This paper discusses a methodology for the environmental assessment of tourist facilities located in Cuban coastal zones in which the general aspects of the process are discussed, defined, and characterized, and examines the main processes that occur as a result of the negative impacts of construction activities. It establishes the theoretical conceptual framework underlying the research and includes a detailed analysis and processing of a sample of tourism projects located in coastal ecosystems. The methodology is complemented by results that include proposed strategic lines of action and a plan for managing negative environmental impacts throughout the life cycle of tourist facilities through prevention, correction and mitigation measures. It ends with conclusions and recommendations to guide tourism development toward environmental sustainability.