estimation methods, and cost control methods form an indispensable repertoire for every practicing architect. "Basics of Cost Planning" explains step-by-step and in a practical manner the cost planning processes during the planning and construction phases, clearly outlining how costs evolve.