This paper is focused on the identification and elimination of waste in building construction process in the city of Bogota so as to increase productivity. The methodology for gathering information was direct observation supported by digital images. Common causes of construction waste were identified, such as insufficient materials, inefficient material distribution, rework, and weather, among others. The data collection method also included construction workers interviews to identify motivational aspects and other general issues that affected productivity. Factors like salaries, workplace environment and mood were identified. Finally, discrete event simulation models were created for the real scenario and different scenarios were proposed.