In this article, in the context of home ecology, authors rise the problem of the interpretation of such concepts as «reequipment» and «redevelopment» of residential premises. Which are found in the texts of the Housing Code of the Russian Federation and the Decree of the State Building N170 of 27 September 2003. The authors propose that, along with the well-known components of the ecology of the dwelling, positive changes in the design of the space planning solutions should be considered as one of the criteria for improving the evaluation. In practice, participants in the projects while improving the environment in the homes, face the proliferation of these terms, which are misleading and require further specifications. The article contains the results of real housing redevelopment projects implemented in 2019-2020 in the Kalininsky district of Saint-Petersburg. In addition, the main preferences of the owners of the apartment buildings were taken into consideration. Until recently all of these activities were carried out by the owner, but at the time of the research all works were carried out by licensed specialists. It is suggested that such projects will continue to evolve, however, this process will depend on the introduction of new environmentally friendly building materials and technologies. Moreover, when household appliances will take a bigger share on the consumer market, there will be the improvement of the quality of the indoor environment and it will diversify the capabilities of the owners.