It would be endless to enumerate the number of tangible and intangible activities which in a country are affected by inefficiency in disaster prevention and by virtue, it is convenient to reaffirm that, definitely, physical security from seismic risks, constitutes one of the most prized and necessary public goods. 2-Process research in the methodological development of the research were considered two scenarios, taking into account that messy urban development represents for the inhabitants of Bogota, serious risks to seismic events in particular, those strata lower who live in unsafe conditions by the poor quality of its buildings; Likewise, arose the assumption that urban planning authorities and relief institutions, can anticipate the aftermath by seismic disasters, minimizing or annulling the risk factors in proportion to its social interest and the degree of demand in earthquake-resistant measures. It is convenient to warn that this evaluative research presents characteristics, attributes, dimensions and very peculiar properties because of the importance that has in front of the existing socio-economic planning policies. It was necessary to resort to sources historical, scientific and practical, as well as specialized works and empirical knowledge that the theme author has. The permanent consultation with professionals specialized in seismology, geology, geography, history, engineering and other specialties was determined to find the technical elements that were used directly in the development of research. So was were the following variables:? Loss of human lives? Uses of the soil? Rules of urban planning? Population growth? Commitment of the scientific society? Commitment of civil society? Quality of housing construction? Preparation of relief agencies? Incidence in the socio-economic development of the district Capita? Knowledge of risks by the population of Bogota? Costs of prevention against the aftermath by unpredictability, it was necessary to resort to statistical data to perform qualitative and quantitative analysis related to the research problem and consequently, worked the following indicators:? Loss of lives in high numbers and surprising way? Wounded and maimed with permanent sequelae? Destruction of civil engineering works? Destruction and loss of homes? Absolute poverty in great masses of population for loss of all their possessions? Delay in development plans? Increase of unemployment by closure of industries and commercial sectors? Non-compliance with policies of the State for immediate emergency care? Not planned international contractual commitments? Emergence of new belts of misery? Generation of ineffectiveness of State violence to meet such emergencies.