Climate change has generated the need to propose alternatives that reduce the impact of human activities and the real estate market is one of these, an area of opportunity is the production of construction materials that demand energy and use of non-renewable resources. , taking into account one of the indicators of the 2030 Agenda for Sustainable Development, objective 11, of the 11c that says: Provide support to the least developed countries, so that they can build sustainable and resilient buildings using local materials. The objective was to compare the CEB-PET prototype with respect to the CEB and the concrete block, as an alternative for the construction of walls in Saltillo Coahuila. The methodology was quantitative, quasi-experimental, carrying out laboratory and field work. The results indicate that the CEB-PET has a Compressive Strength of 82,194 kg/cm2 and can be used as a load-bearing wall; Regarding cost, it can compete with a concrete block and in relation to its application in the work, it is handled in the same way as a concrete block.