The development of the concept of sustainable architecture requires in-depth research due to the exceptional complexity and relevance of this problem. In this regard, the purpose of this article is to consider the technologies of engineering environmental protection related to measures to preserve the environment, maintain ecological balance, and reduce the negative effects of human activity on the natural environment. A selection of project proposals of objects is given, where technological developments are presented, characterized by a new alternative approach to creating an eco-sustainable habitat by means of its engineering protection. The technologies that ensure sustainable waste disposal are revealed recycling of urban waste using a closed system for the production of energy and materials from garbage. A wide range of engineering proposals for seawater purification and processing of floating debris accumulation has identified: technologies for the disposal of such waste and their conversion into energy, the elimination of islands from oceanic debris from the water surface. Alternative technologies of engineering environmental protection and climate adjustment for managing its changes, as well as habitat restoration in the sinking coastal areas of the city are presented. Attention is drawn to the problem of eliminating the consequences of negative impacts on ecosystems and restoring the natural environment: the transformation and recreation of forests and areas with drained swamps, as well as the formation of agricultural biodiversity in the context of food security. The results of the study can be useful for the theory and practice of sustainable architecture formation, as they open up completely new opportunities for creative search.