The project proposal envisages improving the energy performance of 3 residential buildings from the residential building stock of the city of Vidin through the implementation of sustainable integrated high-efficiency energy measures and renovation of the appearance of the urban environment. The intervention sites are multi-family residential buildings located at ul. "Aleko Konstantinov" № 3, ul. "Raina Knyaginya" 9 and zh.k. "Georgi Benkovski" bl. 12, vh. A and B, in the city of Vidin. Owners' Associations have been established for the three residential buildings, which are partners in this proposal. The project proposal covers a combination of several types of activities that are interconnected, complementary, logically grouped and contribute to the renovation of the residential building stock and the surrounding area, namely: - introduction of energy-saving measures from the selected package of energy-saving measures specified in the Energy Efficiency Survey Reports; - implementation of measures prescribed in the Technical Surveys and Technical Passports of the buildings; - ensuring an accessible environment for people with disabilities; - improvement of the surrounding spaces around the buildings; - construction/renovation of public recreation areas and green areas, including physical elements of the urban environment and green infrastructure for inter-block spaces.